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.

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.

EPSS: 0.002 (11.4th percentile) — read the EPSS interpretation.

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.

Affected products

Openclaw — versions 0

Weakness classification (CWE)

CWE-290 — Authentication Bypass by Spoofing

References

disclosure@vulncheck.com (vendor-advisory, Vendor Advisory)
disclosure@vulncheck.com (Patch, patch)
disclosure@vulncheck.com (Patch, patch)
disclosure@vulncheck.com (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.