CVE-2025-54463: Mattermost Confluence Plugin has Improper Check for Unusual or Exceptional Conditions

August 11, 2025 (updated September 24, 2025)

Mattermost Confluence Plugin versions < 1.5.0 fails to handle unexpected request bodies, allowing attackers to crash the plugin via constant hits to the server webhook endpoint with an invalid request body.

References

github.com/advisories/GHSA-gjpm-6w34-ppvf
github.com/mattermost/mattermost-plugin-confluence
mattermost.com/security-updates
nvd.nist.gov/vuln/detail/CVE-2025-54463
pkg.go.dev/vuln/GO-2025-3866

Code Behaviors & Features

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