CVE-2025-35965 — DoS in Mattermost Playbooks via Excessive Task Actions

CVE-2025-35965

DoS in Mattermost Playbooks via Excessive Task Actions PUBLISHED

Description (CNA)

Mattermost versions 10.4.x <= 10.4.2, 10.5.x <= 10.5.0, 9.11.x <= 9.11.10 fail to validate the uniqueness and quantity of task actions within the UpdateRunTaskActions GraphQL operation, which allows an attacker to create task items containing an excessive number of actions triggered by specific posts, overloading the server and leading to a denial-of-service (DoS) condition.

Affected (CNA)

Vendor / product	Versions
Mattermost / Mattermost	affected 10.4.0 through 10.4.2; affected 10.5.0; affected 9.11.0 through 9.11.10; unaffected 10.6.0; unaffected 10.4.3; unaffected 10.5.1; unaffected 9.11.11

CWE

CWE-770

References

https://mattermost.com/security-updates

ADP enrichment

CISA-ADP

No English description supplied.

No references supplied.