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CVE

CVE-2026-42436

OpenClaw: Browser snapshot and screenshot routes could expose internal page content after navigation
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CVE

CVE-2026-42436

OpenClaw: Browser snapshot and screenshot routes could expose internal page content after navigation

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.

Package Versions Affected

Package Version
patch Availability
No items found.

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CVSS Version

Severity
Base Score
CVSS Version
Score Vector
C
H
U
4.9
-
4.0
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
C
H
U
0
-
3.1
CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:C/C:H/I:N/A:N
C
H
U
-

Related Resources

No items found.

References

https://github.com/openclaw/openclaw/security/advisories/GHSA-c4qm-58hj-j6pj, https://nvd.nist.gov/vuln/detail/CVE-2026-42436, https://github.com/openclaw/openclaw/pull/66040, https://github.com/openclaw/openclaw/commit/b75ad800a59009fc47eaa3471410f69046150e59, https://github.com/openclaw/openclaw, https://www.vulncheck.com/advisories/openclaw-internal-page-content-exposure-via-browser-snapshot-and-screenshot-routes

Severity

7.7

CVSS Score
0
10

Basic Information

Ecosystem
Base CVSS
7.7
EPSS Probability
0.00034%
EPSS Percentile
0.10563%
Introduced Version
0
Fix Available
2026.4.14

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