CVE-2025-13767 | THREATINT

Description

Mattermost versions 11.1.x <= 11.1.0, 11.0.x <= 11.0.5, 10.12.x <= 10.12.3, 10.11.x <= 10.11.7 fails to validate user channel membership when attaching Mattermost posts as comments to Jira issues, which allows an authenticated attacker with access to the Jira plugin to read post content and attachments from channels they do not have access to.

PUBLISHED Reserved 2025-11-27 | Published 2025-12-24 | Updated 2025-12-24 | Assigner Mattermost

MEDIUM: 4.3CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:L/I:N/A:N

Problem types

CWE-863: Incorrect Authorization

Product status

Default status

unaffected

11.1.0 (semver)

affected

11.0.0 (semver)

affected

10.12.0 (semver)

affected

10.11.0 (semver)

affected

11.2.0

unaffected

11.1.1

unaffected

11.0.6

unaffected

10.12.4

unaffected

10.11.8

unaffected

Credits

Juho Forsén finder

References

mattermost.com/security-updates

cve.org (CVE-2025-13767)

nvd.nist.gov (CVE-2025-13767)

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