Vulnerability Details CVE-2026-30934
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.
Exploit prediction scoring system (EPSS) score
EPSS Score 0.0
EPSS Ranking 11.2%
CVSS Severity
CVSS v3 Score 8.9
References
Products affected by CVE-2026-30934
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cpe:2.3:a:filebrowser:filebrowser:1.0.0
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cpe:2.3:a:filebrowser:filebrowser:1.0.1
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cpe:2.3:a:filebrowser:filebrowser:1.0.2
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cpe:2.3:a:filebrowser:filebrowser:1.1.0
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cpe:2.3:a:filebrowser:filebrowser:1.1.1
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cpe:2.3:a:filebrowser:filebrowser:1.2.0
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cpe:2.3:a:filebrowser:filebrowser:1.2.1
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cpe:2.3:a:filebrowser:filebrowser:1.2.2
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cpe:2.3:a:filebrowser:filebrowser:1.2.3
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cpe:2.3:a:filebrowser:filebrowser:1.2.4
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cpe:2.3:a:filebrowser:filebrowser:1.2.5
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cpe:2.3:a:filebrowser:filebrowser:1.2.6
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cpe:2.3:a:filebrowser:filebrowser:1.2.7
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cpe:2.3:a:filebrowser:filebrowser:1.2.8
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cpe:2.3:a:filebrowser:filebrowser:1.2.9
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cpe:2.3:a:filebrowser:filebrowser:1.3.0