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)
EPSS: 0.003 (27.3th percentile) — read the EPSS interpretation.
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.
Affected products
- Pluginsglpi Glpi 11 — versions 2.6.0
- Tag Plugin Glpi 11 — versions 2.6.0
Weakness classification (CWE)
References
- disclosure@vulncheck.com (vendor-advisory)
- disclosure@vulncheck.com (patch)
- disclosure@vulncheck.com (product)
- disclosure@vulncheck.com (patch)
- disclosure@vulncheck.com (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.