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CVE-2026-43577

OpenClaw < 2026.4.9 - Arbitrary File Read via Browser Interaction Routes

7.1 HighFix available

OpenClaw before 2026.4.9 contains a file read vulnerability allowing attackers to bypass navigation guards through browser act/evaluate interactions. Attackers can pivot into the local CDP origin and create or read disallowed file:// pages despite direct navigation policy restrictions.

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
High
Integrity
None
Availability
None

Exploit likelihood

0.25%Up 0.2 points since May 7, 2026
90%50%10%1%

What each source reports

CVE List Score used 7.1

OpenClaw < 2026.4.9 - Arbitrary File Read via Browser Interaction Routes

OpenClaw before 2026.4.9 contains a file read vulnerability allowing attackers to bypass navigation guards through browser act/evaluate interactions. Attackers can pivot into the local CDP origin and create or read disallowed file:// pages despite direct navigation policy restrictions.

Record
CVE-2026-43577
CVSS 4.0
7.1 HighCVSS:4.0/AV:N/AC:L/AT:N/PR:L/UI:N/VC:H/VI:N/VA:N/SC:N/SI:N/SA:N
CVSS 3.1
6.5 MediumCVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:N/A:N
Weakness
CWE-862
Updated
2026-11-02
EUVDEUVD-2026-28166 7.1

OpenClaw before 2026.4.9 contains a file read vulnerability allowing attackers to bypass navigation guards through browser act/evaluate interactions. Attackers can pivot into the local CDP origin and create or read disallowed file:// pages despite direct navigation policy restrictions.

Record
EUVD-2026-28166
CVSS 4.0
7.1 HighCVSS:4.0/AV:N/AC:L/AT:N/PR:L/UI:N/VC:H/VI:N/VA:N/SC:N/SI:N/SA:N
Updated
2026-11-02
GitHub AdvisoriesGHSA-j47r-fqh5-hqcc 7.1

OpenClaw before 2026.4.9 contains a file read vulnerability allowing attackers to bypass...

OpenClaw before 2026.4.9 contains a file read vulnerability allowing attackers to bypass navigation guards through browser act/evaluate interactions. Attackers can pivot into the local CDP origin and create or read disallowed file:// pages despite direct navigation policy restrictions.

Record
GHSA-j47r-fqh5-hqcc
CVSS 4.0
7.1 HighCVSS:4.0/AV:N/AC:L/AT:N/PR:L/UI:N/VC:H/VI:N/VA:N/SC:N/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
6.5 MediumCVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:N/A:N
Weakness
CWE-862
Updated
2026-11-02
GitHub AdvisoriesGHSA-qmwg-qprg-3j38 5.9

OpenClaw: Browser interaction routes could pivot into local CDP and regain file reads

Summary

Browser interaction routes could pivot into local CDP and regain file reads.

Affected Packages / Versions

  • Package: openclaw
  • Ecosystem: npm
  • Affected versions: < 2026.4.9
  • Patched versions: >= 2026.4.9

Impact

Browser act/evaluate interactions could trigger navigation into the local CDP origin and then create or read disallowed file:// pages despite direct navigation guards.

Technical Details

The fix re-checks browser URLs after interaction-driven navigations and blocks targets that violate the configured navigation policy.

Fix

The issue was fixed in #63226. The first stable tag containing the fix is v2026.4.9, and [email protected] includes the fix.

Fix Commit(s)

  • 5f5b3d733bdd791cb457f838514179e1288b10b3
  • PR: #63226

Release Process Note

Users should upgrade to openclaw 2026.4.9 or newer. The latest npm release, 2026.4.14, already includes the fix.

Credits

Thanks to @tdjackey for reporting this issue.

Record
GHSA-qmwg-qprg-3j38
CVSS 4.0
5.9 MediumCVSS:4.0/AV:N/AC:H/AT:N/PR:N/UI:A/VC:H/VI:N/VA:N/SC:N/SI:N/SA:N
Weakness
CWE-693
Updated
2026-11-02
NVD 7.1

OpenClaw before 2026.4.9 contains a file read vulnerability allowing attackers to bypass navigation guards through browser act/evaluate interactions. Attackers can pivot into the local CDP origin and create or read disallowed file:// pages despite direct navigation policy restrictions.

Record
CVE-2026-43577
CVSS 4.0
7.1 HighCVSS:4.0/AV:N/AC:L/AT:N/PR:L/UI:N/VC:H/VI:N/VA:N/SC:N/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
6.5 MediumCVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:N/A:N
Weakness
CWE-862
Updated
2026-11-02
OSV 7.1

OpenClaw < 2026.4.9 - Arbitrary File Read via Browser Interaction Routes

OpenClaw before 2026.4.9 contains a file read vulnerability allowing attackers to bypass navigation guards through browser act/evaluate interactions. Attackers can pivot into the local CDP origin and create or read disallowed file:// pages despite direct navigation policy restrictions.

Record
CVE-2026-43577
CVSS 4.0
7.1 HighCVSS:4.0/AV:N/AC:L/AT:N/PR:L/UI:N/VC:H/VI:N/VA:N/SC:N/SI:N/SA:N
Weakness
CWE-862
Updated
2026-11-02
OSVGHSA-qmwg-qprg-3j38 5.9

OpenClaw: Browser interaction routes could pivot into local CDP and regain file reads

Summary

Browser interaction routes could pivot into local CDP and regain file reads.

Affected Packages / Versions

  • Package: openclaw
  • Ecosystem: npm
  • Affected versions: < 2026.4.9
  • Patched versions: >= 2026.4.9

Impact

Browser act/evaluate interactions could trigger navigation into the local CDP origin and then create or read disallowed file:// pages despite direct navigation guards.

Technical Details

The fix re-checks browser URLs after interaction-driven navigations and blocks targets that violate the configured navigation policy.

Fix

The issue was fixed in #63226. The first stable tag containing the fix is v2026.4.9, and [email protected] includes the fix.

Fix Commit(s)

  • 5f5b3d733bdd791cb457f838514179e1288b10b3
  • PR: #63226

Release Process Note

Users should upgrade to openclaw 2026.4.9 or newer. The latest npm release, 2026.4.14, already includes the fix.

Credits

Thanks to @tdjackey for reporting this issue.

Record
GHSA-qmwg-qprg-3j38
CVSS 4.0
5.9 MediumCVSS:4.0/AV:N/AC:H/AT:N/PR:N/UI:A/VC:H/VI:N/VA:N/SC:N/SI:N/SA:N
Weakness
CWE-693
Updated
2026-11-02

Affected products

Affected packages

Affected packages
PackageAffectedFixed
openclaw
npm
 before 2026.4.9
2026.4.9

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-2026-43577 is a high vulnerability (CVSS 7.1) in Openclaw, published April 17, 2026. No source lists public exploit code. EPSS puts the chance of exploitation in the next 30 days at 0.25%, the 16th percentile. Fixed in openclaw 2026.4.9.

References

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