CVE-2025-14822 — DoS from quadratic complexity in model.ParseHashtags

CVE-2025-14822

DoS from quadratic complexity in model.ParseHashtags PUBLISHED

Description (CNA)

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 (CNA)

Vendor / product	Versions
Mattermost / Mattermost	affected 10.11.0 through 10.11.8; unaffected 11.2.0; unaffected 10.11.9

CWE

CWE-407

References

https://mattermost.com/security-updates

ADP enrichment

CISA-ADP

No English description supplied.

No references supplied.