Vulnerability in Openclaw
CVE-2026-3690
OpenClaw Canvas Authentication Bypass Vulnerability. This vulnerability allows remote attackers to bypass authentication on affected installations of OpenClaw. Authentication is not required to exploit this vulnerability. The specific flaw exists within the implementation of the the authentication function for canvas endpoints. The issue results from improper implementation of authentication. An attacker can leverage this vulnerability to bypass authentication on the system. Was ZDI-CAN-29311.
Published · last modified .
CVSS v3 metric
CVSS v3 base score 7.4 (High). Vector: CVSS:3.0/AV:N/AC:H/PR:N/UI:N/S:U/C:H/I:H/A:N.
EPSS exploit prediction
EPSS: 0.006 (49.4th percentile), scored .
Very low probability of exploitation in the next 30 days; routine patching cadence is appropriate. 49th percentile — 49.4% of CVEs in the catalogue have a lower EPSS than this one. How to read EPSS.
EPSS over last 30 days · oldest: 0.007 · newest: 0.006 · change: -0.000
Affected products
- Openclaw — versions 2026.2.17
Weakness classification (CWE)
References
- www.zerodayinitiative.com/advisories/ZDI-26-228/ (x_research-advisory, Exploit, Third Party Advisory)
- github.com/openclaw/openclaw/security/advisories/GHSA-vvjh-f6p9-5vcf (Exploit, vendor-advisory, Third Party Advisory)
Frequently asked questions
- What is CVE-2026-3690?
- CVE-2026-3690 is a high-severity vulnerability in Openclaw, classified under Reliance on IP Address for Authentication. CVSS score: 7.4/10. Published 2026-04-11.
- How severe is CVE-2026-3690?
- High severity. CVSS v3 base score is 7.4 out of 10.