GO-2026-4456 — Vulnetix

GO-2026-4456 PUBLISHED

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

Affected Products

Vendor	Product	Versions
github.com	mattermost/mattermost-plugin-confluence	0, 0

Timeline

Feb 17, 2026 CVE Published
Feb 19, 2026 CVE Updated
May 1, 2026 Security Advisory

References

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

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