CVE-2026-43527
OpenClaw < 2026.4.14 - Server-Side Request Forgery via Private Network Navigation
OpenClaw before 2026.4.14 contains a server-side request forgery vulnerability in browser SSRF policy that allows private-network navigation by default. Attackers can exploit this misconfiguration to access internal services or metadata endpoints through browser-driven requests.
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
- None
- Availability
- None
Exploit likelihood
What each source reports
CVE List Score used
OpenClaw < 2026.4.14 - Server-Side Request Forgery via Private Network Navigation
OpenClaw before 2026.4.14 contains a server-side request forgery vulnerability in browser SSRF policy that allows private-network navigation by default. Attackers can exploit this misconfiguration to access internal services or metadata endpoints through browser-driven requests.
- Record
CVE-2026-43527- CVSS 4.0
- 6.3 Medium
CVSS:4.0/AV:N/AC:L/AT:N/PR:L/UI:N/VC:N/VI:N/VA:N/SC:H/SI:N/SA:N - CVSS 3.1
- 7.7 High
CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:C/C:H/I:N/A:N - Weakness
- CWE-918, CWE-1188
- Updated
- 2026-11-02
EUVDEUVD-2026-27265
OpenClaw before 2026.4.14 contains a server-side request forgery vulnerability in browser SSRF policy that allows private-network navigation by default. Attackers can exploit this misconfiguration to access internal services or metadata endpoints through browser-driven requests.
- Record
EUVD-2026-27265- CVSS 4.0
- 6.3 Medium
CVSS:4.0/AV:N/AC:L/AT:N/PR:L/UI:N/VC:N/VI:N/VA:N/SC:H/SI:N/SA:N - Updated
- 2026-11-02
GitHub AdvisoriesGHSA-53vx-pmqw-863c
OpenClaw: Browser SSRF policy default allowed private-network navigation
Summary
Browser SSRF policy default allowed private-network navigation.
Affected Packages / Versions
- Package:
openclaw - Ecosystem: npm
- Affected versions:
< 2026.4.14 - Patched versions:
>= 2026.4.14
Impact
Browser SSRF protection could allow private-network navigation by default in paths where restrictive behavior was expected, exposing internal services or metadata endpoints through browser-driven requests.
Technical Details
The fix preserves strict SSRF configuration semantics, keeps private-network access disabled unless explicitly opted in, and updates loopback CDP readiness handling for the stricter default.
Fix
The issue was fixed in #66354 and #66386. The first stable tag containing the fix is v2026.4.14, and [email protected] includes the fix.
Fix Commit(s)
024f4614a1a1831406e763adc40ef226e3d5e9ed1dabfef28db523e7de81edeb3dd689e9171236a2213c36cf51121ef6c05cfccd78037371f968f31a7eecfa411df3d12e6b810e6ca5df47254fc3db3f- PR: #66354, #66386
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.
- Record
GHSA-53vx-pmqw-863c- CVSS 4.0
- 6.9 Medium
CVSS: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
- 7.7 High
CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:C/C:H/I:N/A:N - Weakness
- CWE-918, CWE-1188
- Updated
- 2026-11-02
NVD
OpenClaw before 2026.4.14 contains a server-side request forgery vulnerability in browser SSRF policy that allows private-network navigation by default. Attackers can exploit this misconfiguration to access internal services or metadata endpoints through browser-driven requests.
- Record
CVE-2026-43527- CVSS 4.0
- 6.3 Medium
CVSS:4.0/AV:N/AC:L/AT:N/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 - CVSS 3.1
- 7.7 High
CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:C/C:H/I:N/A:N - CVSS 3.1
- 7.7 High
CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:C/C:H/I:N/A:N - Weakness
- CWE-918, CWE-1188
- Updated
- 2026-11-02
OSV
OpenClaw < 2026.4.14 - Server-Side Request Forgery via Private Network Navigation
OpenClaw before 2026.4.14 contains a server-side request forgery vulnerability in browser SSRF policy that allows private-network navigation by default. Attackers can exploit this misconfiguration to access internal services or metadata endpoints through browser-driven requests.
- Record
CVE-2026-43527- CVSS 4.0
- 6.3 Medium
CVSS:4.0/AV:N/AC:L/AT:N/PR:L/UI:N/VC:N/VI:N/VA:N/SC:H/SI:N/SA:N - Weakness
- CWE-1188, CWE-918
- Updated
- 2026-11-02
OSVGHSA-53vx-pmqw-863c
OpenClaw: Browser SSRF policy default allowed private-network navigation
Summary
Browser SSRF policy default allowed private-network navigation.
Affected Packages / Versions
- Package:
openclaw - Ecosystem: npm
- Affected versions:
< 2026.4.14 - Patched versions:
>= 2026.4.14
Impact
Browser SSRF protection could allow private-network navigation by default in paths where restrictive behavior was expected, exposing internal services or metadata endpoints through browser-driven requests.
Technical Details
The fix preserves strict SSRF configuration semantics, keeps private-network access disabled unless explicitly opted in, and updates loopback CDP readiness handling for the stricter default.
Fix
The issue was fixed in #66354 and #66386. The first stable tag containing the fix is v2026.4.14, and [email protected] includes the fix.
Fix Commit(s)
024f4614a1a1831406e763adc40ef226e3d5e9ed1dabfef28db523e7de81edeb3dd689e9171236a2213c36cf51121ef6c05cfccd78037371f968f31a7eecfa411df3d12e6b810e6ca5df47254fc3db3f- PR: #66354, #66386
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.
- Record
GHSA-53vx-pmqw-863c- CVSS 4.0
- 6.9 Medium
CVSS: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
- 7.7 High
CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:C/C:H/I:N/A:N - Weakness
- CWE-1188, CWE-918
- Updated
- 2026-11-02
Affected products
Affected packages
| Package | Affected | Fixed |
|---|---|---|
openclawnpm |
before 2026.4.14 | 2026.4.14 |
History
| Recorded | Changed | Sources |
|---|---|---|
| first indexed | CVE List, EUVD, GitHub Advisories, NVD, OSV |
Dates are when Every CVE recorded each change. Upstream dates may differ.
In short
CVE-2026-43527 is a medium vulnerability (CVSS 6.3) in Openclaw, published April 17, 2026. No source lists public exploit code. EPSS puts the chance of exploitation in the next 30 days at 0.28%, the 20th percentile. Fixed in openclaw 2026.4.14.
References
github.com/openclaw/openclaw/security/advisories/GHSA-53vx-pmqw-863c
vulncheck.com/advisories/openclaw-server-side-request-forgery-via-private-network-navigation