What’s Vulnerable › Vulnerabilities
CVE-2023-3614: Denial of Service via specially crafted gif image
- Severity: low (CVSS 3.3 v3.1)
- Exploited in the wild: not listed in CISA KEV
- EPSS: 0.4% probability of exploitation in the next 30 days
- Public exploit or detection template: none known
- Published: 2023-07-17 · updated 2026-06-17
- Weakness: CWE-400
Description
Mattermost fails to properly validate a gif image file, allowing an attacker to consume a significant amount of server resources, making the server unresponsive for an extended period of time by linking to specially crafted image file.
Affected products
- Mattermost: before 7.8.7; from 7.9.0 before 7.9.5; from 7.10.0 before 7.10.3 — fixed in 7.10.3, 7.8.7, 7.9.5
How to fix
Upgrade to a fixed version: Mattermost 7.10.3, 7.8.7, 7.9.5. Check the vendor advisory for mitigations.
References
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