CVE-2019-18860: canonical ubuntu_linux Injection
CVSS: 6.1v3.1MediumModified
AliasesUBUNTU-CVE-2019-18860DEBIAN-CVE-2019-18860
Published 20-03-2020Last modified 05-11-2025
Vulnerability summary
CVE-2019-18860 is a medium (CVSS 6.1) Injection vulnerability in canonical ubuntu_linux. EPSS estimates a 5.50% chance of exploitation in the next 30 days, higher than 92.6% of scored vulnerabilities.
CVSS score
6.1/10
010
Medium · v3.1 (NVD)EPSS score
5.50%
0%100%
Low · 0.00 pp in 30 daysKEVNot listedIn no KEV catalog
RansomwareNone recordedNo known use recorded
Public exploits0No public exploits recorded
Advisory lineage
Upstream 0 · Downstream 10 · Related 7Timeline
- 20-03-2020PublishedVulnerability first disclosed.
- 05-11-2025Last modifiedVulnerability information updated.
Description
Squid before 4.9, when certain web browsers are used, mishandles HTML in the host (aka hostname) parameter to cachemgr.cgi.
CVSS metrics
4 scores · 3 sources · 2 versionsMedium 6.1Preferred score · NVD (NIST)
CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:C/C:L/I:L/A:NSourcesAll 3 agree
- OSV · UbuntuEcosystem advisory · calculated6.1MediumCVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:C/C:L/I:L/A:N
- OSV · DebianEcosystem advisory · calculated6.1MediumCVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:C/C:L/I:L/A:N
Medium 4.3Preferred score · NVD (NIST)
AV:N/AC:M/Au:N/C:N/I:P/A:NSourcesSingle source
EPSS trend
Probability
5.50%
Chance of exploitation in the next 30 days
Percentile
93%
Versus all other CVEs
30-day change
0.00 pp
From 5.50% on 18-09-2026
18-09-202618-10-2026
EPSS score5.50%
Known exploited
Compare KEV catalogsNot in any of the 3 tracked catalogs.
Public exploits
0 foundNo public exploits indexed.
Weaknesses
CWE · root causeAffected systems
Debian2 products
- squid< 4.9-1
- debian_linuxEOL9.0 | 10.0
Canonical1 product
- ubuntu_linuxEOL16.04 | 18.04 | 19.10 | 20.04
Opensuse1 product
- leapEOL15.1
Squid-cache1 product
- squid< 4.9
Ubuntu1 product
- squid3< 3.5.12-1ubuntu7.11 | < 3.5.27-1ubuntu1.6
5 vendors · 6 products
References
13 links- lists.opensuse.org/opensuse-security-announce/2020-05/msg00018.htmlVendor AdvisoryX Refsource SUSEMailing ListThird Party Advisory
lists.debian.org/debian-lts-announce/2020/07/msg00009.htmlMailing ListX Refsource MLISTThird Party Advisory