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Untriaged
Permalink CVE-2026-3524
8.3 HIGH
  • CVSS version: 3.1
  • Attack vector (AV): NETWORK
  • Attack complexity (AC): LOW
  • Privileges required (PR): LOW
  • User interaction (UI): NONE
  • Scope (S): UNCHANGED
  • Confidentiality impact (C): HIGH
  • Integrity impact (I): HIGH
  • Availability impact (A): HIGH
created 1 week, 1 day ago
Authorization Bypass in Mattermost Legal Hold Plugin Due to Missing Return After Permission Check

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

References

Affected products

Mattermost
  • ==1.1.5
  • =<1.1.4

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Mattermost is an open source platform for secure collaboration across the entire software development lifecycle

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