CVE-2025-13646Network attack vector

Authenticated arbitrary file upload via ZIP extraction race

Published Dec 3, 2025 · Updated Dec 3, 2025

Arbitrary file upload in WPChill Modula Image Gallery 2.13.1 through 2.13.2 allows remote authenticated users to write server files via ZIP import. The ajax_unzip_file handler extracts archive contents before enforcing allowed file types, leaving dangerous files reachable during a race window. Author-level access is required; winning the race permits execution of uploaded PHP in the web server context.

CVSS severity7.5
High
EPSS probability0.75%
Next 30 days · Sep 16, 2026
Known exploitationUnconfirmed
Based on sourced intelligence
Hinoki checkNot available
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Summary

What happened

Arbitrary file upload in WPChill Modula Image Gallery 2.13.1 through 2.13.2 allows remote authenticated users to write server files via ZIP import. The ajax_unzip_file handler extracts archive contents before enforcing allowed file types, leaving dangerous files reachable during a race window. Author-level access is required; winning the race permits execution of uploaded PHP in the web server context.

The record

CVE
CVE-2025-13646
Published
Dec 3, 2025
Updated
Dec 3, 2025
Vendor
WPChill
Product
Modula Image Gallery
Classifications
CWE-434, T1190
Attack vector
network
Privileges
authenticated

Timeline

How it unfolded

  1. Dec 3, 2025CVE publishedPublication date reported by the CVE source.
  2. Dec 3, 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=2.13.1 <=2.13.2

What conditions does exploitation require?

Attack vectornetwork
Required privilegesauthenticated

What is affected?

WPChill · Modula Image Galleryversion=2.13.1 <=2.13.2

Published CVSS scores

7.5GitHub Advisory DatabaseCVSS:3.1/AV:N/AC:H/PR:L/UI:N/S:U/C:H/I:H/A:H

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 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 exploitUnconfirmed

Weakness, pattern, technique

CWE-434Unrestricted Upload of File with Dangerous Type
T1190Exploit Public-Facing Application

Public exploit references

No public exploit references are available in this record.

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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