CVE-2026-53765

Chrome DevTools for agents (chrome-devtools-mcp) lets your coding agent control and inspect a live Chrome browser. From 0.20.0 until 1.1.0, The chrome-devtools-mcp daemon writes its PID file with fs.writeFileSync() to a deterministic runtime path. On typical macOS environments, and on Linux sessions where $XDG_RUNTIME_DIR is unset, that runtime path falls back to /tmp/chrome-devtools-mcp-<uid>/daemon.pid. Because the write does not use O_NOFOLLOW, a local low-privilege user on the same POSIX host can pre-create /tmp/chrome-devtools-mcp-<victim_uid>/daemon.pid as a symlink to a file writable by the victim. When the victim later starts daemon mode, fs.writeFileSync() follows the symlink and truncates the target file to the daemon PID string. This vulnerability is fixed in 1.1.0.

• CWE-59

• https://github.com/ChromeDevTools/chrome-devtools-mcp/security/advisories/GHSA-3pvj-jv98-qhjqExploit, Third Party Advisory

Published

Jun 24, 2026

Last Modified

Jun 26, 2026

Status

Analyzed

• How Strix found a critical auth bypass in etcdStrix autonomously discovered a critical authentication bypass in etcd, later designated CVE-2026-33413.
• Autonomous PentestingAI agents that find and validate exploitable vulnerabilities like this one across your applications.
• PR ReviewsPentest every pull request so vulnerable code is caught before it ships to production.
• AI Penetration TestingHow AI-driven penetration testing continuously covers your attack surface.

• CVE-2026-53751DataEase is an open source data visualization and analysis t…8.7
• CVE-2026-53753Crawl4AI is an open-source LLM friendly web crawler & scrape…10
• CVE-2026-53754Crawl4AI is an open-source LLM friendly web crawler & scrape…7.5
• CVE-2026-53755Crawl4AI is an open-source LLM friendly web crawler & scrape…7.5
• CVE-2026-5376An issue that could prevent session inactivity timeouts from…5.9
• CVE-2026-53763OP-TEE is a Trusted Execution Environment (TEE) designed as …3.8
• CVE-2026-53766Chrome DevTools for agents (chrome-devtools-mcp) lets your c…6.1
• CVE-2026-5377GitLab has remediated an issue in GitLab CE/EE affecting all…4.3
• CVE-2026-53776Perry before 0.5.1166 contains a JWT validation vulnerabilit…9.3
• CVE-2026-53777Perry before 0.5.1159 contains a path traversal vulnerabilit…8.6
• CVE-2026-53778Rejected reason: This CVE ID has been rejected or withdrawn …
• CVE-2026-53779WebP Server Go through 0.14.4 contains a path traversal vuln…8.7