Vulnerability in Openclaw
CVE-2026-41299
OpenClaw before 2026.3.28 contains an authorization bypass vulnerability in the chat.send gateway method where ACP-only provenance fields are gated by self-declared client metadata from WebSocket handshake rather than verified authorization state. Authenticated operator clients can spoof ACP identity labels and inject reserved provenance fields intended only for the ACP bridge by manipulating client metadata during connection.
Published · last modified .
CVSS v3 metric
CVSS v3 base score 7.1 (High). Vector: CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:L/I:H/A:N.
EPSS exploit prediction
EPSS: 0.004 (26.3th percentile), scored .
Very low probability of exploitation in the next 30 days; routine patching cadence is appropriate. 26th percentile — 26.3% of CVEs in the catalogue have a lower EPSS than this one. How to read EPSS.
EPSS over last 30 days · oldest: 0.002 · newest: 0.004 · change: +0.001
Affected products
- Openclaw — versions 0, 2026.3.28
Weakness classification (CWE)
References
- github.com/openclaw/openclaw/security/advisories/GHSA-6xg4-82hv-cp6f (vendor-advisory, Vendor Advisory)
- www.vulncheck.com/advisories/openclaw-client-identity-spoofing-in-chat-send-gat… (Third Party Advisory, third-party-advisory)
Frequently asked questions
- What is CVE-2026-41299?
- CVE-2026-41299 is a high-severity vulnerability in Openclaw, classified under CWE-807. CVSS score: 7.1/10. Published 2026-04-21.
- How severe is CVE-2026-41299?
- High severity. CVSS v3 base score is 7.1 out of 10.