{"id":"CVE-2026-42436","aliases":["EUVD-2026-27255","GHSA-c4qm-58hj-j6pj"],"status":"published","title":"OpenClaw \u003c 2026.4.14 - Internal Page Content Exposure via Browser Snapshot and Screenshot Routes","description":"OpenClaw before 2026.4.14 contains an improper access control vulnerability in browser snapshot, screenshot, and tab routes that fail to consistently validate the final browser target after navigation. Authenticated callers can bypass SSRF restrictions to expose internal or disallowed page content by exploiting route-driven navigation without proper policy re-validation.","severity":{"version":"4.0","score":4.9,"vector":"CVSS:4.0/AV:N/AC:L/AT:P/PR:L/UI:N/VC:N/VI:N/VA:N/SC:H/SI:N/SA:N","level":"medium","assessor":"cna","from":"cve"},"epss":{"day":"2026-11-10","score":0.00267,"percentile":0.18908,"model":"v2026.06.15"},"facts":{"in_kev":false,"known_exploited":false,"public_exploit":false,"fix_available":true},"cwes":["CWE-862","CWE-918"],"published":"2026-04-17T21:47:36Z","modified":"2026-10-28T02:30:41Z","fixes":[{"ecosystem":"npm","package":"openclaw","fixed_in":["2026.4.14"],"sources":["ghsa","osv"]}],"affected":[{"source":"ghsa","ecosystem":"npm","package":"openclaw","ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"},{"fixed":"2026.4.14"}]}]},{"source":"osv","ecosystem":"npm","package":"openclaw","ranges":[{"type":"SEMVER","events":[{"introduced":"0"},{"fixed":"2026.4.14"}]}]}],"products":[{"vendor":"openclaw","product":"openclaw"}],"references":[{"url":"https://github.com/openclaw/openclaw/security/advisories/GHSA-c4qm-58hj-j6pj","tags":["vendor-advisory","advisory","web"]},{"url":"https://github.com/openclaw/openclaw/commit/b75ad800a59009fc47eaa3471410f69046150e59","tags":["patch","fix","web"]},{"url":"https://www.vulncheck.com/advisories/openclaw-internal-page-content-exposure-via-browser-snapshot-and-screenshot-routes","tags":["third-party-advisory","advisory","web"]},{"url":"https://github.com/openclaw/openclaw/pull/66040","tags":["web"]},{"url":"https://nvd.nist.gov/vuln/detail/CVE-2026-42436","tags":["advisory"]},{"url":"https://github.com/advisories/GHSA-c4qm-58hj-j6pj"},{"url":"https://github.com/CVEProject/cvelistV5/tree/main/cves/2026/42xxx/CVE-2026-42436.json","tags":["advisory"]},{"url":"https://github.com/openclaw/openclaw","tags":["package"]}],"sources":{"cve":[{"id":"CVE-2026-42436","title":"OpenClaw \u003c 2026.4.14 - Internal Page Content Exposure via Browser Snapshot and Screenshot Routes","description":"OpenClaw before 2026.4.14 contains an improper access control vulnerability in browser snapshot, screenshot, and tab routes that fail to consistently validate the final browser target after navigation. Authenticated callers can bypass SSRF restrictions to expose internal or disallowed page content by exploiting route-driven navigation without proper policy re-validation.","status":"published","published":"2026-05-05T11:24:55.261Z","modified":"2026-05-06T14:10:13.831Z","cvss":[{"version":"4.0","score":4.9,"vector":"CVSS:4.0/AV:N/AC:L/AT:P/PR:L/UI:N/VC:N/VI:N/VA:N/SC:H/SI:N/SA:N","level":"medium","assessor":"cna"},{"version":"3.1","score":7.7,"vector":"CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:C/C:H/I:N/A:N","level":"high","assessor":"cna"}],"cwes":["CWE-862"],"updated_at":"2026-11-02T13:40:35.004553Z"}],"euvd":[{"id":"EUVD-2026-27255","description":"OpenClaw before 2026.4.14 contains an improper access control vulnerability in browser snapshot, screenshot, and tab routes that fail to consistently validate the final browser target after navigation. Authenticated callers can bypass SSRF restrictions to expose internal or disallowed page