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Permalink CVE-2026-22892
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): Low (L)
  • Integrity (I): None (N)
  • 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): Low (L)
  • Modified Scope (MS): Unchanged (U)
  • Modified Integrity (MI): None (N)
  • Modified Availability (MA): None (N)
updated 5 months, 2 weeks ago by @LeSuisse Activity log
  • Created suggestion 5 months, 2 weeks ago
  • @LeSuisse ignored
    6 packages
    • mattermost
    • mattermostLatest
    • mattermost-desktop
    • python312Packages.mattermostdriver
    • python313Packages.mattermostdriver
    • python314Packages.mattermostdriver
    5 months, 2 weeks ago
  • @LeSuisse dismissed 5 months, 2 weeks ago
Insufficient Authorization in Mattermost Jira Plugin Allows Unauthorized Access to Post Attachments

Mattermost versions 11.1.x <= 11.1.2, 10.11.x <= 10.11.9, 11.2.x <= 11.2.1 fail to validate user permissions when creating Jira issues from Mattermost posts, which allows an authenticated attacker with access to the Jira plugin to read post content and attachments from channels they do not have access to via the /create-issue API endpoint by providing the post ID of an inaccessible post.. Mattermost Advisory ID: MMSA-2025-00550

References

Affected products

Mattermost
  • ==10.11.10
  • ==11.3.0
  • =<11.1.2
  • ==11.1.3
  • =<10.11.9
  • =<11.2.1
  • ==11.2.2
Ignored packages (6)

pkgs.mattermost

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

pkgs.mattermostLatest

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

Mattermost Jira plugin is not packaged in nixpkgs.

https://github.com/mattermost/mattermost-plugin-jira