CVE-2026-18252Patch(gitlab / gitlab)

🚨 CRITICAL: GitLab has released a security update addressing CVE-2026-18252, a command execution vulnerability affecting GitLab Enterprise Edition (EE). The flaw could allow attackers to execute commands on affected GitLab instances under certain conditions. 🔴 GitLab EE administrators should apply the latest security updates immediately. #GitLab #CVE #CommandInjection #CyberSecurity #DevSecOps #Infosec 

GitLabは19.3.1、19.2.5、19.1.7を公開し、Duo Claude AIエージェントで任意コマンド実行につながる高深刻度の脆弱性「CVE-2026-18252」など複数の問題を修正した。 CVE-2026-18252は、開発者権限を持つ認証済みユーザーが任意コマンドを実行できる問題で、GitLab EE 18.9～19.1.6、19.2～19.2.4、19.3未満の19.3系が影響する。原因はClaude AIエージェントがユーザー制御の設定を処理し、信頼されていない入力をコマンドとして解釈できることにある。 更新ではこのほか、バックグラウンドジョブ処理を妨害できるCVE-2026-77801や、SCIMユーザープロビジョニング機能で細工した入力により無制限ループを発生させるCVE-2025-10903などのDoS脆弱性も修正された。 GitLabによると、http://GitLab.comとGitLab Dedicatedはすでに修正版を使用している。自己管理型環境では19.3.1、19.2.5、19.1.7への更新が必要で、CVE-2026-18252に対する一時的な回避策はない。実際の攻撃での悪用は確認されていない。 https://securityonline.info/gitlab-ee-security-patch/

gitlab patched a high-severity flaw in its claude AI coding agent last week. CVE-2026-18252. the bug: a user with only developer-level permissions could feed the agent config from a user-controlled source and make it run arbitrary commands inside the CI pipeline. think about what lives in a CI pipeline. source code. deploy credentials. cloud tokens. registry keys. the agent had a path to all of it. here's the pattern nobody wants to say out loud. an AI agent with tool access isn't a chatbot. it's code-execution infrastructure that takes untrusted input. we spent twenty years learning to never trust user input in a shell. then we handed agents a shell and quietly forgot the lesson. the fix isn't a smarter model. it's the boring security work. least privilege, job isolation, secrets the agent can't reach, and never letting untrusted input steer an agent that can act. the agent is the new attack surface. treat it like one.

GitLab Enterprise Edition presenta la vulnerabilidad CVE-2026-18252, de severidad alta (CVSS 7.3), que permite la ejecución arbitraria de comandos en pipelines CI/CD mediante el agente AI Duo Claude. Mas información: https://csirt.telconet.net/comunicacion/boletines-servicios/vulnerabilidad-critica-en-agente-ai-de-gitlab-permite-ejecucion-arbitraria-de-comandos-en-ci-cd/ https://t.co/6NlKJQAuuI

🚨High - GitLab EE arbitrary command execution via Duo Claude AI agent (CVE-2026-18252) An authenticated user with Developer permissions can supply agent configuration from an untrusted control sphere, which the Duo Claude agent treats as legitimate instructions — yielding command execution inside CI and unauthorized manipulation of the CI system. Self-managed instances must upgrade . 👉Affected: GitLab EE (self-managed) 18.9–<19.1.7, 19.2–<19.2.5, 19.3–<19.3.1 | Upgrade to 19.3.1, 19.2.5, or 19.1.7

CVE-2026-18252 GitLab has remediated an issue in GitLab EE affecting all versions from 18.9 before 19.1.7, 19.2 before 19.2.5, and 19.3 before 19.3.1 that, under certain conditions,… https://www.cve.org/CVERecord?id=CVE-2026-18252

GitLab Duo Claude AI Agent の脆弱性 CVE-2026-18252 などが FIX：CI 環境内での任意のコマンド実行 https://iototsecnews.jp/2026/08/27/gitlab-duo-claude-ai-agent-flaw-lets-attackers-execute-arbitrary-commands-in-ci-pipelines/ GitLab Enterprise Edition における GitLab Duo Claude AI Agent の、機能取り込み処理の不備に起因する脆弱性 CVE-2026-18252 の影響が懸念されています。この問題は、ユーザーが制御可能なソースから提供される設定が不適切に処理される背景により発生します。認証済みの Developer ロールを持つユーザーによる悪用により、CI 環境内での任意コマンド実行／CI 変数の窃取／ビルド・アーティファクトの改変／接続環境への横展開などの深刻な影響が生じます。対応策として、サポート対象バージョンへの速やかなアップグレード／CI ジョブ・ログの確認／漏えいした CI 認証情報のローテーション／CI ランナーの最小権限での運用が推奨されます。 #CVE202618252 #GitLab #Vulnerability

🚨*CVE* CVE-2026-18252 GitLab has remediated an issue in GitLab EE affecting all versions from 18.9 before 19.1.7, 19.2 before 19.2.5, and 19.3 before 19.3.1 that, under certain conditions,… https://www.cve.org/CVERecord?id=CVE-2026-18252 ----- Traducción: CVE-2026-18252 Git… https://infoflow.cloud`

GitLab patched a Duo Claude AI agent flaw (CVE-2026-18252, CVSS 7.3): a developer could make it process untrusted config and run CI commands. Restrict agent config sources and scope CI secrets. https://docs.gitlab.com/releases/patches/patch-release-gitlab-19-3-1-released/

A major security hole in GitLab’s Claude AI agent (CVE-2026-18252) allowed authenticated developers to execute arbitrary commands in CI pipelines. Affected GitLab EE versions (18.9→19.3.1) must upgrade to 19.3.1, 19.2.5, or 19.1.7 ASAP. This flaw underscores the rising risks of embedding AI agents into development workflows, exposing credentials, code, and build integrity. #Security #GitLab #AIagents #CI #Vulnerability #DevSecOps https://thedailytechfeed.com/gitlab-patches-claude-ai-agent-bug-that-allowed-ci-command-injection/

🚨High - GitLab EE CI Command Execution via Claude Agent Config Injection (CVE-2026-18252) In GitLab EE, the Claude agent can process configuration from a user-controlled source; a developer-role user can inject untrusted config to pull in functionality from an untrusted control sphere and execute arbitrary commands in CI job context. Only impacts GitLab EE under the affected CI/Claude agent conditions. 👉Affected: GitLab EE 18.9-<19.1.7, 19.2-<19.2.5, 19.3-<19.3.1 | Upgrade to 19.1.7 / 19.2.5 / 19.3.1

A critical GitLab EE security patch addresses CVE-2026-18252, fixing a command execution flaw. Learn about affected versions, mechanisms, and mitigation. #GitLab #SecurityPatch #Cybersecurity #CVE202618252 https://securityonline.info/gitlab-ee-security-patch/