Auth bypass in Filebrowser
CVE-2026-30933
FileBrowser Quantum is a free, self-hosted, web-based file manager. Prior to 1.3.1-beta and 1.2.2-stable, the remediation for CVE-2026-27611 is incomplete. Password protected shares still disclose tokenized downloadURL via /public/api/share/info. This vulnerability is fixed in 1.3.1-beta and 1.2.2-stable.
Vulnerability class: Information Disclosure
Published · last modified .
CVSS v3 metric
CVSS v3 base score 7.5 (High). Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:N.
EPSS exploit prediction
EPSS: 0.005 (44.9th percentile), scored .
Very low probability of exploitation in the next 30 days; routine patching cadence is appropriate. 45th percentile — 44.9% of CVEs in the catalogue have a lower EPSS than this one. How to read EPSS.
EPSS over last 30 days · oldest: 0.005 · newest: 0.005 · change: 0.000
Affected products
- Filebrowser — versions 1.2.1, 1.3.0
- Gtsteffaniak Filebrowser — versions >= 1.3.0-beta, < 1.3.1-beta, >= 1.2.6-beta, < 1.2.2-stable, = 1.1.3-stable
Weakness classification (CWE)
References
- github.com/gtsteffaniak/filebrowser/security/advisories/GHSA-525j-95gf-766f (Exploit, Vendor Advisory)
- github.com/gtsteffaniak/filebrowser/releases/tag/v1.2.2-stable (Release Notes)
- github.com/gtsteffaniak/filebrowser/releases/tag/v1.3.1-beta (Release Notes)
Frequently asked questions
- What is CVE-2026-30933?
- CVE-2026-30933 is a high-severity vulnerability in Filebrowser, classified under Information Disclosure. CVSS score: 7.5/10. Published 2026-03-10.
- How severe is CVE-2026-30933?
- High severity. CVSS v3 base score is 7.5 out of 10.