CVE-2026-43576
OpenClaw < 2026.4.5 - Second-hop SSRF via CDP /json/version WebSocket URL
OpenClaw before 2026.4.5 contains a server-side request forgery vulnerability in the CDP /json/version WebSocket endpoint that allows attackers to pivot to untrusted second-hop targets. The webSocketDebuggerUrl response field is not properly validated, enabling attackers to redirect connections to arbitrary hosts and perform SSRF-style attacks.
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 < 2026.4.5 - Second-hop SSRF via CDP /json/version WebSocket URL
OpenClaw before 2026.4.5 contains a server-side request forgery vulnerability in the CDP /json/version WebSocket endpoint that allows attackers to pivot to untrusted second-hop targets. The webSocketDebuggerUrl response field is not properly validated, enabling attackers to redirect connections to arbitrary hosts and perform SSRF-style attacks.
- Record
CVE-2026-43576- CVSS 4.0
- 4.9 Medium
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 - 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-601, CWE-918
- Updated
- 2026-11-02
EUVDEUVD-2026-28164
OpenClaw before 2026.4.5 contains a server-side request forgery vulnerability in the CDP /json/version WebSocket endpoint that allows attackers to pivot to untrusted second-hop targets. The webSocketDebuggerUrl response field is not properly validated, enabling attackers to redirect connections to arbitrary hosts and perform SSRF-style attacks.
- Record
EUVD-2026-28164- CVSS 4.0
- 4.9 Medium
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 - Updated
- 2026-11-02
GitHub AdvisoriesGHSA-3r56-7hhr-vfg9
Duplicate Advisory: OpenClaw: CDP /json/version WebSocket URL could pivot to untrusted second-hop targets
Duplicate Advisory
This advisory has been withdrawn because it is a duplicate of GHSA-f7fh-qg34-x2xh. This link is maintained to preserve external references.
Original Description
OpenClaw before 2026.4.5 contains a server-side request forgery vulnerability in the CDP /json/version WebSocket endpoint that allows attackers to pivot to untrusted second-hop targets. The webSocketDebuggerUrl response field is not properly validated, enabling attackers to redirect connections to arbitrary hosts and perform SSRF-style attacks.
- Record
GHSA-3r56-7hhr-vfg9- CVSS 4.0
- 4.9 Medium
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 - 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-601
- Updated
- 2026-11-02
GitHub AdvisoriesGHSA-f7fh-qg34-x2xh
OpenClaw: CDP /json/version WebSocket URL could pivot to untrusted second-hop targets
Summary
CDP /json/version WebSocket URL could pivot to untrusted second-hop targets.
Affected Packages / Versions
- Package:
openclaw - Ecosystem: npm
- Affected versions:
< 2026.4.5 - Patched versions:
>= 2026.4.5
Impact
A browser profile could trust a CDP /json/version response whose webSocketDebuggerUrl pointed at a different host, enabling a second-hop SSRF-style pivot.
Technical Details
The fix normalizes and re-validates direct CDP WebSocket targets before connecting.
Fix
The issue was fixed in #60469. The first stable tag containing the fix is v2026.4.5, and [email protected] includes the fix.
Fix Commit(s)
bc356cc8c2beaa747c71dd86cceab8f804699665- PR: #60469
Release Process Note
Users should upgrade to openclaw 2026.4.5 or newer. The latest npm release, 2026.4.14, already includes the fix.
Credits
Thanks to @tdjackey for reporting this issue.
- Record
GHSA-f7fh-qg34-x2xh- CVSS 4.0
- 4.9 Medium
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 - 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-601, CWE-918
- Updated
- 2026-11-02
NVD
OpenClaw before 2026.4.5 contains a server-side request forgery vulnerability in the CDP /json/version WebSocket endpoint that allows attackers to pivot to untrusted second-hop targets. The webSocketDebuggerUrl response field is not properly validated, enabling attackers to redirect connections to arbitrary hosts and perform SSRF-style attacks.
- Record
CVE-2026-43576- CVSS 4.0
- 4.9 Medium
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 - 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-601, CWE-918
- Updated
- 2026-11-02
OSV
OpenClaw < 2026.4.5 - Second-hop SSRF via CDP /json/version WebSocket URL
OpenClaw before 2026.4.5 contains a server-side request forgery vulnerability in the CDP /json/version WebSocket endpoint that allows attackers to pivot to untrusted second-hop targets. The webSocketDebuggerUrl response field is not properly validated, enabling attackers to redirect connections to arbitrary hosts and perform SSRF-style attacks.
- Record
CVE-2026-43576- CVSS 4.0
- 4.9 Medium
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 - Weakness
- CWE-601, CWE-918
- Updated
- 2026-11-02
OSVGHSA-3r56-7hhr-vfg9
Duplicate Advisory: OpenClaw: CDP /json/version WebSocket URL could pivot to untrusted second-hop targets
Duplicate Advisory
This advisory has been withdrawn because it is a duplicate of GHSA-f7fh-qg34-x2xh. This link is maintained to preserve external references.
Original Description
OpenClaw before 2026.4.5 contains a server-side request forgery vulnerability in the CDP /json/version WebSocket endpoint that allows attackers to pivot to untrusted second-hop targets. The webSocketDebuggerUrl response field is not properly validated, enabling attackers to redirect connections to arbitrary hosts and perform SSRF-style attacks.
- Record
GHSA-3r56-7hhr-vfg9- CVSS 4.0
- 4.9 Medium
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 - 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-601
- Updated
- 2026-11-02
OSVGHSA-f7fh-qg34-x2xh
OpenClaw: CDP /json/version WebSocket URL could pivot to untrusted second-hop targets
Summary
CDP /json/version WebSocket URL could pivot to untrusted second-hop targets.
Affected Packages / Versions
- Package:
openclaw - Ecosystem: npm
- Affected versions:
< 2026.4.5 - Patched versions:
>= 2026.4.5
Impact
A browser profile could trust a CDP /json/version response whose webSocketDebuggerUrl pointed at a different host, enabling a second-hop SSRF-style pivot.
Technical Details
The fix normalizes and re-validates direct CDP WebSocket targets before connecting.
Fix
The issue was fixed in #60469. The first stable tag containing the fix is v2026.4.5, and [email protected] includes the fix.
Fix Commit(s)
bc356cc8c2beaa747c71dd86cceab8f804699665- PR: #60469
Release Process Note
Users should upgrade to openclaw 2026.4.5 or newer. The latest npm release, 2026.4.14, already includes the fix.
Credits
Thanks to @tdjackey for reporting this issue.
- Record
GHSA-f7fh-qg34-x2xh- CVSS 4.0
- 4.9 Medium
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 - 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-601, CWE-918
- Updated
- 2026-11-02
Affected products
Affected packages
| Package | Affected | Fixed |
|---|---|---|
openclawnpm |
before 2026.4.5 | 2026.4.5 |
History
| Recorded | Changed | Sources |
|---|---|---|
| affected | ||
| first indexed | CVE List, EUVD, GitHub Advisories, NVD, OSV |
Dates are when Every CVE recorded each change. Upstream dates may differ.
In short
CVE-2026-43576 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 0.27%, the 18th percentile. Fixed in openclaw 2026.4.5.
References
github.com/openclaw/openclaw/security/advisories/GHSA-f7fh-qg34-x2xh
vulncheck.com/advisories/openclaw-second-hop-ssrf-via-cdp-json-version-websocket-url
nvd.nist.gov/vuln/detail/CVE-2026-43576