Mattermost Confluence Plugin has Improper Check for Unusual or Exceptional Conditions

MEDIUM 5.9CVE-2025-53514 · GHSA-w92j-c6gr-hj8r · GO-2025-3871 · Published 11/08/2025 · updated 17/06/2026

In short

CVE-2025-53514 is a MEDIUM (CVSS 5.9) vulnerability affecting github.com/mattermost/mattermost-plugin-confluence, confluence (mattermost).
Chance of exploitation in the next 30 days (EPSS): 0.31%, higher than 24.1% of all vulnerabilities.
Fix: update to 1.5.0 or later.

Package	Affected versions	Patched versions
github.com/mattermost/mattermost-plugin-confluence Go	`< 1.5.0`	`1.5.0`
confluence mattermost	`< 1.5.0`	`1.5.0`

Description

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

NVD description

Mattermost Confluence Plugin version <1.5.0 fails to handle unexpected request body which allows attackers to crash the plugin via constant hit to server webhook endpoint with an invalid request body.

References

nvd.nist.gov/vuln/detail/CVE-2025-53514 · ADVISORY
mattermost/mattermost-plugin-confluence · PACKAGE
mattermost.com/security-updates · WEB
GitHub Advisory GHSA-w92j-c6gr-hj8r · ADVISORY

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Package

Affected versions

Patched versions

github.com/mattermost/mattermost-plugin-confluence

< 1.5.0

1.5.0

confluence

mattermost

< 1.5.0

1.5.0

Description

NVD description

More vulnerabilities in github.com/mattermost/mattermost-plugin-confluence

See all →