{"id":"CVE-2026-42436","aliases":["GHSA-c4qm-58hj-j6pj"],"url":"https://o3.security/vulnerability/CVE-2026-42436","summary":"OpenClaw < 2026.4.14 - Internal Page Content Exposure via Browser Snapshot and Screenshot Routes","details":"## Summary\n\nBrowser snapshot and screenshot routes could expose internal page content after navigation.\n\n## Affected Packages / Versions\n\n- Package: `openclaw`\n- Ecosystem: npm\n- Affected versions: `< 2026.4.14`\n- Patched versions: `>= 2026.4.14`\n\n## Impact\n\nAuthenticated browser tool callers could use snapshot, screenshot, or tab routes that did not consistently validate the final browser target after route-driven navigation. In restrictive browser SSRF configurations this could expose content from internal or otherwise disallowed pages.\n\n## Technical Details\n\nThe fix re-checks browser snapshot, screenshot, and tab route results against the configured browser SSRF policy before returning page content. Regression coverage was added around snapshot/screenshot and tab-route flows.\n\n## Fix\n\nThe issue was fixed in #66040. The first stable tag containing the fix is `v2026.4.14`, and `openclaw@2026.4.14` includes the fix.\n\n## Fix Commit(s)\n\n- `b75ad800a59009fc47eaa3471410f69046150e59`\n- PR: #66040\n\n## Release Process Note\n\nUsers should upgrade to `openclaw` 2026.4.14 or newer. The latest npm release, `2026.4.14`, already includes the fix.\n\n## Credits\n\nThanks to @zsxsoft, with sponsorship from @KeenSecurityLab and @qclawer for reporting this issue.","published":"2026-05-05T11:24:55.261Z","modified":"2026-08-12T03:51:24.240948876Z","cvss":null,"epss":{"score":0.00267,"percentile":0.18307,"asOf":"2026-08-24"},"cisaKev":null,"exploitsKnown":0,"affectedPackages":[{"ecosystem":"npm","name":"openclaw","fixedVersion":"2026.4.14"}],"fix":{"url":"https://github.com/openclaw/openclaw/commit/b75ad800a59009fc47eaa3471410f69046150e59","label":"openclaw/openclaw@b75ad80"},"references":[{"type":"ADVISORY","url":"https://github.com/CVEProject/cvelistV5/tree/main/cves/2026/42xxx/CVE-2026-42436.json"},{"type":"ADVISORY","url":"https://github.com/openclaw/openclaw/security/advisories/GHSA-c4qm-58hj-j6pj"},{"type":"ADVISORY","url":"https://nvd.nist.gov/vuln/detail/CVE-2026-42436"},{"type":"ADVISORY","url":"https://www.vulncheck.com/advisories/openclaw-internal-page-content-exposure-via-browser-snapshot-and-screenshot-routes"},{"type":"FIX","url":"https://github.com/openclaw/openclaw/commit/b75ad800a59009fc47eaa3471410f69046150e59"},{"type":"WEB","url":"https://github.com/openclaw/openclaw/pull/66040"},{"type":"PACKAGE","url":"https://github.com/openclaw/openclaw"}],"provenance":{"sources":["OSV.dev","FIRST.org (EPSS)"],"lastVerified":"2026-08-12T03:51:24.240948876Z"}}