CVE-2026-35604Public exploitNetwork attack vector

Unauthenticated file access via stale share authorization

Published Apr 7, 2026 · Updated Apr 7, 2026

Incorrect authorization in File Browser before 2.63.1 allows remote attackers to download files through previously created public share links. The withHashFile public-share handler loads the share and its owner but fails to verify the owner's current Share and Download permissions. Exposure requires an existing link whose owner's permissions were later revoked, and it permits continued reading of the linked content.

CVSS severity8.2
High
EPSS probability0.33%
Next 30 days · Sep 16, 2026
Known exploitationUnconfirmed
Based on sourced intelligence
Hinoki checkNot available
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Summary

What happened

Incorrect authorization in File Browser before 2.63.1 allows remote attackers to download files through previously created public share links. The withHashFile public-share handler loads the share and its owner but fails to verify the owner's current Share and Download permissions. Exposure requires an existing link whose owner's permissions were later revoked, and it permits continued reading of the linked content.

The record

CVE
CVE-2026-35604
Published
Apr 7, 2026
Updated
Apr 7, 2026
Vendor
File Browser Contributors
Product
File Browser
Classifications
CWE-863, T1190
Attack vector
network
Privileges
unauthenticated

Timeline

How it unfolded

  1. Apr 7, 2026CVE publishedPublication date reported by the CVE source.
  2. Apr 7, 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=< 2.63.1

What conditions does exploitation require?

Attack vectornetwork
Required privilegesunauthenticated

What is affected?

File Browser Contributors · File Browserversion=< 2.63.1

Published CVSS scores

8.2GitHub, Inc.CVSS:4.0/AV:N/AC:L/AT:P/PR:N/UI:N/VC:H/VI:N/VA:N/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.

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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
Privilegesunauthenticated
Known exploitationUnconfirmed
Public exploitPublished

Weakness, pattern, technique

CWE-863Incorrect Authorization
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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