Mattermost
CVE-2025-14822
LOW
Severity by source
AV:N/AC:H/PR:L/UI:N/S:U/C:N/I:N/A:L
Primary rating from NVD · only source for this CVE.
CVSS VectorNVD
Lifecycle Timeline
3DescriptionCVE.org
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
AnalysisAI
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 [CVSS 3.1 LOW]
Technical ContextAI
Affects Mattermost Server. 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
RemediationAI
Monitor vendor advisories for a patch. Restrict network access to the affected service where possible.
More in Mattermost
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Same weakness CWE-407 – Inefficient Algorithmic Complexity
View allSame technique Information Disclosure
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External POC / Exploit Code
Leaving vuln.today
GHSA-9r42-rhw3-2222