CVE-2026-43576 | THREATINT

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.

PUBLISHED Reserved 2026-05-01 | Published 2026-05-06 | Updated 2026-05-07 | Assigner VulnCheck

MEDIUM: 4.9CVSS:4.0/AV:N/AC:L/AT:P/PR:L/UI:N/VC:N/VI:N/VA:N/SC:H/SI:N/SA:N

HIGH: 7.7CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:C/C:H/I:N/A:N

Problem types

CWE-601 URL Redirection to Untrusted Site ('Open Redirect')

CWE-918 Server-Side Request Forgery (SSRF)

Product status

Default status

unaffected

Any version before 2026.4.5

affected

2026.4.5 (semver)

unaffected

Credits

Nicky (@nicky-cc) reporter

References

github.com/...enclaw/security/advisories/GHSA-f7fh-qg34-x2xh (GitHub Security Advisory (GHSA-f7fh-qg34-x2xh)) vendor-advisory

github.com/...ommit/bc356cc8c2beaa747c71dd86cceab8f804699665 (Patch Commit) patch

www.vulncheck.com/...ssrf-via-cdp-json-version-websocket-url (VulnCheck Advisory: OpenClaw < 2026.4.5 - Second-hop SSRF via CDP /json/version WebSocket URL) third-party-advisory

cve.org (CVE-2026-43576)

nvd.nist.gov (CVE-2026-43576)

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