CVE-2026-53811Network attack vector

Privilege escalation via mutable Matrix display-name matching

Published Jun 11, 2026 · Updated Jun 11, 2026

Authentication bypass in OpenClaw before 2026.5.7 allows remote authenticated users to gain unintended agent access through Matrix. The Matrix allowFrom policy treats mutable display-name metadata as identity and can match it to an entry intended for a different stable Matrix account. Exploitation requires an enabled, reachable Matrix allowFrom configuration and an account able to change its display name; resulting permissions depend on operator policy.

CVSS severity7.7
High
EPSS probability0.31%
Next 30 days · Sep 16, 2026
Known exploitationUnconfirmed
Based on sourced intelligence
Hinoki checkNot available
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Summary

What happened

Authentication bypass in OpenClaw before 2026.5.7 allows remote authenticated users to gain unintended agent access through Matrix. The Matrix allowFrom policy treats mutable display-name metadata as identity and can match it to an entry intended for a different stable Matrix account. Exploitation requires an enabled, reachable Matrix allowFrom configuration and an account able to change its display name; resulting permissions depend on operator policy.

The record

CVE
CVE-2026-53811
Published
Jun 11, 2026
Updated
Jun 11, 2026
Vendor
OpenClaw Foundation
Product
OpenClaw
Classifications
CWE-290, T1036
Attack vector
network
Privileges
authenticated

Timeline

How it unfolded

  1. Jun 11, 2026CVE publishedPublication date reported by the CVE source.
  2. Jun 11, 2026Record updatedLatest update available in the CVE record.

Exploitability

Present is not the same as exploitable

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Is a vulnerable build present?

Compare these published version ranges with your installed build and any vendor patches.

  1. Affected versionversion=0 <2026.5.7

What conditions does exploitation require?

Attack vectornetwork
Required privilegesauthenticated

What is affected?

OpenClaw Foundation · OpenClawversion=0 <2026.5.7

Published CVSS scores

8.8VulnCheckCVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H
7.7VulnCheckCVSS:4.0/AV:N/AC:L/AT:P/PR:L/UI:N/VC:H/VI:H/VA:H/SC:N/SI:N/SA:N

CVSS describes severity. EPSS estimates exploitation probability.

Attacks

What attackers are doing with it

Daily unique IPs observed by Shadowserver honeypots for known exploited vulnerabilities (KEVs). Missing observations do not establish an absence of attacks.

Daily unique IPsNo honeypot observations are available for this CVE in the selected window.

No observations available

Sep 10, 2026Sep 16, 2026
Latest reporting daySep 16, 2026
Latest daily unique IPsUnavailable
Prior 30-day averageUnavailable
SourceShadowserver honeypots (KEV)
Vectornetwork
Privilegesauthenticated
Known exploitationUnconfirmed
Public exploitUnconfirmed

Weakness, pattern, technique

CWE-290Authentication Bypass by Spoofing
T1036Masquerading

Public exploit references

No public exploit references are available in this record.

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Technologies

Your stack

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Your stack

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