Vulnerability in Openclaw
CVE-2026-35661
OpenClaw before 2026.3.25 contains an authorization bypass vulnerability in Telegram callback query handling that allows attackers to mutate session state without satisfying normal DM pairing requirements. Remote attackers can exploit weaker callback-only authorization in direct messages to bypass DM pairing and modify session state.
Published · last modified .
CVSS v3 metric
CVSS v3 base score 5.3 (Medium). Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:L/A:N.
EPSS exploit prediction
EPSS: 0.005 (40.1th percentile), scored .
Very low probability of exploitation in the next 30 days; routine patching cadence is appropriate. 40th percentile — 40.1% of CVEs in the catalogue have a lower EPSS than this one. How to read EPSS.
EPSS over last 30 days · oldest: 0.003 · newest: 0.005 · change: +0.002
Affected products
- Openclaw — versions 0, 2026.3.25
Weakness classification (CWE)
References
- github.com/openclaw/openclaw/security/advisories/GHSA-j4c9-w69r-cw33 (vendor-advisory, Vendor Advisory, third-party-advisory)
- github.com/openclaw/openclaw/commit/269282ac69ab6030d5f30d04822668f607f13065 (Patch, patch)
- www.vulncheck.com/advisories/openclaw-telegram-dm-scoped-inline-button-callback… (Third Party Advisory, third-party-advisory)
Frequently asked questions
- What is CVE-2026-35661?
- CVE-2026-35661 is a medium-severity vulnerability in Openclaw, classified under Authentication Bypass Using an Alternate Path or Channel. CVSS score: 5.3/10. Published 2026-04-10.
- How severe is CVE-2026-35661?
- Medium severity. CVSS v3 base score is 5.3 out of 10.