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CVE-2026-42439

OpenClaw < 2026.4.10 - SSRF Policy Bypass in Browser Tabs Action Routes

4.9 MediumFix available

OpenClaw before 2026.4.10 contains a server-side request forgery policy bypass vulnerability in the browser tabs action select and close routes. Attackers can bypass configured browser SSRF policy protections by exploiting the /tabs/action endpoint to perform unauthorized tab navigation operations.

Attack profile

How easy it is to exploit

Attack vector
Network
Complexity
Low
Privileges needed
Low
User interaction
None

What an attacker can affect

Confidentiality
None
Integrity
Low
Availability
None

Exploit likelihood

0.24%Up 0.2 points since May 5, 2026
90%50%10%1%

What each source reports

CVE List Score used 4.9

OpenClaw < 2026.4.10 - SSRF Policy Bypass in Browser Tabs Action Routes

OpenClaw before 2026.4.10 contains a server-side request forgery policy bypass vulnerability in the browser tabs action select and close routes. Attackers can bypass configured browser SSRF policy protections by exploiting the /tabs/action endpoint to perform unauthorized tab navigation operations.

Record
CVE-2026-42439
CVSS 4.0
4.9 MediumCVSS:4.0/AV:N/AC:L/AT:P/PR:L/UI:N/VC:N/VI:L/VA:N/SC:H/SI:N/SA:N
CVSS 3.1
8.5 HighCVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:C/C:H/I:L/A:N
Weakness
CWE-862
Updated
2026-11-02
EUVDEUVD-2026-27261 4.9

OpenClaw before 2026.4.10 contains a server-side request forgery policy bypass vulnerability in the browser tabs action select and close routes. Attackers can bypass configured browser SSRF policy protections by exploiting the /tabs/action endpoint to perform unauthorized tab navigation operations.

Record
EUVD-2026-27261
CVSS 4.0
4.9 MediumCVSS:4.0/AV:N/AC:L/AT:P/PR:L/UI:N/VC:N/VI:L/VA:N/SC:H/SI:N/SA:N
Updated
2026-11-02
GitHub AdvisoriesGHSA-rj2p-j66c-mgqh 6.9

OpenClaw: Browser tabs action select and close routes bypassed SSRF policy

Summary

Browser tabs action select and close routes bypassed SSRF policy.

Affected Packages / Versions

  • Package: openclaw
  • Ecosystem: npm
  • Affected versions: < 2026.4.10
  • Patched versions: >= 2026.4.10

Impact

The browser /tabs/action select and close branches could operate on targets without enforcing configured browser SSRF policy, weakening tab-level navigation protections.

Technical Details

The fix enforces browser SSRF policy in the select and close tab-action branches.

Fix

The issue was fixed in #63332. The first stable tag containing the fix is v2026.4.10, and [email protected] includes the fix.

Fix Commit(s)

  • 48c0347921b7e9438af0312968fc360ca88023f3
  • PR: #63332

Release Process Note

Users should upgrade to openclaw 2026.4.10 or newer. The latest npm release, 2026.4.14, already includes the fix.

Credits

Thanks to @tdjackey for reporting this issue.

Record
GHSA-rj2p-j66c-mgqh
CVSS 4.0
6.9 MediumCVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:N/VI:N/VA:N/SC:L/SI:L/SA:N
CVSS 3.1
8.5 HighCVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:C/C:H/I:L/A:N
Weakness
CWE-862, CWE-918
Updated
2026-11-02
NVD 4.9

OpenClaw before 2026.4.10 contains a server-side request forgery policy bypass vulnerability in the browser tabs action select and close routes. Attackers can bypass configured browser SSRF policy protections by exploiting the /tabs/action endpoint to perform unauthorized tab navigation operations.

Record
CVE-2026-42439
CVSS 4.0
4.9 MediumCVSS:4.0/AV:N/AC:L/AT:P/PR:L/UI:N/VC:N/VI:L/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
CVSS 3.1
8.5 HighCVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:C/C:H/I:L/A:N
Weakness
CWE-862, CWE-918
Updated
2026-11-02
OSV 4.9

OpenClaw < 2026.4.10 - SSRF Policy Bypass in Browser Tabs Action Routes

OpenClaw before 2026.4.10 contains a server-side request forgery policy bypass vulnerability in the browser tabs action select and close routes. Attackers can bypass configured browser SSRF policy protections by exploiting the /tabs/action endpoint to perform unauthorized tab navigation operations.

Record
CVE-2026-42439
CVSS 4.0
4.9 MediumCVSS:4.0/AV:N/AC:L/AT:P/PR:L/UI:N/VC:N/VI:L/VA:N/SC:H/SI:N/SA:N
Weakness
CWE-862
Updated
2026-11-02
OSVGHSA-rj2p-j66c-mgqh 6.9

OpenClaw: Browser tabs action select and close routes bypassed SSRF policy

Summary

Browser tabs action select and close routes bypassed SSRF policy.

Affected Packages / Versions

  • Package: openclaw
  • Ecosystem: npm
  • Affected versions: < 2026.4.10
  • Patched versions: >= 2026.4.10

Impact

The browser /tabs/action select and close branches could operate on targets without enforcing configured browser SSRF policy, weakening tab-level navigation protections.

Technical Details

The fix enforces browser SSRF policy in the select and close tab-action branches.

Fix

The issue was fixed in #63332. The first stable tag containing the fix is v2026.4.10, and [email protected] includes the fix.

Fix Commit(s)

  • 48c0347921b7e9438af0312968fc360ca88023f3
  • PR: #63332

Release Process Note

Users should upgrade to openclaw 2026.4.10 or newer. The latest npm release, 2026.4.14, already includes the fix.

Credits

Thanks to @tdjackey for reporting this issue.

Record
GHSA-rj2p-j66c-mgqh
CVSS 4.0
6.9 MediumCVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:N/VI:N/VA:N/SC:L/SI:L/SA:N
CVSS 3.1
8.5 HighCVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:C/C:H/I:L/A:N
Weakness
CWE-862, CWE-918
Updated
2026-11-02

Affected products

Affected packages

Affected packages
PackageAffectedFixed
openclaw
npm
 before 2026.4.10
2026.4.10

History

History
RecordedChangedSources
first indexedCVE List, EUVD, GitHub Advisories, NVD, OSV

Dates are when Every CVE recorded each change. Upstream dates may differ.

In short

CVE-2026-42439 is a medium vulnerability (CVSS 4.9) in Openclaw, published April 17, 2026. No source lists public exploit code. EPSS puts the chance of exploitation in the next 30 days at 0.24%, the 15th percentile. Fixed in openclaw 2026.4.10.

References

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