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.
{
"cna_assigner": "VulnCheck",
"cwe_ids": [
"CWE-79"
],
"osv_generated_from": "https://github.com/CVEProject/cvelistV5/tree/main/cves/2026/53xxx/CVE-2026-53987.json"
}{
"extracted_events": [
{
"range": [
{
"introduced": "2.6.0"
},
{
"fixed": "2.14.4"
}
],
"source": "AFFECTED_FIELD",
"strategy": "StandardRange"
},
{
"original_tag": "2.14.4",
"range": [
{
"fixed": "49e6b6eb5f83bcd84139a5e5ec54c0ddd14acc90"
}
],
"source": "REFERENCES_TAG"
},
{
"range": [
{
"fixed": "49e6b6eb5f83bcd84139a5e5ec54c0ddd14acc90"
}
],
"source": "REFERENCES_COMMIT"
},
{
"range": [
{
"introduced": "11"
},
{
"fixed": "2.14.4"
}
],
"source": "DESCRIPTION"
}
]
}