CVE-2026-3524 (GCVE-0-2026-3524)

Vulnerability from cvelistv5 – Published: 2026-04-06 12:06 – Updated: 2026-04-07 03:55
VLAI?
Title
Authorization Bypass in Mattermost Legal Hold Plugin Due to Missing Return After Permission Check
Summary
Mattermost Plugin Legal Hold versions <=1.1.4 fail to halt request processing after a failed authorization check in ServeHTTP which allows an authenticated attacker to access, create, download, and delete legal hold data via crafted API requests to the plugin's endpoints. Mattermost Advisory ID: MMSA-2026-00621
Severity ?
8.3 (High)
CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H
CWE
Assigner
References
Impacted products
Vendor Product Version
Mattermost Mattermost Affected: 0 , ≤ 1.1.4 (semver)
Unaffected: 1.1.5
Create a notification for this product.
Credits
Hassan Mohammed
Show details on NVD website
To clipboard 

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  • Seen: The vulnerability was mentioned, discussed, or observed by the user.
  • Confirmed: The vulnerability has been validated from an analyst's perspective.
  • Published Proof of Concept: A public proof of concept is available for this vulnerability.
  • Exploited: The vulnerability was observed as exploited by the user who reported the sighting.
  • Patched: The vulnerability was observed as successfully patched by the user who reported the sighting.
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