🛡️ CVE-2026-53987

🟡 CVSS 6.4 — Medium ✅ No Known Exploit CWE-79 NVD
6.4
CVSS Score
0 Low4 Medium7 High9 Critical10

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.

How this vulnerability can be exploited

This issue can be reached over the network, attack complexity is high, an attacker needs administrative privileges on the target. A user must be tricked into taking some action. The scope is unchanged, so the impact stays within the vulnerable component. Rated impact: confidentiality high, integrity high, availability high.

Weakness class

CVE-2026-53987 is classified as CWE-79: Cross-site Scripting (XSS). User-supplied data is written into a page without escaping, so attacker script runs in the browser of anyone who views it.

Affected software

CVE-2026-53987 is recorded against 1 package.

  • unknown

Timeline and source

Published on 9 July 2026 and last revised on 20 July 2026. No public exploit is currently recorded for this entry. Record sourced from NVD.

References

github.com
github.com
github.com
github.com
www.vulncheck.com

Details

Severity MEDIUM
CVSS Score 6.4
CVSS Vector CVSS:3.1/AV:N/AC:H/PR:H/UI:R/S:U/C:H/I:H/A:H
CWE CWE-79
Public Exploit ✅ No
Source NVD
Published 2026-07-09
Updated 2026-08-11
Modified 2026-07-20
Fix URL N/A

Affected Packages

Software From version Fixed in
unknown — —

Similar Threats

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