CVE-2026-82235
Received Received - Intake

Filebrowser Named Pipe Resource Exhaustion Vulnerability

Publication date: 2026-08-28

Last updated on: 2026-08-28

Assigner: VulnCheck

Description
filebrowser through 2.63.23 fails to validate named pipes in directory archive and public download handlers, allowing attackers to trigger blocking open syscalls. Authenticated users or anonymous visitors with public share links can repeatedly request archives containing named pipes to pin server goroutines and exhaust connection resources.

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Meta Information

Published
2026-08-28
Last Modified
2026-08-28
Generated
2026-08-28
AI Q&A
2026-08-28
EPSS Evaluated
N/A
NVD
CVE-2026-82235
EUVD
EUVD-2026-67687

Affected Vendors & Products

Showing 1 associated CPE
Vendor Product Version / Range
filebrowser filebrowser 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

filebrowser through version 2.63.23 fails to validate named pipes in directory archives and public download handlers. This allows attackers to trigger blocking open syscalls. Authenticated users or anonymous visitors with public share links can repeatedly request archives containing named pipes to pin server goroutines and exhaust connection resources.

Detection Guidance

Detecting this vulnerability requires monitoring for repeated requests to archives containing named pipes. Check server logs for excessive archive download requests or blocking syscalls. Use tools like netstat or ss to monitor connection exhaustion. Inspect filebrowser logs for goroutine pinning events.

Impact Analysis

This vulnerability can lead to denial of service by consuming server resources. Attackers may cause the server to hang or become unresponsive by repeatedly exploiting named pipes in archives, affecting availability for all users.

Mitigation Strategies

Upgrade filebrowser to a version that validates named pipes in archives. Implement rate limiting on archive downloads. Disable public share links if not required. Monitor server resources for connection exhaustion.

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