CVE-2026-82235Public exploitNetwork attack vector

Service interruption via blocking named-pipe opens

Published Aug 28, 2026 · Updated Aug 28, 2026

Resource exhaustion in File Browser 2.63.23 and earlier allows remote attackers to interrupt service through crafted downloads. The archive walker and public download handler open FIFOs without checking their file type, leaving open(2) blocked and pinning a goroutine and connection. Exploitation requires a named pipe already in the served tree plus download access or a public share link; repeated requests exhaust service resources.

CVSS severity8.2
High
EPSS probability0.39%
Next 30 days · Sep 16, 2026
Known exploitationUnconfirmed
Based on sourced intelligence
Hinoki checkNot available
Coverage for this vulnerability

See if you're affected

Explore vulnerability checks for your environment with Hinoki.

Book a demo

Summary

What happened

Resource exhaustion in File Browser 2.63.23 and earlier allows remote attackers to interrupt service through crafted downloads. The archive walker and public download handler open FIFOs without checking their file type, leaving open(2) blocked and pinning a goroutine and connection. Exploitation requires a named pipe already in the served tree plus download access or a public share link; repeated requests exhaust service resources.

The record

CVE
CVE-2026-82235
Published
Aug 28, 2026
Updated
Aug 28, 2026
Vendor
File Browser
Product
File Browser
Classifications
CWE-400, T1499.004
Attack vector
network
Privileges
unauthenticated

Timeline

How it unfolded

  1. Aug 28, 2026CVE publishedPublication date reported by the CVE source.
  2. Aug 28, 2026Record updatedLatest update available in the CVE record.

Exploitability

Present is not the same as exploitable

Compare your product and version with the public record. A matching version still requires validation against your environment.

Is a vulnerable build present?

Compare these published version ranges with your installed build and any vendor patches.

  1. Affected versionversion=0 <=2.63.23

What conditions does exploitation require?

Attack vectornetwork
Required privilegesunauthenticated

What is affected?

File Browser · File Browserversion=0 <=2.63.23

Published CVSS scores

5.9VulnCheck CNACVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:N/I:N/A:H
8.2VulnCheck CNACVSS:4.0/AV:N/AC:H/AT:P/PR:N/UI:N/VC:N/VI:N/VA:H/SC:N/SI:N/SA:N

CVSS describes severity. EPSS estimates exploitation probability.

Attacks

What attackers are doing with it

Daily unique IPs observed by Shadowserver honeypots for known exploited vulnerabilities (KEVs). Missing observations do not establish an absence of attacks.

Daily unique IPsNo honeypot observations are available for this CVE in the selected window.

No observations available

Sep 9, 2026Sep 15, 2026
Latest reporting daySep 15, 2026
Latest daily unique IPsUnavailable
Prior 30-day averageUnavailable
SourceShadowserver honeypots (KEV)
Vectornetwork
Privilegesunauthenticated
Known exploitationUnconfirmed
Public exploitPublished

Weakness, pattern, technique

CWE-400Uncontrolled Resource Consumption
T1499.004Application or System Exploitation

Public exploit references

Labels summarize the accepted research assessment. They do not indicate a test against your environment.

Technologies

Your stack

See the directory against your own environment.

Your stack

Check the software in your environment

Book a demo to see how Hinoki identifies affected software and validates exploitability in your environment.

Book a demo