XSS in Pluginsglpi Glpi 11
CVE-2026-53987
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.
Vulnerability class: XSS (Cross-Site Scripting)
Published · last modified .
CVSS v3 metric
CVSS v3 base score 6.4 (Medium). Vector: CVSS:3.1/AV:N/AC:H/PR:H/UI:R/S:U/C:H/I:H/A:H.
EPSS exploit prediction
EPSS: 0.005 (41.1th percentile), scored .
Very low probability of exploitation in the next 30 days; routine patching cadence is appropriate. 41st percentile — 41.1% of CVEs in the catalogue have a lower EPSS than this one. How to read EPSS.
EPSS over last 30 days · oldest: 0.005 · newest: 0.005 · change: 0.000
Affected products
- Pluginsglpi Glpi 11 — versions 2.6.0
- Tag Plugin Glpi 11 — versions 2.6.0
Weakness classification (CWE)
References
- github.com/pluginsGLPI/tag/security/advisories/GHSA-6rpj-89c7-x2mh (vendor-advisory)
- github.com/pluginsGLPI/tag/releases/tag/2.14.4 (patch)
- github.com/pluginsGLPI/tag (product)
- github.com/pluginsGLPI/tag/commit/49e6b6eb5f83bcd84139a5e5ec54c0ddd14acc90 (patch)
- www.vulncheck.com/advisories/glpi-tag-plugin-stored-cross-site-scripting-in-kan… (third-party-advisory)
Frequently asked questions
- What is CVE-2026-53987?
- CVE-2026-53987 is a medium-severity vulnerability in Pluginsglpi Glpi 11, classified under Cross-site Scripting. CVSS score: 6.4/10. Published 2026-07-09.
- How severe is CVE-2026-53987?
- Medium severity. CVSS v3 base score is 6.4 out of 10.