CVE-2019-18860

moderate-risk
Published 2020-03-20

Squid before 4.9, when certain web browsers are used, mishandles HTML in the host (aka hostname) parameter to cachemgr.cgi.

Do I need to act?

~
4.3% chance of exploitation in next 30 days
EPSS score — moderate exploit probability
-
Not on CISA KEV list
No confirmed active exploitation reported to CISA
?
Patch status unknown
Check vendor advisories for fix availability and mitigation guidance
6
CVSS 6.1/10 Medium
NETWORK / LOW complexity

Affected Products (8)

Affected Vendors

Debian Canonical Squid-Cache Opensuse

References (15)

Mailing List http://lists.opensuse.org/opensuse-security-announce/2020-05/msg00018.html
Patch https://github.com/squid-cache/squid/pull/504
Patch https://github.com/squid-cache/squid/pull/505
Mailing List https://lists.debian.org/debian-lts-announce/2020/07/msg00009.html
Third Party Advisory https://usn.ubuntu.com/4356-1/
Third Party Advisory https://www.debian.org/security/2020/dsa-4732
Mailing List http://lists.opensuse.org/opensuse-security-announce/2020-05/msg00018.html
http://www.openwall.com/lists/oss-security/2025/11/04/7
http://www.openwall.com/lists/oss-security/2025/11/05/1
http://www.openwall.com/lists/oss-security/2025/11/05/7
Patch https://github.com/squid-cache/squid/pull/504
Patch https://github.com/squid-cache/squid/pull/505
Mailing List https://lists.debian.org/debian-lts-announce/2020/07/msg00009.html
Third Party Advisory https://usn.ubuntu.com/4356-1/
Third Party Advisory https://www.debian.org/security/2020/dsa-4732
45
/ 100
moderate-risk
Severity 23/34 · High
Exploitability 8/34 · Low
Exposure 14/34 · Moderate