50 results for “Regex”

Alpine Linux incident report on attempted exploitation of CVE-2026-97229 (CVSS 10.0), a regex-evaluation bug in Ruby's Onigmo engine reachable through GitLab CI configuration. An attacker crashed workers 8 times on 20 and 21 October 2026. Upgrading to GitLab 19.3.6 did not fix it because the patch sits in GitLab's bundled Ruby. Alpine rebuilt the instance and found no tampering with aports or releases.

alpinelinux.orgwriteupAdded 29 Oct 2026, published 28 Oct 2026🛡️ Security

Open bilingual (Russian and UK English) benchmark of five open pseudonymisation tools and a regex baseline, plus a new engine built on the two strongest tools. On a held-out set of 1,000 synthetic documents per language, the best existing tools leave a whole personal value visible in 61% (Russian) and 58% (UK) of documents. The engine does so in 0.3% and 0.2%. Russian name restoration reaches only 94.6%, below the 99% threshold. Real documents were not tested.

arxiv.orgpaperAdded 27 Oct 2026, published 25 Oct 2026🛡️ Security

This paper presents an open benchmark of five existing pseudonymisation tools and a regex baseline on Russian and UK English documents, plus an open engine built on the two strongest tools. On a held-out set of 1,000 synthetic documents per language, the best existing tools leave a whole value visible in 58 to 61% of documents. The engine does so in 0.2 to 0.3%. Russian name restoration reaches only 94.6%, below the 99% threshold. Real documents were not tested.

arxiv.orgpaperAdded 27 Oct 2026, published 25 Oct 2026🧠 AI

Decode-time provenance binding is a defense for Model Context Protocol agent pipelines against cross-modal trust laundering, where instructions hidden in an email-signature image via LSB, DCT or metadata steganography get decoded by a tool. It combines HMAC-authenticated trust labels, a provenance ledger and context-taint tracking to block critical tool calls. On a real MCP testbed with 24 adaptive payloads, attack success fell from 100% undefended (62.5% for keyword and regex filters) to 0%.

arxiv.orgpaperAdded 26 Oct 2026, published 22 Oct 2026🛡️ Security

Social post summarising emergency patches for Node.js (4 high CVEs), PHP (2 critical) and nginx (3 critical). Node.js flaws include a Brotli decoder out-of-bounds write, a DNS truncation bug and two TLS hostname-verification bypasses. PHP has use-after-free and heap corruption bugs, and nginx has alias-rewrite and map-regex heap overflows plus an SSI-AIO use-after-free. It lists the fixed versions for each product.

x.comthreadAdded 23 Oct 2026, published 22 Oct 2026🛡️ Security

CyberForge Weekly CVE Rundown #006 covers six CVEs from 12-17 October 2026: BotSharp default signing key, GitLab CI/CD regex compiler overflow (CVSS v3.1 10.0), Ivanti Connect Secure auth bypass, Cisco Secure Email Gateway, BeyondTrust Remote Support and the Linux kernel PwnEscape guest-to-host bug. It gives fixed versions, KEV and EPSS status as of 18 October, and separates patch verification from compromise investigation.

x.comarticleAdded 20 Oct 2026, published 18 Oct 2026🛡️ Security

Social post describing CVE-2026-97229, a CVSS 10 unauthenticated RCE in GitLab CE/EE. A crafted .gitlab-ci.yml with a UTF-8 path passes validation under US-ASCII, then is recompiled by the Onigmo regex engine, where an integer wraps at INT_MAX. That gives attacker-controlled VM ops and system() execution as the git user. The chain is to push a payload to a public project, then call unauthenticated GET /api/v4/projects/:id/ci/lint. It links a Rapid7 PoC and writeup and lists fixed self-managed versions 19.2.8, 19.3.5 and 19.4.2. GitLab.com is already patched.

x.comthreadAdded 17 Oct 2026, published 16 Oct 2026🛡️ Security

S2W post on CVE-2026-97229, a CVSS 10.0 remote code execution flaw in the GitLab CE/EE CI/CD regex compiler, disclosed October 13, 2026. Insufficient regex validation plus an integer overflow during encoding conversion lets an attacker who can add CI/CD config use a malicious regex and a UTF-8 repository path to run commands as the git user. Affects self-managed 19.2 before 19.2.8, 19.3 before 19.3.5 and 19.4 before 19.4.2. Rapid7 published analysis and a public PoC exists, with no in-the-wild exploitation confirmed as of October 15. No workaround exists, so patch or restrict access to a management network or VPN.

