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CRITICALCVE-2026-28474Published Modified CNA VulnCheck

CVE-2026-28474: OpenClaw Nextcloud Talk < 2026.2.6 - Allowlist Bypass via actor.name Display Name Spoofing

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 v4.0
9.3
Severity
CRITICAL
Fixed in
2026.2.6
Affected Products
1

Fix available

2026.2.6
Patch commits
Affected packages
  • OpenClaw / nextcloud-talk
    < 2026.2.6 (from 0)
CVSS Vector
CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:H/VI:H/VA:H/SC:N/SI:N/SA:N
References