CVE-2026-3112

Summary

Mattermost versions 11.4.x <= 11.4.0, 11.3.x <= 11.3.1, 11.2.x <= 11.2.3, 10.11.x <= 10.11.11 fail to validate Advanced Logging file target paths which allows system administrators to read arbitrary host files via malicious AdvancedLoggingJSON configuration in support packet generation. Mattermost Advisory ID: MMSA-2025-00562

Affected Software

VendorProductVersion RangeStatus
MattermostMattermost11.4.0 <= 11.4.0affected
MattermostMattermost11.3.0 <= 11.3.1affected
MattermostMattermost11.2.0 <= 11.2.3affected
MattermostMattermost10.11.0 <= 10.11.11affected
MattermostMattermost11.5.0unaffected
MattermostMattermost11.4.1unaffected
MattermostMattermost11.3.2unaffected
MattermostMattermost11.2.4unaffected
MattermostMattermost10.11.12unaffected

Weaknesses

  • CWE-22: CWE-22: Improper Limitation of a Pathname to a Restricted Directory ('Path Traversal')

ADP Enrichment

CISA ADP Vulnrichment

  • SSVC:
  • Exploitation: none
    • Automatable: no
    • Technical Impact: partial

References