CVE-2025-64523Public exploitNetwork attack vector

Cross-user share deletion via unchecked ownership

Published Nov 12, 2025 · Updated Nov 12, 2025

Improper authorization in File Browser 2.45.0 and earlier allows remote authenticated users to delete other users' share links. The shareDeleteHandler in http/share.go accepts a URL-supplied share hash and calls the store deletion method without comparing the link owner to the current user's ID. Any account with share permission can remove another user's links, interrupting access to shared content without deleting the underlying files.

CVSS severity7.2
High
EPSS probability0.43%
Next 30 days · Sep 16, 2026
Known exploitationUnconfirmed
Based on sourced intelligence
Hinoki checkNot available
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Summary

What happened

Improper authorization in File Browser 2.45.0 and earlier allows remote authenticated users to delete other users' share links. The shareDeleteHandler in http/share.go accepts a URL-supplied share hash and calls the store deletion method without comparing the link owner to the current user's ID. Any account with share permission can remove another user's links, interrupting access to shared content without deleting the underlying files.

The record

CVE
CVE-2025-64523
Published
Nov 12, 2025
Updated
Nov 12, 2025
Vendor
File Browser
Product
File Browser
Classifications
CWE-285, CWE-639, T1485
Attack vector
network
Privileges
authenticated

Timeline

How it unfolded

  1. Nov 12, 2025CVE publishedPublication date reported by the CVE source.
  2. Nov 12, 2025Record 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=< 2.45.1

What conditions does exploitation require?

Attack vectornetwork
Required privilegesauthenticated

What is affected?

File Browser · File Browserversion=< 2.45.1

Published CVSS scores

7.2GitHub Security AdvisoryCVSS:4.0/AV:N/AC:L/AT:N/PR:L/UI:N/VC:L/VI:H/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.

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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-285Improper Authorization
CWE-639Authorization Bypass Through User-Controlled Key
T1485Data Destruction

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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