x.comadvisoryAdded 17 Oct 2026, published 16 Oct 2026🛡️ Security

Orca Security analysis of CVE-2026-97229, a CVSS 10.0 flaw in GitLab CE/EE. An integer overflow (CWE-190) in the CI/CD regular expression compiler gives memory corruption and code execution as the git user. It is triggered by a crafted regex in .gitlab-ci.yml combined with a UTF-8 repository path, with no authentication needed on instances that allow public project creation or self-registration. Lists affected branches (19.2 before 19.2.8, 19.3 before 19.3.5, 19.4 before 19.4.2), the absence of a workaround, interim mitigations, and a Rapid7 PoC against GitLab CE 19.4.1 with ASLR on. Notes a prior max-severity GitLab bug (CVE-2026-85706) was probed in the wild within hours and later added to CISA KEV.

orca.securityadvisoryPublished and added 14 Oct 2026🛡️ Security

ThreatWire post on CVE-2026-97229, an integer overflow in the GitLab CI/CD regex compiler. GitLab rates it CVSS 3.1 10.0 and says it can allow unauthenticated code execution under certain conditions, in both CE and EE. Fixes are in 19.2.8, 19.3.5 and 19.4.2 (not 19.3.4), released Oct 12; GitLab-hosted instances are already patched. The post credits joaxcar via HackerOne and says a Rapid7 researcher published a lab PoC on GitHub, which ThreatWire has not run or verified. It also says the CVE is not in CISA KEV and has no known exploitation.

x.comthreadAdded 15 Oct 2026, published 14 Oct 2026🛡️ Security

GitHub describes replacing an LLM-based generic secret detection pipeline with a two-stage system. High-recall regex generates candidates, then a fine-tuned ModernBERT classifier scores each one using its file path, secret type, variable names and surrounding context. Training data mixes product feedback, weak-labelled regex candidates and synthetic hard negatives, with splits grouped by repository, value or example. The model is exported to ONNX with 8-bit quantization. Reported results against the LLM pipeline: 13% higher precision, 19% higher recall, 11.5% higher owner-weighted acceptance in an A/B test, 86% lower median post-push scan time and over 98% lower serving cost. It is a concrete case for using a small fine-tuned encoder instead of an LLM on a narrow, measurable classification task.

github.blogarticlePublished and added 13 Oct 2026🧠 AI

GitHub describes its secret scanning pipeline for generic secrets. Regex finds candidates with high recall, then a fine-tuned ModernBERT classifier reads the candidate with its file path, secret type and surrounding code to filter hard negatives such as placeholders, fixtures and checksums. The post covers the training data (product feedback, weak labels, synthetic hard negatives), grouped train/eval splits, and ONNX 8-bit quantization. Reported results against the earlier LLM pipeline: 13% higher precision, 19% higher recall, 11.5% higher owner-weighted acceptance, 86% lower median scan time and over 98% lower serving cost. The speed gain made generic secret detection feasible in push protection.

github.blogarticlePublished and added 13 Oct 2026🛡️ Security

Rapid7 analysis of CVE-2026-97229, a CVSS 10.0 integer overflow (CWE-190) in the Onigmo regex compiler used by GitLab CE/EE's CI/CD regex handling. A crafted regex in a .gitlab-ci.yml passes validation as US-ASCII, then is recompiled for a UTF-8 repository path, producing invalid instructions that give code execution as the git user. Rapid7 reproduced it on GitLab CE 19.4.1 with ASLR (patched in 19.4.2); despite the vendor's "unauthenticated" rating, the attacker needs to commit a malicious config to a public project, which self-registration allows. No in-the-wild exploitation is confirmed, and Rapid7 recommends urgent upgrades.

rapid7.comadvisoryPublished and added 13 Oct 2026🛡️ Security

A LinkedIn-hosted PDF guide to Claude Code automation. It explains hook configuration in .claude/settings.json (matchers, JSON stdin payloads, exit code 2 to block) and the hook events: PreToolUse, PostToolUse, Notification, Stop, SubagentStop, SessionStart, UserPromptSubmit and PreCompact. Worked examples include sound and TTS alerts with pyttsx3, a regex guard against rm -rf and other dangerous Bash commands, TDD enforcement, auto-formatting with black, ruff and prettier, and session context loading. It adds troubleshooting and a cheat sheet, and its table of contents lists sections on multi-agent observability, slash commands, MCP tools, sub-agents and professional development patterns. The later sections are cut off in the fetched text. It is useful as deterministic guardrails and automation for a non-deterministic coding agent.

