CVE-2025-14822

Summary

Mattermost versions 10.11.x <= 10.11.8 fail to validate input size before processing hashtags which allows an authenticated attacker to exhaust CPU resources via a single HTTP request containing a post with thousands space-separated tokens

Affected Software

VendorProductVersion RangeStatus
MattermostMattermost10.11.0 <= 10.11.8affected
MattermostMattermost11.2.0unaffected
MattermostMattermost10.11.9unaffected

Weaknesses

  • CWE-407: CWE-407: Inefficient Algorithmic Complexity

ADP Enrichment

CISA ADP Vulnrichment

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

References