CVE-2026-28474

CRITICAL

9.8

Descricao

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.

Detalhes CVE

Pontuacao CVSS v3.19.8

SeveridadeCRITICAL

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

Vetor de ataqueNETWORK

ComplexidadeLOW

Privilegios necessariosNONE

Interacao do usuarioNONE

Publicado3/5/2026

Ultima modificacao3/9/2026

Fontenvd

Avistamentos honeypot0

Fraquezas (CWE)

CWE-863

Referencias

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)

Correlacoes IOC

Sem correlacoes registradas

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