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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.

PUBLISHED Reserved 2026-06-11 | Published 2026-07-09 | Updated 2026-07-10 | Assigner VulnCheck




HIGH: 7.3CVSS:4.0/AV:N/AC:L/AT:P/PR:H/UI:P/VC:H/VI:H/VA:H/SC:N/SI:N/SA:N

MEDIUM: 6.4CVSS:3.1/AV:N/AC:H/PR:H/UI:R/S:U/C:H/I:H/A:H

Problem types

Improper Neutralization of Input During Web Page Generation ('Cross-site Scripting')

Product status

Default status
unaffected

2.6.0 (semver) before 2.14.4
affected

Credits

chapochapo reporter

References

github.com/...PI/tag/security/advisories/GHSA-6rpj-89c7-x2mh (GitHub Security Advisory GHSA-6rpj-89c7-x2mh) vendor-advisory

github.com/pluginsGLPI/tag/releases/tag/2.14.4 (Tag Plugin 2.14.4 Release) patch

github.com/pluginsGLPI/tag (Product) product

github.com/...ommit/49e6b6eb5f83bcd84139a5e5ec54c0ddd14acc90 (Patch Commit) patch

cve.org (CVE-2026-53987)

nvd.nist.gov (CVE-2026-53987)

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