What’s Vulnerable › Vulnerabilities

CVE-2017-18918

• Severity: medium (CVSS 4.9 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: 2020-06-19 · updated 2026-06-17
• Weakness: CWE-295

Description

An issue was discovered in Mattermost Server before 3.7.3 and 3.6.5. A System Administrator can place a SAML certificate at an arbitrary pathname.

Affected products

• Mattermost: from 3.6.0 before 3.6.5; from 3.7.0 before 3.7.3 — fixed in 3.6.5, 3.7.3

How to fix

Upgrade to a fixed version: Mattermost 3.6.5, 3.7.3. Check the vendor advisory for mitigations.

References

• https://mattermost.com/security-updates/
• https://mattermost.com/security-updates/

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