Back
CVE-2019-18860Squid before 4.9, when certain web browsers are used, mishandles HTML in the host (aka hostname) parameter to cachemgr.cgi.
- 6.1MediumCVSS base score
- 5.0%Exploitation in 30 daysEPSS · top 7.7% of all CVEs
- NoKnown exploitednot in CISA's KEV catalog
- NonePublic exploitsnone known yet
Description
Squid before 4.9, when certain web browsers are used, mishandles HTML in the host (aka hostname) parameter to cachemgr.cgi.
Timeline
ID reserved
By mitre
- 4 months later
· 4 months later
Published
- 6 years later
· 6 years later
Record updated
Changes after publication (a new score, a public exploit, EPSS crossing 1, 10 or 50 %, leaving KEV) are kept since November 2026; earlier ones are not known.
Scores
| Scored by | CVSS | Score | Vector |
|---|---|---|---|
| NVDNVD · Modified | 3.1 | Medium6.1 | CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:C/C:L/I:L/A:N |
- EPSS (exploitation in 30 days)
- 5.0% · top 7.7% of all CVEs (14 Nov 2026)
Loading the EPSS history…
The list uses the assigner's score when there is one, then CISA's, then NVD's: Medium 6.1.
Affected products
n/a
- affected n/a
References
References9
- https://github.com/squid-cache/squid/pull/504 (opens in a new tab)x_refsource_CONFIRMx_transferred
- https://github.com/squid-cache/squid/pull/505 (opens in a new tab)x_refsource_MISCx_transferred
- openSUSE-SU-2020:0623 (opens in a new tab)vendor-advisoryx_refsource_SUSEx_transferred
- USN-4356-1 (opens in a new tab)vendor-advisoryx_refsource_UBUNTUx_transferred
- [debian-lts-announce] 20200710 [SECURITY] [DLA 2278-1] squid3 security update (opens in a new tab)mailing-listx_refsource_MLISTx_transferred
- DSA-4732 (opens in a new tab)vendor-advisoryx_refsource_DEBIANx_transferred
- http://www.openwall.com/lists/oss-security/2025/11/04/7 (opens in a new tab)
- http://www.openwall.com/lists/oss-security/2025/11/05/1 (opens in a new tab)
- http://www.openwall.com/lists/oss-security/2025/11/05/7 (opens in a new tab)
Sources
The same CVE in the primary databases and aggregators, to check against.
- CVE.org record (opens in a new tab)
- CVE List JSON (GitHub) (opens in a new tab)
- NVD (opens in a new tab)
- FIRST EPSS (opens in a new tab)
- EUVD EUVD-2019-8556 (opens in a new tab)
- OSV.dev (opens in a new tab)
- GitHub Advisories (opens in a new tab)
- CIRCL Vulnerability-Lookup (opens in a new tab)
Badge for a README or a ticket
[](https://cveledger.app/cve/CVE-2019-18860)Record last updated .