CVE-2025-41395

Description

Mattermost versions 10.4.x <= 10.4.2, 10.5.x <= 10.5.0, 9.11.x <= 9.11.10 fail to properly validate the props used by the RetrospectivePost custom post type in the Playbooks plugin, which allows an attacker to create a specially crafted post with maliciously crafted props and cause a denial of service (DoS) of the web app for all users.

Reserved 2025-04-22 | Published 2025-04-24 | Updated 2025-04-24 | Assigner Mattermost

Problem types

CWE-1287: Improper Validation of Specified Type of Input

Product status

Default status
unaffected

10.4.0
affected

10.5.0
affected

9.11.0
affected

10.6.0
unaffected

10.4.3
unaffected

10.5.1
unaffected

9.11.11
unaffected

Credits

c0rydoras (c0rydoras) finder

References

mattermost.com/security-updates

cve.org (CVE-2025-41395)

nvd.nist.gov (CVE-2025-41395)

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