CVE-2026-28474
OpenClaw Nextcloud Talk < 2026.2.6 - Allowlist Bypass via actor.name Display Name Spoofing
CVSS Score
9.8
EPSS Score
0.0%
EPSS Percentile
0th
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.
| CWE | CWE-863 |
| Vendor | openclaw |
| Product | nextcloud-talk |
| Published | Mar 5, 2026 |
| Last Updated | Mar 9, 2026 |
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CVSS v3 Breakdown
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H Attack Vector
Network
Attack Complexity
Low
Privileges Required
None
User Interaction
None
Scope
Unchanged
Confidentiality
High
Integrity
High
Availability
High
Affected Versions
OpenClaw / nextcloud-talk
0 < 2026.2.6
References
github.com: https://github.com/openclaw/openclaw/security/advisories/GHSA-r5h9-vjqc-hq3r github.com: https://github.com/openclaw/openclaw/commit/6b4b6049b47c3329a7014509594647826669892d vulncheck.com: https://www.vulncheck.com/advisories/openclaw-nextcloud-talk-allowlist-bypass-via-actorname-display-name-spoofing
Credits
🔍 @MegaManSec (https://joshua.hu) of AISLE Research Team