CVE-2026-13417 | Mattermost up to 10.11.22/11.7.7/11.8.4/11.9.0 Boards fields.properties input validation

September 14, 2026 Yanac

A vulnerability identified as problematic has been detected in Mattermost up to 10.11.22/11.7.7/11.8.4/11.9.0. This issue affects some unknown processing of the component Boards. The manipulation of the argument fields.properties leads to improper input validation.

This vulnerability is uniquely identified as CVE-2026-13417. The attack is possible to be carried out remotely. No exploit exists.

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