Vulnerability in Openclaw
CVE-2026-28480
OpenClaw versions prior to 2026.2.14 contain an authorization bypass vulnerability where Telegram allowlist matching accepts mutable usernames instead of immutable numeric sender IDs. Attackers can spoof identity by obtaining recycled usernames to bypass allowlist restrictions and interact with bots as unauthorized senders.
Published · last modified .
CVSS v3 metric
CVSS v3 base score 6.5 (Medium). Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:L/A:N.
EPSS exploit prediction
EPSS: 0.004 (27.7th percentile), scored .
Very low probability of exploitation in the next 30 days; routine patching cadence is appropriate. 28th percentile — 27.7% 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: +0.002
Affected products
- Openclaw — versions 0
Weakness classification (CWE)
References
- github.com/openclaw/openclaw/security/advisories/GHSA-mj5r-hh7j-4gxf (vendor-advisory, Vendor Advisory)
- github.com/openclaw/openclaw/commit/e3b432e481a96b8fd41b91273818e514074e05c3 (Patch, patch)
- github.com/openclaw/openclaw/commit/9e147f00b48e63e7be6964e0e2a97f2980854128 (Patch, patch)
- www.vulncheck.com/advisories/openclaw-identity-spoofing-via-mutable-username-in… (Third Party Advisory, third-party-advisory)
Frequently asked questions
- What is CVE-2026-28480?
- CVE-2026-28480 is a medium-severity vulnerability in Openclaw, classified under Authentication Bypass by Spoofing. CVSS score: 6.5/10. Published 2026-03-05.
- How severe is CVE-2026-28480?
- Medium severity. CVSS v3 base score is 6.5 out of 10.