media.licdn.comwriteupAdded 9 Oct 2026🧠 AI

A LinkedIn-hosted PDF guide to Claude Code hooks, subagents, MCP tools and custom slash commands. It covers the hook configuration in .claude/settings.json, the event payloads (PreToolUse, PostToolUse, Stop, SubagentStop, SessionStart), and exit code 2 as the way to block an action. It includes worked examples of safety hooks: a regex-based PreToolUse script that blocks rm -rf, curl piped to a shell, chmod 777 and privileged Docker containers. Other examples are audit logging, TDD enforcement and session context loading. Useful as a practical reference for putting deterministic guardrails around an AI coding agent, though the regex blocklists are easy to bypass.

media.licdn.comcourseAdded 9 Oct 2026🛡️ Security

Rapid7's analysis of CVE-2026-21589 (CVSSv4 9.3), a critical unauthenticated arbitrary file read vulnerability affecting Bitbucket, Confluence, Jira Software/Service Management, Bamboo, Crowd, Crucible, and Fisheye Data Center products. It summarizes watchTowr Labs' root-cause finding that double-colon (::) sequences can act as path separators in Atlassian's web-resource handling, enabling path traversal to read arbitrary files within the Tomcat web root — including crowd.properties credentials that can be chained to create a rogue jira-administrators account. The post provides emergency patching guidance, Atlassian's WAF/RewriteValve mitigations, log-hunting regex, and notes public Python PoC and Nuclei templates exist.

rapid7.comwriteupPublished and added 7 Oct 2026🛡️ Security

CVE-2026-21589 is an unauthenticated arbitrary file read (path traversal) in eight Atlassian Data Center and Server products: Bitbucket, Confluence, Jira, Jira Service Management, Bamboo, Crowd, Crucible and Fisheye. Atlassian fixed it on 5 October 2026, and CISA added it to the KEV catalog on 15 October 2026. The page lists patching, WAF regex, Tomcat RewriteValve and urlrewrite.xml mitigations, and a log check for ".." sequences after up to two rounds of URL decoding.

watchtowr.comadvisoryAdded 30 Oct 2026, published 6 Oct 2026🛡️ Security

Write-up of a BlueHat Asia 2026 talk on CVE-2026-65669, a critical SQL Server elevation of privilege in Copilot in SQL Server Management Studio. The read-only mode was only a regex classifier (LocalSqlExecutionAccessChecker) and was bypassed with DECLARE @p sysname='sp_executesql'; EXEC @p. The chain used indirect prompt injection through AGENTS.md and CONSTITUTION.md extended properties to take a db_owner to sysadmin, with data exfiltration via xp_dirtree and RestoreVerifyBackupFile.

embracethered.comwriteupAdded 29 Oct 2026, published 30 Sep 2026🛡️ Security

Tracekit is an open-source, dependency-free system that logs three cross-checked channels (human intent, model self-reported reasoning, and actual executed actions) for autonomous coding agent sessions into a hash-chained, externally anchorable ledger, hooking into Claude Code's lifecycle events and reconstructing multi-agent hierarchies. The paper's experiments show the ledger detects all 1,600 tested tamper mutations (edits, deletions, reordering, forged inserts, torn writes) with anchoring needed to catch tail truncation/full re-chaining, that a regex-based tool-call gate blocks only 41% of harmful calls while over-blocking benign ones and is trivially evaded, that in 14 real Claude Code runs the agent never acted on 4 planted indirect prompt injections, and that an LLM reviewer catches 100% of seeded misaligned steps in traces versus 82% for rule-based flags. The authors release the system, harness, and all traces.

