Resource exhaustion in Filebrowser
CVE-2026-90928
File Browser through 2.63.23 contains a memory exhaustion vulnerability in the subtitle conversion endpoint that loads entire subtitle files into memory without size limits. Authenticated attackers with download permission can request conversion of large .srt, .ass, or .ssa files and exhaust server memory through concurrent requests, causing denial of service.
Vulnerability class: DoS (Denial of Service)
Published · last modified .
CVSS v3 metric
CVSS v3 base score 6.5 (Medium). Vector: CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H.
EPSS exploit prediction
EPSS: 0.004 (37.8th percentile), scored .
Very low probability of exploitation in the next 30 days; routine patching cadence is appropriate. 38th percentile — 37.8% of CVEs in the catalogue have a lower EPSS than this one. How to read EPSS.
EPSS over last 30 days · oldest: 0.004 · newest: 0.004 · change: 0.000
Affected products
Weakness classification (CWE)
References
- github.com/filebrowser/filebrowser/security/advisories/GHSA-448h-jr2h-3vhp (vendor-advisory)
- www.vulncheck.com/advisories/file-browser-through-2.63.23-memory-exhaustion-via… (third-party-advisory)
Frequently asked questions
- What is CVE-2026-90928?
- CVE-2026-90928 is a medium-severity vulnerability in Filebrowser, classified under Uncontrolled Resource Consumption. CVSS score: 6.5/10. Published 2026-09-14.
- How severe is CVE-2026-90928?
- Medium severity. CVSS v3 base score is 6.5 out of 10.