CVE-2025-54525: Mattermost Confluence Plugin has Improper Validation of Specified Type of Input

August 11, 2025 (updated August 12, 2025)

Mattermost Confluence Plugin versions < 1.5.0 fail to handle unexpected request bodies, allowing attackers to crash the plugin via constant hits to the create channel subscription endpoint with an invalid request body.

References

github.com/advisories/GHSA-3cg3-3mmr-w8hj
github.com/mattermost/mattermost-plugin-confluence
mattermost.com/security-updates
nvd.nist.gov/vuln/detail/CVE-2025-54525

Code Behaviors & Features

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