VULNERABILITY INTELLIGENCE

CVE-2026-28474

CVSS score9.8 CRITICAL
EPSS probability0.55%
CISA KEVNot currently listed
Published2026-03-05
Last modified2026-09-17
CVSS vectorCVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H

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.

Weakness classification

  • disclosure@vulncheck.com: CWE-863

Primary references