Vulnerability Description
Squid before 4.9, when certain web browsers are used, mishandles HTML in the host (aka hostname) parameter to cachemgr.cgi.
CVSS Score
6.1
MEDIUM
CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:C/C:L/I:L/A:N
Affected Products
| Vendor | Product | Versions |
|---|---|---|
| Squid-Cache | Squid | < 4.9 |
| Debian | Debian Linux | 9.0 |
| Canonical | Ubuntu Linux | 16.04 |
| Opensuse | Leap | 15.1 |
Related Weaknesses (CWE)
References
- http://lists.opensuse.org/opensuse-security-announce/2020-05/msg00018.htmlMailing ListThird Party Advisory
- https://github.com/squid-cache/squid/pull/504PatchThird Party Advisory
- https://github.com/squid-cache/squid/pull/505PatchThird Party Advisory
- https://lists.debian.org/debian-lts-announce/2020/07/msg00009.htmlMailing ListThird Party Advisory
- https://usn.ubuntu.com/4356-1/Third Party Advisory
- https://www.debian.org/security/2020/dsa-4732Third Party Advisory
- http://lists.opensuse.org/opensuse-security-announce/2020-05/msg00018.htmlMailing ListThird Party Advisory
- 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
- https://github.com/squid-cache/squid/pull/504PatchThird Party Advisory
- https://github.com/squid-cache/squid/pull/505PatchThird Party Advisory
- https://lists.debian.org/debian-lts-announce/2020/07/msg00009.htmlMailing ListThird Party Advisory
- https://usn.ubuntu.com/4356-1/Third Party Advisory
- https://www.debian.org/security/2020/dsa-4732Third Party Advisory
FAQ
What is CVE-2019-18860?
CVE-2019-18860 is a vulnerability with a CVSS score of 6.1 (MEDIUM). Squid before 4.9, when certain web browsers are used, mishandles HTML in the host (aka hostname) parameter to cachemgr.cgi.
How severe is CVE-2019-18860?
CVE-2019-18860 has been rated MEDIUM with a CVSS base score of 6.1/10. Review the CVSS metrics above for detailed severity breakdown.
Is there a patch for CVE-2019-18860?
Check the references section above for vendor advisories and patch information. Affected products include: Squid-Cache Squid, Debian Debian Linux, Canonical Ubuntu Linux, Opensuse Leap.