CVE-2025-14822
DoS from quadratic complexity in model.ParseHashtags
Summary
DoS from quadratic complexity in model.ParseHashtags
Original description
The description as published by the source.
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
Source: OSV.dev (Open Source Vulnerabilities) NVD GitHub Advisory OSV
References
- advisory github.com
- advisory nvd.nist.gov
- web mattermost.com