content by exploiting route-driven navigation without proper policy re-validation.","status":"published","published":"2026-05-05T11:24:55Z","modified":"2026-05-06T14:10:13Z","cvss":[{"version":"4.0","score":4.9,"vector":"CVSS:4.0/AV:N/AC:L/AT:P/PR:L/UI:N/VC:N/VI:N/VA:N/SC:H/SI:N/SA:N","level":"medium"}],"updated_at":"2026-11-02T19:05:16.683147Z"}],"ghsa":[{"id":"GHSA-c4qm-58hj-j6pj","title":"OpenClaw: Browser snapshot and screenshot routes could expose internal page content after navigation","description":"## 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: `\u003c 2026.4.14`\n- Patched versions: `\u003e= 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.","status":"published","published":"2026-04-17T21:47:36Z","modified":"2026-05-08T01:32:07Z","cvss":[{"version":"3.1","score":7.7,"vector":"CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:C/C:H/I:N/A:N","level":"high"},{"version":"4.0","score":6,"vector":"CVSS:4.0/AV:N/AC:L/AT:P/PR:L/UI:N/VC:H/VI:N/VA:N/SC:L/SI:N/SA:N","level":"medium"}],"cwes":["CWE-862","CWE-918"],"updated_at":"2026-11-02T14:40:03.762927Z"}],"nvd":[{"id":"CVE-2026-42436","description":"OpenClaw before 2026.4.14 contains an improper access control vulnerability in browser snapshot, screenshot, and tab routes that fail to consistently validate the final browser target after navigation. Authenticated callers can bypass SSRF restrictions to expose internal or disallowed page content by exploiting route-driven navigation without proper policy re-validation.","status":"published","published":"2026-05-05T12:16:18.05Z","modified":"2026-06-17T10:47:50.363Z","cvss":[{"version":"4.0","score":4.9,"vector":"CVSS:4.0/AV:N/AC:L/AT:P/PR:L/UI:N/VC:N/VI:N/VA:N/SC:H/SI:N/SA:N/E:X/CR:X/IR:X/AR:X/MAV:X/MAC:X/MAT:X/MPR:X/MUI:X/MVC:X/MVI:X/MVA:X/MSC:X/MSI:X/MSA:X/S:X/AU:X/R:X/V:X/RE:X/U:X","level":"medium","assessor":"secondary"},{"version":"3.1","score":7.7,"vector":"CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:C/C:H/I:N/A:N","level":"high","assessor":"secondary"}],"cwes":["CWE-862"],"updated_at":"2026-11-02T14:12:17.022502Z"}],"osv":[{"id":"CVE-2026-42436","title":"OpenClaw \u003c 2026.4.14 - Internal Page Content Exposure via Browser Snapshot and Screenshot Routes","description":"OpenClaw before 2026.4.14 contains an improper access control vulnerability in browser snapshot, screenshot, and tab routes that fail to consistently validate the final browser target after navigation. Authenticated callers can bypass SSRF restrictions to expose internal or disallowed page content by exploiting route-driven navigation without proper policy re-validation.","status":"published","published":"2026-05-05T11:24:55.261Z","modified":"2026-10-28T02:30:41.591764743Z","cvss":[{"version":"4.0","score":4.9,"vector":"CVSS:4.0/AV:N/AC:L/AT:P/PR:L/UI:N/VC:N/VI:N/VA:N/SC:H/SI:N/SA:N","level":"medium"}],"cwes":["CWE-862"],"updated_at":"2026-11-02T15:45:04.117819Z"},{"id":"GHSA-c4qm-58hj-j6pj","title":"OpenClaw: Browser snapshot and screenshot routes could expose internal page content after navigation","description":"## 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: `\u003c 2026.4.14`\n- Patched versions: `\u003e= 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.","status":"published","published":"2026-04-17T21:47:36Z","modified":"2026-05-08T01:50:44.878883Z","cvss":[{"version":"3.1","score":7.7,"vector":"CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:C/C:H/I:N/A:N","level":"high"},{"version":"4.0","score":6,"vector":"CVSS:4.0/AV:N/AC:L/AT:P/PR:L/UI:N/VC:H/VI:N/VA:N/SC:L/SI:N/SA:N","level":"medium"}],"cwes":["CWE-862","CWE-918"],"updated_at":"2026-11-02T15:46:44.571161Z"}]}}