CVE-2024-10214: Incorrect Session Creation with Desktop SSO

Severity: low (CVSS 3.5 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: 2024-10-28 · updated 2026-06-17
Weakness: CWE-303

Description

Mattermost versions 9.11.X <= 9.11.1, 9.5.x <= 9.5.9 icorrectly issues two sessions when using desktop SSO - one in the browser and one in desktop with incorrect settings.

Affected products

Mattermost App Framework: from 9.5.0 through 9.5.9; from 9.11.0 through 9.11.1

References

https://mattermost.com/security-updates

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