What is CVE-2026-28471?

CVE-2026-28471 is a medium-severity vulnerability in Openclaw, classified under Improper Authentication. CVSS score: 5.3/10. Published 2026-03-05.

How severe is CVE-2026-28471?

Medium severity. CVSS v3 base score is 5.3 out of 10.

Auth bypass in Openclaw

CVE-2026-28471

OpenClaw version 2026.1.14-1 prior to 2026.2.2, with the Matrix plugin installed and enabled, contain a vulnerability in which DM allowlist matching could be bypassed by exact-matching against sender display names and localparts without homeserver validation. Remote Matrix users can impersonate allowed identities by using attacker-controlled display names or matching localparts from different homeservers to reach the routing and agent pipeline.

Vulnerability class: Broken Authentication

EPSS: 0.002 (14.1th percentile) — read the EPSS interpretation.

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:L/I:N/A:N.

Affected products

Openclaw — versions 2026.1.14-1

Weakness classification (CWE)

CWE-287 — Improper Authentication

References

disclosure@vulncheck.com (vendor-advisory, Vendor Advisory)
disclosure@vulncheck.com (Patch, patch)
disclosure@vulncheck.com (Third Party Advisory, third-party-advisory)

Frequently asked questions

What is CVE-2026-28471?: CVE-2026-28471 is a medium-severity vulnerability in Openclaw, classified under Improper Authentication. CVSS score: 5.3/10. Published 2026-03-05.
How severe is CVE-2026-28471?: Medium severity. CVSS v3 base score is 5.3 out of 10.