CVE-2026-28474

OpenClaw's Nextcloud Talk plugin versions prior to 2026.2.6 accept equality matching on the mutable actor.name display name field for allowlist validation, allowing attackers to bypass DM and room allowlists. An attacker can change their Nextcloud display name to match an allowlisted user ID and gain unauthorized access to restricted conversations.

CVSS v3 9.8 CRITICAL

9.8^/10

CVSS v3 : CRITICAL

Vector :

Exploitability : 3.9 / Impact : 5.9

Attack Vector NETWORK

Attack Complexity LOW

Privileges Required NONE

User Interaction NONE

Confidentiality Impact HIGH

Integrity Impact HIGH

Availability Impact HIGH

Scope UNCHANGED

References

Link	Resource
https://github.com/openclaw/openclaw/commit/6b4b6049b47c3329a7014509594647826669892d
https://github.com/openclaw/openclaw/security/advisories/GHSA-r5h9-vjqc-hq3r
https://www.vulncheck.com/advisories/openclaw-nextcloud-talk-allowlist-bypass-via-actorname-display-name-spoofing

Configurations

No configuration.

History

No history.

Information

Published : 2026-03-05 22:16

Updated : 2026-03-09 13:36

NVD link : CVE-2026-28474

Mitre link : CVE-2026-28474

CVE.ORG link : CVE-2026-28474

JSON object : View

Products Affected

No product.

CWE

CWE-863

Incorrect Authorization

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