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Medium severity5.5NVD Advisory· Published Sep 14, 2026

CVE-2026-82920

CVE-2026-82920

Description

Mattermost versions 11.9.x <= 11.9.0, 11.8.x <= 11.8.4, 11.7.x <= 11.7.7 fail to enforce authorization boundaries on the access control policy update endpoint which allows a channel or team administrator to detach a system-assigned ABAC parent policy via a crafted PUT /api/v4/access_control_policies request with an empty imports list.. Mattermost Advisory ID: MMSA-2026-00724

AI Insight

LLM-synthesized narrative grounded in this CVE's description and references.

Affected products

2
  • Mattermost/Mattermostinferred2 versions
    <=11.7.7+ 1 more
    • (no CPE)range: <=11.7.7
    • (no CPE)range: <=11.9.0, <=11.8.4, <=11.7.7

Patches

Vulnerability mechanics

References

1

News mentions

0

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