CVE-2026-82237Public exploitNetwork attack vector

File disclosure via stale path-keyed share links

Published Aug 28, 2026 · Updated Aug 28, 2026

Improper access control in File Browser 2.63.23 and earlier allows remote attackers to read replacement files through stale public share links. The resource rename branch moves the file without deleting its path-keyed share record, and public downloads later resolve any file at that path. Exploitation requires possession of the old link and later reuse of the original path; the original password and expiry still govern access.

CVSS severity3.1
Low
EPSS probability0.17%
Next 30 days · Sep 16, 2026
Known exploitationUnconfirmed
Based on sourced intelligence
Hinoki checkNot available
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Summary

What happened

Improper access control in File Browser 2.63.23 and earlier allows remote attackers to read replacement files through stale public share links. The resource rename branch moves the file without deleting its path-keyed share record, and public downloads later resolve any file at that path. Exploitation requires possession of the old link and later reuse of the original path; the original password and expiry still govern access.

The record

CVE
CVE-2026-82237
Published
Aug 28, 2026
Updated
Aug 28, 2026
Vendor
File Browser
Product
File Browser
Classifications
CWE-459, T1190
Attack vector
network
Privileges
authenticated

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

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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 privilegesauthenticated

What is affected?

File Browser · File Browserversion=0 <=2.63.23

Published CVSS scores

3.1GitHubCVSS:3.1/AV:N/AC:H/PR:L/UI:N/S:U/C:L/I:N/A: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.

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No observations available

Sep 10, 2026Sep 16, 2026
Latest reporting daySep 16, 2026
Latest daily unique IPsUnavailable
Prior 30-day averageUnavailable
SourceShadowserver honeypots (KEV)
Vectornetwork
Privilegesauthenticated
Known exploitationUnconfirmed
Public exploitPublished

Weakness, pattern, technique

CWE-459Incomplete Cleanup
T1190Exploit Public-Facing Application

Public exploit references

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

Technologies

Your stack

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Your stack

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