What is CVE-2017-7443?

CVE-2017-7443 is a medium-severity vulnerability in Apt-Cacher-Ng Project, classified under HTTP Response Splitting. CVSS score: 6.1/10. Published 2017-04-05.

How severe is CVE-2017-7443?

Medium severity. CVSS v3 base score is 6.1 out of 10.

Vulnerability in Apt-Cacher-Ng Project

CVE-2017-7443

apt-cacher before 1.7.15 and apt-cacher-ng before 3.4 allow HTTP response splitting via encoded newline characters, related to lack of blocking for the %0[ad] regular expression.

Published 2017-04-05 · last modified 2026-06-17.

CVSS v3 metric

CVSS v3 base score 6.1 (Medium). Vector: CVSS:3.0/AV:N/AC:L/PR:N/UI:R/S:C/C:L/I:L/A:N.

EPSS exploit prediction

EPSS: 0.007 (51.9th percentile), scored 2026-10-01.

Very low probability of exploitation in the next 30 days; routine patching cadence is appropriate. 52nd percentile — 51.9% of CVEs in the catalogue have a lower EPSS than this one. How to read EPSS.

EPSS over last 30 days · oldest: 0.007 · newest: 0.007 · change: 0.000

Affected products

Weakness classification (CWE)

CWE-113 — HTTP Response Splitting

References

bugs.debian.org/cgi-bin/bugreport.cgi (Patch, Third Party Advisory)
bugs.debian.org/cgi-bin/bugreport.cgi (Patch, Third Party Advisory)

Frequently asked questions

What is CVE-2017-7443?: CVE-2017-7443 is a medium-severity vulnerability in Apt-Cacher-Ng Project, classified under HTTP Response Splitting. CVSS score: 6.1/10. Published 2017-04-05.
How severe is CVE-2017-7443?: Medium severity. CVSS v3 base score is 6.1 out of 10.