arxiv.orgpaperAdded 29 Sep 2026, published 28 Sep 2026🛡️ Security

Tracekit is an open-source, dependency-free auditing system for autonomous coding agents that records three channels per session — the human's stated intent, the model's self-reported reasoning, and the actions actually executed — into a hash-chained, externally anchorable ledger. It hooks into Claude Code's lifecycle events, reconstructs multi-agent hierarchies, gates tool calls with a pre-execution policy, and provides a live browser-based ledger verifier. Across five experiments the authors show the hash chain catches all tested tampering (with anchoring needed against tail truncation/re-chaining), a hook adds ~24ms overhead at scale, a regex-based gate only blocks 41% of harmful tool calls, real runs correctly resisted and disclosed planted prompt injections, and a new 'seeded-fault splicing' method with an LLM reviewer caught 100% of faulted traces versus 82% for rule-based flags.

arxiv.orgpaperAdded 29 Sep 2026, published 28 Sep 2026🧠 AI

MemSentry is a proposed pre-commit evaluation framework for agentic AI systems that intercepts proposed writes to persistent memory and issues Accept/Review/Quarantine decisions by jointly scoring source trust, semantic risk, attack radius over a component-dependency graph, access risk, and a signed security-posture delta. The authors evaluate it against 1,000 GPT-4-generated scenarios using four pluggable semantic classifiers (Regex, TF-IDF+SVM, SBERT+LR, SetFit), with SBERT+LR reaching 91.7% accuracy while all methods catch 100% of external quarantine-class threats; the paper also documents a key limitation — surface-similar but oppositely-intentioned insider operations remain hard to distinguish semantically. It targets the persistent-memory-poisoning attack surface distinct from prompt injection, where a single malicious memory write (e.g., "suppress alerts from this IP") can silently persist and influence future agent actions like a SOC assistant's alerting or access decisions.

arxiv.orgpaperAdded 26 Sep 2026🛡️ Security

Aray is a deterministic-first YARA interpreter and positive-fixture synthesizer that generates benign, YARA-matching ELF/PE/generic artifacts to validate detection rules without storing or distributing live malware samples. Conventional code (not a generative model) canonicalizes rules, derives witnesses from regex/hex declarations, and performs extraction, layout, and binary serialization; an LLM is only permitted to propose constructive rule normalizations or residual-semantics judgments, never backend source or binary structure, and the pipeline supports a zero-inference execution path. Evaluated against 416 public YARA rules, it achieved 406/416 (97.6%) matches to the original upstream rule, with the design explicitly motivated by containment concerns raised by the July 2026 OpenAI–Hugging Face agent incident.

arxiv.orgpaperAdded 26 Sep 2026🛡️ Security

MemSentry is a formal framework that intercepts proposed writes to an AI agent's persistent memory and issues Accept, Review, or Quarantine decisions by jointly weighing source trust, semantic risk, attack radius over a component-dependency DAG, access risk, and a signed security-state delta. Evaluated on a 20-asset dependency DAG with a 10x20 access-control matrix and 1,000 GPT-4-generated attack scenarios, it compares four pluggable semantic classifiers (Regex, TF-IDF+SVM, SBERT+LR, SetFit), with SBERT+LR reaching 91.7% accuracy / 0.908 macro-F1 and all methods catching 100% of external quarantine-class threats; verified-insider writes are routed to human review rather than auto-quarantined. Addresses memory poisoning as a distinct agentic-AI attack surface that can suppress alerts, escalate privilege, or override security policy without touching model weights or system prompts.

arxiv.orgpaperAdded 26 Sep 2026🛡️ Security

GHSA advisory detailing three bypasses in Flowise's Custom MCP Server security controls (validateCommandFlags and validateArgsForLocalFileAccess in packages/components/nodes/tools/MCP/core.ts) that combine to achieve remote code execution: an unblocked `docker build` subcommand that pulls and runs a remote Dockerfile, a missing `--yes` long-flag alias on the npx blocklist (only `-y` was blocked) enabling arbitrary npm package execution, and a Unix absolute-path regex that fails to catch double-leading-slash paths (`//root/...`), allowing `node` to execute an uploaded local file. Any authenticated Flowise user (or an API key with chatflow view/update rights) can chain these to fully compromise the host via a prediction API call.

