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.
Attack Parameters
Attack Vector
Network
Атака возможна удалённо
Attack Complexity
Low
Легко эксплуатировать
Attack Requirements
None
Нет дополнительных условий
Privileges Required
None
Права не нужны
User Interaction
None
Не нужно действие пользователя
Impact Assessment
Confidentiality
High
Полная утечка данных
Integrity
High
Полная модификация данных
Availability
High
Полный отказ в обслуживании
CVSS Vector v4.0
Weakness Type (CWE)
References 3
https://github.com/openclaw/openclaw/commit/6b4b6049b47c3329a701450959464782666…
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-v…
disclosure@vulncheck.com