What is CVE-2018-0494?

CVE-2018-0494 is a medium-severity vulnerability in GNU Wget, classified under Improper Input Validation. CVSS score: 6.5/10. Published 2018-05-06.

How severe is CVE-2018-0494?

Medium severity. CVSS v3 base score is 6.5 out of 10.

Improper input validation in GNU Wget

CVE-2018-0494

GNU Wget before 1.19.5 is prone to a cookie injection vulnerability in the resp_new function in http.c via a \r\n sequence in a continuation line.

Vulnerability class: Drupalgeddon 2 (CVE-2018-7600)

Published 2018-05-06 · last modified 2026-06-17.

CVSS v3 metric

CVSS v3 base score 6.5 (Medium). Vector: CVSS:3.0/AV:N/AC:L/PR:N/UI:R/S:U/C:N/I:H/A:N.

EPSS exploit prediction

EPSS: 0.165 (97.0th percentile), scored 2026-11-01.

Moderate probability of exploitation in the next 30 days — watch for active exploitation reports. 97th percentile — 97.0% of CVEs in the catalogue have a lower EPSS than this one. How to read EPSS.

EPSS over last 30 days · oldest: 0.168 · newest: 0.165 · change: -0.003

Affected products

GNU Wget
Canonical Ubuntu Linux — versions 12.04, 14.04, 16.04
Debian Linux — versions 7.0, 8.0, 9.0
Red Hat Enterprise Linux Desktop — versions 7.0
Red Hat Enterprise Linux Server — versions 7.0
Red Hat Enterprise Linux Workstation — versions 7.0
Wget — versions WGet

Weakness classification (CWE)

CWE-20 — Improper Input Validation

References

sintonen.fi/advisories/gnu-wget-cookie-injection.txt (Exploit, Third Party Advisory)
access.redhat.com/errata/RHSA-2018:3052 (vendor-advisory, Third Party Advisory)
savannah.gnu.org/bugs/ (Broken Link)
git.savannah.gnu.org/cgit/wget.git/commit/ (Third Party Advisory)
security.gentoo.org/glsa/201806-01 (vendor-advisory, Third Party Advisory)
www.debian.org/security/2018/dsa-4195 (vendor-advisory, Third Party Advisory)
www.securityfocus.com/bid/104129 (VDB Entry, Third Party Advisory, vdb-entry)
www.securitytracker.com/id/1040838 (VDB Entry, Third Party Advisory, vdb-entry)
www.exploit-db.com/exploits/44601/ (Exploit, VDB Entry, Third Party Advisory, exploit)
usn.ubuntu.com/3643-2/ (vendor-advisory, Third Party Advisory)

Frequently asked questions

What is CVE-2018-0494?: CVE-2018-0494 is a medium-severity vulnerability in GNU Wget, classified under Improper Input Validation. CVSS score: 6.5/10. Published 2018-05-06.
How severe is CVE-2018-0494?: Medium severity. CVSS v3 base score is 6.5 out of 10.