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CVE-2016-4556
Double free vulnerability in Esi.cc in Squid 3.x before 3.5.18 and 4.x before 4.0.10 allows remote servers to cause a denial of service…
High7.5EPSS 23.1%
- Published
- Updated
- Reserved
- Assigned by
- mitre
Description
Double free vulnerability in Esi.cc in Squid 3.x before 3.5.18 and 4.x before 4.0.10 allows remote servers to cause a denial of service (crash) via a crafted Edge Side Includes (ESI) response.
Scores
| Scored by | CVSS | Score | Vector |
|---|---|---|---|
| NVDNVD · Modified | 3.0 | High7.5 | CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H |
- EPSS (exploitation in 30 days)
- 23.1% · top 2.2% of all CVEs (2 Nov 2026)
Loading the EPSS history…
The list uses the assigner's score when there is one, then CISA's, then NVD's: High 7.5.
Weakness
- n/a
Affected products
n/a
- affected n/a
References (16)
- GLSA-201607-01 (opens in a new tab)vendor-advisoryx_refsource_GENTOOx_transferred
- http://www.squid-cache.org/Versions/v3/3.5/changesets/SQUID-2016_9.patch (opens in a new tab)x_refsource_CONFIRMx_transferred
- http://www.oracle.com/technetwork/topics/security/linuxbulletinapr2016-2952096.html (opens in a new tab)x_refsource_CONFIRMx_transferred
- SUSE-SU-2016:1996 (opens in a new tab)vendor-advisoryx_refsource_SUSEx_transferred
- http://www.squid-cache.org/Versions/v3/3.4/changesets/SQUID-2016_9.patch (opens in a new tab)x_refsource_CONFIRMx_transferred
- USN-2995-1 (opens in a new tab)vendor-advisoryx_refsource_UBUNTUx_transferred
- [oss-security] 20160506 Re: CVE Request: Squid HTTP caching proxy (opens in a new tab)mailing-listx_refsource_MLISTx_transferred
- RHSA-2016:1140 (opens in a new tab)vendor-advisoryx_refsource_REDHATx_transferred
- openSUSE-SU-2016:2081 (opens in a new tab)vendor-advisoryx_refsource_SUSEx_transferred
- 1035770 (opens in a new tab)vdb-entryx_refsource_SECTRACKx_transferred
- RHSA-2016:1138 (opens in a new tab)vendor-advisoryx_refsource_REDHATx_transferred
- http://www.squid-cache.org/Advisories/SQUID-2016_9.txt (opens in a new tab)x_refsource_CONFIRMx_transferred
- RHSA-2016:1139 (opens in a new tab)vendor-advisoryx_refsource_REDHATx_transferred
- SUSE-SU-2016:2089 (opens in a new tab)vendor-advisoryx_refsource_SUSEx_transferred
- [oss-security] 20160506 CVE Request: Squid HTTP caching proxy (opens in a new tab)mailing-listx_refsource_MLISTx_transferred
- DSA-3625 (opens in a new tab)vendor-advisoryx_refsource_DEBIANx_transferred
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)
- OSV.dev (opens in a new tab)
- GitHub Advisories (opens in a new tab)
- CIRCL Vulnerability-Lookup (opens in a new tab)
Record last updated .