CVE-2026-28474

CRITICAL

9.8

Description

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.

Details CVE

Score CVSS v3.19.8

SeveriteCRITICAL

Vecteur CVSSCVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H

Vecteur d'attaqueNETWORK

ComplexiteLOW

Privileges requisNONE

Interaction utilisateurNONE

Publie3/5/2026

Derniere modification3/9/2026

Sourcenvd

Observations honeypot0

Faiblesses (CWE)

CWE-863

References

https://github.com/openclaw/openclaw/commit/6b4b6049b47c3329a7014509594647826669892d(disclosure@vulncheck.com)

https://github.com/openclaw/openclaw/security/advisories/GHSA-r5h9-vjqc-hq3r(disclosure@vulncheck.com)

https://www.vulncheck.com/advisories/openclaw-nextcloud-talk-allowlist-bypass-via-actorname-display-name-spoofing(disclosure@vulncheck.com)

Correlations IOC

Aucune correlation enregistree

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