Medium severity · published Sep 14, 2026
CVE-2026-90928
File Browser through 2.63.23 Memory Exhaustion via subtitle endpoint
6.5
CVSS
0.4%
EPSS
No
On KEV
Description
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.
CVSS vector
CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H
Attack vector
Network
Complexity
Low
Privileges
Low
User interaction
None
Confidentiality
None
Integrity
None
Availability
High
Scope
Unchanged
Exploitation
Is it being used?
Exploit prediction (EPSS)0.4% · higher than 38% of CVEs
Exploited in the wildNo evidence yet
CISA KEVNot listed
Ransomware campaign useNot known
Affected products
Which versions
FI
filebrowser · filebrowser
through 2.63.23 · source: vendor
References
NVD
https://nvd.nist.gov/vuln/detail/CVE-2026-90928
CVE.org
https://www.cve.org/CVERecord?id=CVE-2026-90928
github.com
https://github.com/filebrowser/filebrowser/security/advisories/GHSA-448h-jr2h-3vhp
www.vulncheck.com
https://www.vulncheck.com/advisories/file-browser-through-2.63.23-memory-exhaustion-via-subtitle-endpoint
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