CVE-2025-52901Public exploit

Account hijacking via session tokens in URLs

Published Jun 30, 2025 · Updated Aug 4, 2025

Sensitive data exposure in File Browser before 2.33.9 allows attackers with URL access to hijack user sessions and read files. The frontend appends the session JWT as the auth query parameter when opening raw-file downloads and command WebSockets, placing it in browser history, server and proxy logs, and referrer headers. Access to any such URL record is required; the stolen token grants the affected user's account access and exposes every file available to that account.

CVSS severity4.5
Medium
EPSS probability0.53%
Next 30 days · Sep 16, 2026
Known exploitationUnconfirmed
Based on sourced intelligence
Hinoki checkNot available
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Summary

What happened

Sensitive data exposure in File Browser before 2.33.9 allows attackers with URL access to hijack user sessions and read files. The frontend appends the session JWT as the auth query parameter when opening raw-file downloads and command WebSockets, placing it in browser history, server and proxy logs, and referrer headers. Access to any such URL record is required; the stolen token grants the affected user's account access and exposes every file available to that account.

The record

CVE
CVE-2025-52901
Published
Jun 30, 2025
Updated
Aug 4, 2025
Vendor
File Browser
Product
File Browser
Classifications
CWE-598, T1550.004
Attack vector
adjacent
Privileges
Unavailable

Timeline

How it unfolded

  1. Jun 30, 2025CVE publishedPublication date reported by the CVE source.
  2. Aug 4, 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=< 2.33.9

What conditions does exploitation require?

Attack vectoradjacent
Required privilegesUnavailable in this record.

What is affected?

File Browser · File Browserversion=< 2.33.9

Published CVSS scores

4.5GitHubCVSS:3.1/AV:A/AC:L/PR:H/UI:N/S:U/C:H/I:N/A:N
6.5NISTCVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/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)
Vectoradjacent
PrivilegesUnavailable
Known exploitationUnconfirmed
Public exploitPublished

Weakness, pattern, technique

CWE-598Use of GET Request Method With Sensitive Query Strings
T1550.004Use Alternate Authentication Material: Web Session Cookie

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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