Is github.com/mattermost/mattermost-plugin-confluence affected by CVE-2025-13523?

Go github.com/mattermost/mattermost-plugin-confluence is affected in <1.7.0.

Is CVE-2025-13523 being exploited?

Not on the CISA KEV list. EPSS exploit probability is 0.2%.

medium

CVE-2025-13523

Q: Is CVE-2025-13523 being exploited?

Not on the CISA KEV list. EPSS exploit probability is 0.2%.

Go · github.com/mattermost/mattermost-plugin-confluence

Summary

Mattermost Confluence plugin doesn't properly escape user-controlled display names in HTML template rendering in github.com/mattermost/mattermost-plugin-confluence

Severity: medium
EPSS: 0.2% (p9)
Also known as: GHSA-ffx7-34p2-vm3w, GO-2026-4456
Published: 2026-02-17

References

https://github.com/advisories/GHSA-ffx7-34p2-vm3w
https://nvd.nist.gov/vuln/detail/CVE-2025-13523
https://mattermost.com/security-updates

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Sources: CISA KEV (public domain), OSV.dev & GitHub Advisory Database (CC-BY-4.0), FIRST EPSS, NVD/CWE (public domain). Served live from the Stateward advisory database.