What is CVE-2025-11147?

CVE-2025-11147 is a medium-severity vulnerability in Apt-Cacher-Ng, classified under Cross-site Scripting. CVSS score: 5.4/10. Published 2025-09-29.

How severe is CVE-2025-11147?

Medium severity. CVSS v3 base score is 5.4 out of 10.

XSS in Apt-Cacher-Ng

CVE-2025-11147

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”.

Vulnerability class: XSS (Cross-Site Scripting)

EPSS: 0.002 (6.0th percentile) — read the EPSS interpretation.

CVSS v3 metric

CVSS v3 base score 5.4 (Medium). Vector: CVSS:3.1/AV:N/AC:L/PR:L/UI:R/S:C/C:L/I:L/A:N.

Affected products

Apt-cacher-ng — versions 3.2.1
Apt-cacher-ng_project Apt-cacher-ng — versions 3.2-1

Weakness classification (CWE)

CWE-79 — Cross-site Scripting

References

cve-coordination@incibe.es (Third Party Advisory)

Frequently asked questions

What is CVE-2025-11147?: CVE-2025-11147 is a medium-severity vulnerability in Apt-Cacher-Ng, classified under Cross-site Scripting. CVSS score: 5.4/10. Published 2025-09-29.
How severe is CVE-2025-11147?: Medium severity. CVSS v3 base score is 5.4 out of 10.