CVE-2026-42436
highpriority · track · 0OT risk · elevatedEPSS 0.003 · 19 %ileDEEUUSEPSS · scored 2026-10-27
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.
cvss
Technical severity, 0–10. One row per scoring source.
base score 0–10 · higher = more severe · hover a vector to decode⚠ sources disagree · low–high · 1.1–7.7
ssvc
A stakeholder decision — act, attend, or track — from exploitation and impact.
weaknesses
The CWE weakness classes this flaw belongs to.
affected products (4)
Products and version ranges known to be affected.
advisories (2)
Vendor and ecosystem advisories describing this.
- WID-SEC-W-2026-1161OpenClaw: Mehrere SchwachstellenDeutsch2026-04-16csaf · cert_bundDE
Ein Angreifer kann mehrere Schwachstellen in OpenClaw ausnutzen, um erweiterte Rechte zu erlangen, beliebigen Code auszuführen, Sicherheitsmaßnahmen zu umgehen, Daten offenzulegen oder zu manipulieren oder andere, nicht näher spezifizierte Angriffe durchzuführen.
- GHSA-c4qm-58hj-j6pjOpenClaw: Browser snapshot and screenshot routes could expose internal page content after navigation2026-04-17ghsa · osvUS
## Summary Browser snapshot and screenshot routes could expose internal page content after navigation. ## Affected Packages / Versions - Package: `openclaw` - Ecosystem: npm - Affected versions: `< 2026.4.14` - Patched versions: `>= 2026.4.14` ## Impact Authenticated 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. ## Technical Details The 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. ## Fix The issue was fixed in #66040. The first stable tag containing the fix is `v2026.4.14`, and `openclaw@2026.4.14` includes the fix. ## Fix Commit(s) - `b75ad800a59009fc47eaa3471410f69046150e59` - PR: #66040 ## Release Process Note Users should upgrade to `openclaw` 2026.4.14 or newer. The latest npm release, `2026.4.14`, already includes the fix. ## Credits Thanks to @zsxsoft, with sponsorship from @KeenSecurityLab and @qclawer for reporting this issue.
also known as (2)
Other names and identifiers for this entity.
sources
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references (8)
External citations — patches, advisories, analysis.
- https://github.com/openclaw/openclaw/releasesPatchcnnvd
- https://nvd.nist.gov/vuln/detail/CVE-2026-42436cnnvd
- https://github.com/openclaw/openclaw/commit/b75ad800a59009fc47eaa3471410f69046150e59enisa_euvd
- https://github.com/openclaw/openclaw/security/advisories/GHSA-c4qm-58hj-j6pjenisa_euvd
- https://www.vulncheck.com/advisories/openclaw-internal-page-content-exposure-via-browser-snapshot-and-screenshot-routesenisa_euvd
- https://github.com/openclaw/openclaw/commit/b75ad800a59009fc47eaa3471410f69046150e59nvd
- https://github.com/openclaw/openclaw/security/advisories/GHSA-c4qm-58hj-j6pjnvd
- https://www.vulncheck.com/advisories/openclaw-internal-page-content-exposure-via-browser-snapshot-and-screenshot-routesnvd
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