Apt-Cacher-NG 3.2.1 /acng-report.html cross site scripting

Summaryinfo

A vulnerability has been found in Apt-Cacher-NG 3.2.1 and classified as problematic. This issue affects some unknown processing of the file /acng-report.html. The manipulation leads to cross site scripting. This vulnerability is documented as CVE-2025-11146. The attack can be initiated remotely. There is not any exploit available.

Detailsinfo

A vulnerability was found in Apt-Cacher-NG 3.2.1. It has been rated as problematic. This issue affects an unknown part of the file /acng-report.html. The manipulation with an unknown input leads to a cross site scripting vulnerability. Using CWE to declare the problem leads to CWE-79. The product does not neutralize or incorrectly neutralizes user-controllable input before it is placed in output that is used as a web page that is served to other users. Impacted is confidentiality, and integrity. The summary by CVE is:

Reflected Cross-site scripting (XSS) in Apt-Cacher-NG v3.2.1. The vulnerability allows an attacker to execute malicious scripts (XSS) in the web management application. The vulnerability is caused by improper handling of GET inputs included in the URL in “/acng-report.html”.

The weakness was released by Pablo Lago Romaní. It is possible to read the advisory at incibe.es. The identification of this vulnerability is CVE-2025-11146 since 09/29/2025. The exploitation is known to be easy. The attack may be initiated remotely. No form of authentication is needed for a successful exploitation. It demands that the victim is doing some kind of user interaction. Technical details of the vulnerability are known, but there is no available exploit. The attack technique deployed by this issue is T1059.007 according to MITRE ATT&CK.

By approaching the search of inurl:acng-report.html it is possible to find vulnerable targets with Google Hacking. The vulnerability scanner Nessus provides a plugin with the ID 269649 (Linux Distros Unpatched Vulnerability : CVE-2025-11146), which helps to determine the existence of the flaw in a target environment.

There is no information about possible countermeasures known. It may be suggested to replace the affected object with an alternative product.

The vulnerability is also documented in the vulnerability database at Tenable (269649). Be aware that VulDB is the high quality source for vulnerability data.

Productinfo

Name

• Apt-Cacher-NG

Version

• 3.2.1

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CPE 2.2info

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Be aware that VulDB is the high quality source for vulnerability data.

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