CVE-2025-11147 Reflected Cross-site scripting (XSS) vulnerability in Apt-Cacher-NG
Reflected XSS in Apt-Cacher-NG allows attackers to execute malicious scripts in the browser of users accessing specific HTML files.
- Exploited in the wild
- Not known
- Login needed
- Not needed
- Attackable
- Over the internet
- Victim action needed
- A user has to click or open something
- Fix
- None listed
What is CVE-2025-11147?
CVE-2025-11147 is a medium-severity cross-site scripting vulnerability in Apt-Cacher-NG, published on 29 Sep 2025. An attacker can exploit it over the internet without logging in, and only if a user opens a file or follows a link.
Official description
Reflected cross-site scripting (XSS) in Apt-Cacher-NG v3.2.1. The vulnerability allows malicious scripts (XSS) to be executed in “/html/<filename>.html”.
Weakness: CWE-79
Which versions are affected by CVE-2025-11147?
It affects 1 product.
Products include Apt-Cacher-Ng Project Apt-Cacher-Ng.
How do I fix CVE-2025-11147?
No fix has been published for CVE-2025-11147 yet. Limit exposure of the affected software until one is available.
Escape output for the context it lands in and set a strict Content Security Policy. Upgrading the affected component is the real fix. More about Cross-site scripting.
Is CVE-2025-11147 being exploited?
There is no known exploitation of CVE-2025-11147 in the wild and no public exploit code.
Other vulnerabilities in Apt-Cacher-NG
Sources
Also known as DEBIAN-CVE-2025-11147, GHSA-c3mh-jph2-cvxh, UBUNTU-CVE-2025-11147.