What is CVE-2026-61874?

CVE-2026-61874 is a low-severity vulnerability in Filebrowser, classified under Incorrect Authorization. CVSS score: 3.1/10. Published 2026-07-12.

How severe is CVE-2026-61874?

Low severity. CVSS v3 base score is 3.1 out of 10.

Auth bypass in Filebrowser

CVE-2026-61874

filebrowser versions before 2.63.17 fail to normalize paths before querying the share index in DeleteWithPathPrefix, allowing authenticated users to leave stale public shares behind. Attackers can delete a shared directory using a trailing-slash path, then recreate the same directory to expose new contents through the dormant public share URL.

Vulnerability class: Broken Access Control

Published 2026-07-12 · last modified 2026-07-13.

CVSS v3 metric

CVSS v3 base score 3.1 (Low). Vector: CVSS:3.1/AV:N/AC:H/PR:L/UI:N/S:U/C:L/I:N/A:N.

EPSS exploit prediction

EPSS: 0.003 (22.5th percentile), scored 2026-10-12.

Very low probability of exploitation in the next 30 days; routine patching cadence is appropriate. 23rd percentile — 22.5% of CVEs in the catalogue have a lower EPSS than this one. How to read EPSS.

EPSS over last 30 days · oldest: 0.003 · newest: 0.003 · change: 0.000

Affected products

Filebrowser — versions 0, 2.63.17

Weakness classification (CWE)

CWE-863 — Incorrect Authorization

References

github.com/filebrowser/filebrowser/commit/be23ab3a15bf957928ecfed88de5ab67850c1… (patch)
github.com/filebrowser/filebrowser/security/advisories/GHSA-pp88-jhwj-5qh5 (vendor-advisory)
www.vulncheck.com/advisories/filebrowser-before-stale-public-share-via-trailing… (third-party-advisory)

Frequently asked questions

What is CVE-2026-61874?: CVE-2026-61874 is a low-severity vulnerability in Filebrowser, classified under Incorrect Authorization. CVSS score: 3.1/10. Published 2026-07-12.
How severe is CVE-2026-61874?: Low severity. CVSS v3 base score is 3.1 out of 10.