github.comadvisoryAdded 26 Sep 2026🛡️ Security

StepSecurity documents a supply-chain attack against @memtensor/memos-cloud-openclaw-plugin on npm (versions 0.1.21, 0.1.23, 0.1.25) and MemoryOS 2.0.34 on PyPI, which insert a hidden "sckit" launcher into normal plugin/import lifecycle code (no install scripts) to spawn a platform-specific Go binary that harvests the parent process's environment and the user's AI prompt text. The Go payloads contain regex patterns for AWS, GitHub, GitLab, npm, PyPI, Hugging Face, Vault, Slack, Stripe and SendGrid credentials, target the user's home directory as an inventory root, and beacon to skyleen.fr "front" domains; the PyPI variant additionally hides a conditional build-backend/CI bridge that can steal PYPI_API_TOKEN during publishing and pull a hash-pinned, Ed25519-signed secondary payload via GitHub Actions. The writeup includes full IOC/remediation guidance.

stepsecurity.iowriteupPublished and added 23 Sep 2026🛡️ Security

Hugging Face details the engineering behind tokenizers v1, a release candidate that claims 3-30x faster single-threaded encoding than v0.23 while producing identical token IDs. Key changes include a hand-written SIMD/bitstream splitter (bitcannon) replacing regex-based pre-tokenization for common BPE patterns (GPT-2, cl100k, o200k, Tekken, DeepSeek), a thread-local word cache for repeated pre-tokens, and an allocation-free BPE merge loop using flat arrays and packed 64-bit comparisons. Benchmarks were run via the open tokbench repository across ten model families, comparing against alternatives like tiktoken and other fast tokenizer libraries.

huggingface.coarticleAdded 29 Sep 2026, published 21 Sep 2026🧠 AI

Betterleaks is a configurable, fast secrets scanner maintained by the original Gitleaks author and team, capable of scanning git history, local filesystems, stdin, GitHub/GitLab orgs and specific PRs/MRs, Hugging Face models/datasets, and public S3/R2 buckets. Detection rules use regex plus an Expr (with legacy CEL compatibility) based prefilter/filter/validate pipeline, allowing entropy checks, keyword gating, and live API validation of found credentials (e.g. checking a GitHub PAT against api.github.com). It's used in production by projects like Aikido Security and shipped inside MegaLinter.

github.comrepoAdded 18 Sep 2026🛡️ Security

Wiz describes an AI detection engine that analyzes model input/output telemetry (prompts, system prompts, tool calls, reasoning) rather than just outputs, in order to catch shifts in AI agent intent such as indirect prompt injection. It walks through OpenAI's disclosed Hugging Face/ExploitGym incident and an internal support-agent phishing-relay scenario, then describes a staged pipeline (regex/SLM candidation, light LLM filtering, deep LLM analysis, correlation with cloud/runtime telemetry) validated against a benchmark of 100+ simulated scenarios covering 57 injected attacks and 45 benign workflows across CI/CD, DevOps, data analyst, support, CLI, and cloud auditor agent personas.

wiz.ioarticlePublished and added 17 Sep 2026🛡️ Security

A public PoC repo for CVE-2026-42533, a pre-auth heap buffer overflow in nginx's two-pass string evaluation engine that occurs when a regex-based map directive using numbered captures ($1, $2) clobbers the shared r->captures state used by a regex location, causing a LEN/VALUE size mismatch. The overflow can corrupt an adjacent ngx_pool_cleanup_t structure to hijack a function pointer for RCE, or under-write to leak heap/libc pointers defeating ASLR; the repo ships exploit.py/leak.py/overflow.py plus a Docker test environment demonstrated at 10/10 reliability on Ubuntu 24.04 against nginx 0.9.6-1.30.3/1.31.2. It also documents the exact vulnerable config pattern, a config scanner link, and the fix (named captures or upgrade to nginx 1.30.4+/1.31.3+).

github.comrepoAdded 10 Sep 2026🛡️ Security

Wiz describes the evolution of its public bucket scanner into an AI-powered "context engine" for data security posture management (DSPM): a multi-agent pipeline where lightweight models triage files and larger models perform deep content analysis, iteratively learning bucket-specific patterns to find sensitive data that regex-based scanners miss. The production system adds structured severity scoring, synthetic/test-data filtering, algorithmic file clustering for scale, and now powers classification across cloud storage, cloud drives, endpoints, and Wiz's Red Agent attack-simulation findings. A one-week scan of public buckets using the engine surfaced over 2,700 sensitive data findings, including correlated credential/schema/export file sets that regex tools would treat as unrelated.

wiz.ioarticleAdded 3 Sep 2026, published 27 Aug 2026🛡️ Security