FileBrowser Quantum is a free, self-hosted, web-based file manager. Prior to 1.3.1-beta and 1.2.2-stable, Stored XSS is possible via share metadata fields (e.g., title, description) that are rendered into HTML for /public/share/<hash> without context-aware escaping. The server uses text/template instead of html/template, allowing injected scripts to execute when victims visit the share URL. This vulnerability is fixed in 1.3.1-beta and 1.2.2-stable.
{
"osv_generated_from": "https://github.com/CVEProject/cvelistV5/tree/main/cves/2026/30xxx/CVE-2026-30934.json",
"cna_assigner": "GitHub_M",
"cwe_ids": [
"CWE-79"
]
}{
"cpe": [
"cpe:2.3:a:filebrowser:filebrowser:*:*:*:*:*:*:*:*",
"cpe:2.3:a:filebrowser:filebrowser:1.2.1:stable:*:*:*:*:*:*"
],
"source": [
"CPE_RANGE",
"CPE_STRING"
],
"extracted_events": [
{
"introduced": "0"
},
{
"last_affected": "1.2.9"
},
{
"introduced": "1.2.1-stable"
},
{
"last_affected": "1.2.1-stable"
}
]
}{
"extracted_events": [
{
"introduced": "1.3.0-beta"
},
{
"fixed": "1.3.1-beta"
},
{
"introduced": "0"
},
{
"fixed": "1.2.2-stable"
}
],
"source": [
"AFFECTED_FIELD",
"REFERENCES"
]
}