CVE-2026-28471 OpenClaw has a Matrix allowlist bypass via displayName and cross-homeserver localpart matching

Medium 6.3 Published Updated

Remote attackers can bypass DM allowlists in the OpenClaw Matrix plugin by spoofing display names or localparts, gaining unauthorized access to the agent pipeline.

Exploited in the wild
Not known
Login needed
Not needed
Attackable
Over the internet
Victim action needed
Not needed
Fix
Available

What is CVE-2026-28471?

CVE-2026-28471 is a medium-severity authentication bypass vulnerability in Openclaw Openclaw, published on 5 Mar 2026. An attacker can exploit it over the internet without logging in, with no action from the victim.

Official description

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.

Weakness: CWE-287

Which versions are affected by CVE-2026-28471?

2 open source packages ship an affected version, including openclaw. It affects 1 product.

PackageAffectedFixed in
openclaw npmFrom 2026.1.14-12026.2.2
openclaw npmFrom 2026.1.14-12026.2.2

Products include Openclaw Openclaw.

How do I fix CVE-2026-28471?

Upgrade openclaw to 2026.2.2 or later.

Upgrade, and rotate credentials and sessions that may have been exposed. More about Authentication bypass.

Is CVE-2026-28471 being exploited?

There is no known exploitation of CVE-2026-28471 in the wild and no public exploit code.

All Openclaw Openclaw vulnerabilities

Sources

Also known as GHSA-rmxw-jxxx-4cpc.

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