CVE-2026-43576: OpenClaw < 2026.4.5 - Second-hop SSRF via CDP /json/version WebSocket URL

Severity: high (CVSS 7.7 v3.1)
Exploited in the wild: not listed in CISA KEV
EPSS: 0.3% probability of exploitation in the next 30 days
Public exploit or detection template: none known
Published: 2026-05-06 · updated 2026-06-17
Weakness: CWE-601

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.

Affected products

OpenClaw: before 2026.4.5 — fixed in 2026.4.5

How to fix

Upgrade to a fixed version: OpenClaw 2026.4.5. Check the vendor advisory for mitigations.

References

https://github.com/openclaw/openclaw/commit/bc356cc8c2beaa747c71dd86cceab8f804699665
https://github.com/openclaw/openclaw/security/advisories/GHSA-f7fh-qg34-x2xh
https://www.vulncheck.com/advisories/openclaw-second-hop-ssrf-via-cdp-json-version-websocket-url

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