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Vulnerability record · CVE-2026-53987 · published 9 July 2026

CVE-2026-53987: Cross-site scripting vulnerability

The Tag plugin for GLPI 11 before 2.14.4 stores the tag name without HTML sanitization and renders it into the Kanban badge markup via PluginTagTag::preKanbanContent() without output escaping, resulting in stored cross-site scripting. An authenticated user with TAG MANAGEMENT create or update rights can set a tag name containing HTML, which then executes in the browser of any user who opens the Kanban view of a ticket, problem, change, or project the tag is attached to.

7.3 CVSS 4.0 High EPSS 0.50% · top 59.4% CWE-79 · Cross-site scripting Deferred
7.3CVSS 4.0 base score
0.50%EPSS exploitation probability, 30 days
NoNot in CISA KEV
0Affected product versions listed by NVD
5References
20 Jul 2026Last modified by NVD

Description

The Tag plugin for GLPI 11 before 2.14.4 stores the tag name without HTML sanitization and renders it into the Kanban badge markup via PluginTagTag::preKanbanContent() without output escaping, resulting in stored cross-site scripting. An authenticated user with TAG MANAGEMENT create or update rights can set a tag name containing HTML, which then executes in the browser of any user who opens the Kanban view of a ticket, problem, change, or project the tag is attached to.

CVSS:4.0/AV:N/AC:L/AT:P/PR:H/UI:P/VC:H/VI:H/VA:H/SC:N/SI:N/SA:N/E:X/CR:X/IR:X/AR:X/MAV:X/MAC:X/MAT:X/MPR:X/MUI:X/MVC:X/MVI:X/MVA:X/MSC:X/MSI:X/MSA:X/S:X/AU:X/R:

References

LinkTags
https://github.com/pluginsGLPI/tag
https://github.com/pluginsGLPI/tag/commit/49e6b6eb5f83bcd84139a5e5ec54c0ddd14acc90
https://github.com/pluginsGLPI/tag/releases/tag/2.14.4
https://github.com/pluginsGLPI/tag/security/advisories/GHSA-6rpj-89c7-x2mh
https://www.vulncheck.com/advisories/glpi-tag-plugin-stored-cross-site-scripting-in-kanban-badge-rendering

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Source: NIST National Vulnerability Database (record CVE-2026-53987), CISA KEV, FIRST EPSS (scores of 2026-09-26). This page is refreshed as NVD updates the record.