OpenClaw before 2026.5.6 contains an improper access control vulnerability in Mattermost event handlers that fails to validate channel type metadata. Attackers can bypass intended DM policy decisions by sending crafted Mattermost events missing channel type information to process restricted content.
Metrics
Affected Vendors & Products
References
History
Mon, 15 Jun 2026 15:30:00 +0000
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ssvc
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Fri, 12 Jun 2026 22:15:00 +0000
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| Description | OpenClaw before 2026.5.6 contains an improper access control vulnerability in Mattermost event handlers that fails to validate channel type metadata. Attackers can bypass intended DM policy decisions by sending crafted Mattermost events missing channel type information to process restricted content. | |
| Title | OpenClaw < 2026.5.6 - Missing Channel Type Validation in Mattermost Event Handlers | |
| First Time appeared |
Openclaw
Openclaw openclaw |
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| Weaknesses | CWE-636 | |
| CPEs | cpe:2.3:a:openclaw:openclaw:*:*:*:*:*:node.js:*:* | |
| Vendors & Products |
Openclaw
Openclaw openclaw |
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| References |
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| Metrics |
cvssV3_1
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Status: PUBLISHED
Assigner: VulnCheck
Published: 2026-06-12T21:57:00.613Z
Updated: 2026-06-15T15:10:01.881Z
Reserved: 2026-06-10T21:19:32.651Z
Link: CVE-2026-53837
Updated: 2026-06-15T15:09:57.975Z
Status : Analyzed
Published: 2026-06-12T22:16:55.567
Modified: 2026-06-16T00:21:33.940
Link: CVE-2026-53837
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