CVE-2026-53987

high

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.

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/commit/49e6b6eb5f83bcd84139a5e5ec54c0ddd14acc90

https://github.com/pluginsGLPI/tag

Details

Source: Mitre, NVD

Published: 2026-07-09

Updated: 2026-07-09

Risk Information

CVSS v2

Base Score: 6.8

Vector: CVSS2#AV:N/AC:H/Au:M/C:C/I:C/A:C

Severity: Medium

CVSS v3

Base Score: 6.4

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

Severity: Medium

CVSS v4

Base Score: 7.3

Vector: 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

Severity: High