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Permalink CVE-2026-1628
4.6 MEDIUM
  • CVSS version (CVSS): 3.1
  • Attack Vector (AV): Network (N)
  • Attack Complexity (AC): Low (L)
  • Privileges Required (PR): Low (L)
  • User Interaction (UI): Required (R)
  • Scope (S): Unchanged (U)
  • Confidentiality (C): Low (L)
  • 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): Required (R)
  • Modified Confidentiality (MC): Low (L)
  • Modified Scope (MS): Unchanged (U)
  • Modified Integrity (MI): Low (L)
  • Modified Availability (MA): None (N)
updated 2 months, 3 weeks ago by @LeSuisse Activity log
  • Created suggestion 2 months, 3 weeks ago
  • @LeSuisse ignored
    5 packages
    • mattermost
    • mattermostLatest
    • python312Packages.mattermostdriver
    • python313Packages.mattermostdriver
    • python314Packages.mattermostdriver
    2 months, 3 weeks ago
  • @LeSuisse deleted
    2 maintainers
    • @liff
    • @jokogr
    2 months, 3 weeks ago maintainer.delete
  • @LeSuisse accepted 2 months, 3 weeks ago
  • @LeSuisse published on GitHub 2 months, 3 weeks ago
Mattermost allows external websites to open within the app, exposing preload functionality to non-trusted sites.

Mattermost Desktop App versions <=5.13.3 fail to attach listeners restricting navigation to external sites within the Mattermost app which allows a malicious server to expose preload script functionality to untrusted servers via having a user open an external link in their Mattermost server. Mattermost Advisory ID: MMSA-2026-00596

References

Affected products

Mattermost
  • =<5.13.3
  • ==5.13.4.0

Matching in nixpkgs

Ignored packages (5)

pkgs.mattermostLatest

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

Package maintainers

Ignored maintainers (2)