CVE-2026-53987

Summary

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.

Affected Software

Weaknesses

• CWE-79: Improper Neutralization of Input During Web Page Generation ('Cross-site Scripting')

ADP Enrichment

CISA ADP Vulnrichment

• SSVC:
• Exploitation: none
  • Automatable: no
  • Technical Impact: total

References

• https://github.com/pluginsGLPI/tag/security/advisories/GHSA-6rpj-89c7-x2mh
• https://github.com/pluginsGLPI/tag/releases/tag/2.14.4
• https://github.com/pluginsGLPI/tag
• https://github.com/pluginsGLPI/tag/commit/49e6b6eb5f83bcd84139a5e5ec54c0ddd14acc90

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