CVE-2026-90928
Received Received - Intake

Memory Exhaustion in File Browser Subtitle Conversion

Publication date: 2026-09-14

Last updated on: 2026-09-14

Assigner: VulnCheck

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.

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Meta Information

Published
2026-09-14
Last Modified
2026-09-14
Generated
2026-09-15
AI Q&A
2026-09-14
EPSS Evaluated
N/A
NVD
CVE-2026-90928
EUVD
EUVD-2026-77446

Affected Vendors & Products

Showing 1 associated CPE
Vendor Product Version / Range
file_browser file_browser to 2.63.23 (inc)

Helpful Resources

Exploitability

CWE
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KEV
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CWE ID Description
CWE-400 The product does not properly control the allocation and maintenance of a limited resource.

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Executive Summary

CVE-2026-90928 is a memory exhaustion vulnerability in File Browser versions up to 2.63.23. It occurs in the subtitle conversion endpoint where the application loads entire subtitle files (.srt, .ass, .ssa) into memory without size limits. Authenticated attackers with download permissions can exploit this by requesting conversion of large files, causing memory exhaustion through concurrent requests and leading to denial of service.

Detection Guidance

Monitor for unusually high memory usage on the File Browser server, particularly during subtitle conversion requests. Check for processes consuming excessive memory or frequent crashes. Review logs for repeated requests to subtitle conversion endpoints with large files.

Impact Analysis

This vulnerability can cause server crashes due to memory exhaustion, disrupting service availability for all users. If you manage a File Browser instance, attackers could exploit it to take your server offline by repeatedly requesting large subtitle conversions. It requires an authenticated user with download permissions, so unauthorized access is not needed.

Compliance Impact

This vulnerability primarily causes denial of service by exhausting server memory, which could lead to service unavailability. While it does not directly impact data confidentiality or integrity, prolonged downtime may interfere with compliance requirements for data accessibility and timely processing under standards like GDPR or HIPAA.

Mitigation Strategies
  • Restrict download permissions to only necessary users to limit access to the subtitle conversion endpoint.
  • Implement memory limits on the server to prevent excessive resource consumption during subtitle processing.
  • Rate-limit requests to the subtitle conversion endpoint to reduce the impact of concurrent attacks.
  • Block or monitor large subtitle file uploads, especially .srt, .ass, or .ssa files exceeding reasonable sizes.

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