What’s Vulnerable › Vulnerabilities
CVE-2023-5969: Denial of Service via Link Preview in /api/v4/redirect_location
- Severity: medium (CVSS 5.3 v3.1)
- Exploited in the wild: not listed in CISA KEV
- EPSS: 0.5% probability of exploitation in the next 30 days
- Public exploit or detection template: none known
- Published: 2023-11-06 · updated 2026-06-17
- Weakness: CWE-400
Description
Mattermost fails to properly sanitize the request to /api/v4/redirect_location allowing an attacker, sending a specially crafted request to /api/v4/redirect_location, to fill up the memory due to caching large items.
Affected products
- Mattermost App Framework: through 7.8.11; from 8.0.0 through 8.0.3; from 8.1.0 through 8.1.2; 9.0.0
References
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