CVE-2026-28474

CriticalCVSS 9.8/10Last modified Sep 17, 2026

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.

Metrics

CVSS 3.1 9.8/10CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H

Weakness enumeration

CWE-863

Affected software

No affected versions have been published.

Timeline

Published: Mar 5, 2026
Last modified: Sep 17, 2026
NVD status: Analyzed

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