CVE-2026-28474

OpenClaw Nextcloud Talk < 2026.2.6 - Allowlist Bypass via actor.name Display Name Spoofing

Published: Mar 5, 2026Updated: Sep 17, 2026 Sources: CVE List NVD GHSA BDUCWE-863

9.8CRITICAL

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.

No summary for this CVE yet.

CVSS Vector Breakdown

Exploitability

AV:NAttack Vector

Network

AC:LAttack Complexity

Low

PR:NPrivileges Required

None

UI:NUser Interaction

None

Scope

S:UScope

Unchanged

Impact

C:HConfidentiality

High

I:HIntegrity

High

A:HAvailability

High

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Weaknesses

CWE-863

Affected Products

OpenClaw

oss-projectaka clawdbot, crabbox

nextcloud-talkOn-prem

AI / ML / ai-agent-tooling

openclawLibrary

OSS Libraries / npm

npm

package-ecosystem

@openclaw/nextcloud-talk

OSS Libraries

Сообщество свободного программного обеспечения

oss-projectaka fsf

OpenClawOn-prem

Operating Systems

Exploitability

Official Patch Available

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Attack Graph

Products CVE Techniques Tactics

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MITRE ATT&CK

2 techniques

Initial Access

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References

https://github.com/openclaw/openclaw/security/advisories/GHSA-r5h9-vjqc-hq3r

github.com

https://github.com/openclaw/openclaw/commit/6b4b6049b47c3329a7014509594647826669892d

github.com

https://www.vulncheck.com/advisories/openclaw-nextcloud-talk-allowlist-bypass-via-actorname-display-name-spoofing

vulncheck.com

and 6 more references View all →

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