Medium severity · published Jul 9, 2026
CVE-2026-53987
Tag Plugin for GLPI 11 before 2.14.4 Stored Cross-Site Scripting in Kanban Badge Rendering
6.4
CVSS
0.5%
EPSS
No
On KEV
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 vector
CVSS:3.1/AV:N/AC:H/PR:H/UI:R/S:U/C:H/I:H/A:H
Attack vector
Network
Complexity
High
Privileges
High
User interaction
Required
Confidentiality
High
Integrity
High
Availability
High
Scope
Unchanged
Exploitation
Is it being used?
Exploit prediction (EPSS)0.5% · higher than 43% of CVEs
Exploited in the wildNo evidence yet
CISA KEVNot listed
Ransomware campaign useNot known
Affected products
Which versions
TA
tag · pluginsGLPI
2.6.0 before 2.14.4 · source: vendor
References
NVD
https://nvd.nist.gov/vuln/detail/CVE-2026-53987
CVE.org
https://www.cve.org/CVERecord?id=CVE-2026-53987
github.com
https://github.com/pluginsGLPI/tag
github.com
https://github.com/pluginsGLPI/tag/commit/49e6b6eb5f83bcd84139a5e5ec54c0ddd14acc90
github.com
https://github.com/pluginsGLPI/tag/releases/tag/2.14.4
github.com
https://github.com/pluginsGLPI/tag/security/advisories/GHSA-6rpj-89c7-x2mh
www.vulncheck.com
https://www.vulncheck.com/advisories/glpi-tag-plugin-stored-cross-site-scripting-in-kanban-badge-rendering