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Untriaged
Permalink CVE-2026-26304
4.3 MEDIUM
  • CVSS version (CVSS): 3.1
  • Attack Vector (AV): Network (N)
  • Attack Complexity (AC): Low (L)
  • Privileges Required (PR): Low (L)
  • User Interaction (UI): None (N)
  • Scope (S): Unchanged (U)
  • Confidentiality (C): None (N)
  • Integrity (I): Low (L)
  • Availability (A): None (N)
  • Modified Attack Vector (MAV): Network (N)
  • Modified Attack Complexity (MAC): Low (L)
  • Modified Privileges Required (MPR): Low (L)
  • Modified User Interaction (MUI): None (N)
  • Modified Confidentiality (MC): None (N)
  • Modified Scope (MS): Unchanged (U)
  • Modified Integrity (MI): Low (L)
  • Modified Availability (MA): None (N)
created 4 months, 1 week ago Activity log
  • Created suggestion 4 months, 1 week ago
Permission Bypass in Playbook Run Creation

Mattermost versions 11.3.x <= 11.3.0, 11.2.x <= 11.2.2 fail to verify run_create permission for empty playbookId, which allows team members to create unauthorized runs via the playbook run API. Mattermost Advisory ID: MMSA-2025-00542

References

Affected products

Mattermost
  • ==11.2.3
  • ==11.3.1
  • =<11.2.2
  • ==11.4.0
  • =<11.3.0

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pkgs.mattermost

Open source platform for secure collaboration across the entire software development lifecycle

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Open source platform for secure collaboration across the entire software development lifecycle

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