What’s Vulnerable › Vulnerabilities
CVE-2022-0903: Stack overflow in SAML login in Mattermost
- Severity: high (CVSS 7.5 v3.1)
- Exploited in the wild: not listed in CISA KEV
- EPSS: 0.8% probability of exploitation in the next 30 days
- Public exploit or detection template: none known
- Published: 2022-03-10 · updated 2026-06-17
- Weakness: CWE-787
Description
A call stack overflow bug in the SAML login feature in Mattermost server in versions up to and including 6.3.2 allows an attacker to crash the server via submitting a maliciously crafted POST body.
Affected products
- Mattermost: before 5.37.8; from 6.0.0 before 6.1.3; from 6.2.0 before 6.2.3; from 6.3.0 before 6.3.3 — fixed in 5.37.8, 6.1.3, 6.2.3, 6.3.3
How to fix
Upgrade to a fixed version: Mattermost 5.37.8, 6.1.3, 6.2.3, 6.3.3. Check the vendor advisory for mitigations.
References
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