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CVE-2026-10542

Playbooks channel action update validation issue PUBLISHED

Description (CNA)

Mattermost versions 11.9.x <= 11.9.0, 11.8.x <= 11.8.4, 11.7.x <= 11.7.7, 10.11.x <= 10.11.22 fail to validate channel action ownership which allows channel managers to update actions in other channels via the channel action update endpoint.. Mattermost Advisory ID: MMSA-2026-00692

Affected (CNA)

Vendor / productVersions
Mattermost / Mattermostaffected 11.9.0 through 11.9.0; affected 11.8.0 through 11.8.4; affected 11.7.0 through 11.7.7; affected 10.11.0 through 10.11.22; unaffected 11.10.0; unaffected 11.9.1; unaffected 11.8.5; unaffected 11.7.8; unaffected 10.11.23

CWE

CWE-639

References

ADP enrichment

CISA-ADP

No English description supplied.

No references supplied.