CVE-2026-53837

MediumCVSS 5.3/10Last modified Jul 23, 2026

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.

Metrics

CVSS 3.1 5.3/10CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:L/A:N

Weakness enumeration

CWE-636

Affected software

VendorProductVersions
OpenClawOpenClaw< 2026.5.6

References

Timeline

Published
Jun 12, 2026
Last modified
Jul 23, 2026
NVD status
Analyzed

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CVE-2026-53837: Medium severity, CVSS 5.3 | Vulnix