---
id: CVE-2026-90928
title: >-
  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
summary: >-
  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 co…
severity: medium
cvss: 6.5
cvssVector: 'CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H'
cwe:
  - CWE-400
vendor: filebrowser
product: filebrowser
affected:
  - filebrowser <= 2.63.23
published: '2026-09-14'
updated: '2026-09-24'
sourceUpdated: '2026-09-24T20:44:42.207'
source: NVD
sourceUrl: 'https://nvd.nist.gov/vuln/detail/CVE-2026-90928'
references:
  - url: >-
      https://github.com/filebrowser/filebrowser/security/advisories/GHSA-448h-jr2h-3vhp
    label: disclosure@vulncheck.com
  - url: >-
      https://www.vulncheck.com/advisories/file-browser-through-2.63.23-memory-exhaustion-via-subtitle-endpoint
    label: disclosure@vulncheck.com
  - url: >-
      https://github.com/filebrowser/filebrowser/security/advisories/GHSA-448h-jr2h-3vhp
    label: 134c704f-9b21-4f2e-91b3-4a467353bcc0
tags:
  - nvd
  - cve.org
  - exploit-available
epss: 0.00436
epssPercentile: 0.35228
exploitAvailable: true
ssvc:
  exploitation: poc
  automatable: 'no'
  technicalImpact: partial
  timestamp: '2026-09-14T14:00:30.915269Z'
ingestedAt: '2026-09-14T15:23:07.421Z'
---

## Overview

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.

## Remediation

Refer to the linked advisories for vendor-supplied fixes and affected version ranges.