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Vulnerability record · CVE-2007-6239 · published 4 December 2007

CVE-2007-6239: Squid web proxy cache improper input validation vulnerability

Squid · Squid Web Proxy Cache

The "cache update reply processing" functionality in Squid 2.x before 2.6.STABLE17 and Squid 3.0 allows remote attackers to cause a denial of service (crash) via unknown vectors related to HTTP headers and an Array memory leak during requests for cached objects.

5.0 CVSS 2.0 Medium EPSS 27% · top 2.0% CWE-20 · Improper input validation
5.0CVSS 2.0 base score
27%EPSS exploitation probability, 30 days
NoNot in CISA KEV
1Affected product versions listed by NVD
54References, 2 tagged exploit
16 Jun 2026Last modified by NVD

Description

The "cache update reply processing" functionality in Squid 2.x before 2.6.STABLE17 and Squid 3.0 allows remote attackers to cause a denial of service (crash) via unknown vectors related to HTTP headers and an Array memory leak during requests for cached objects.

AV:N/AC:L/Au:N/C:N/I:N/A:P

Affected products

1 vulnerable configurations from NVD's CPE data, grouped by vendor and product.

References

LinkTags
http://bugs.gentoo.org/show_bug.cgi?id=201209
http://lists.opensuse.org/opensuse-security-announce/2008-01/msg00002.html
http://secunia.com/advisories/27910 PatchVendor Advisory
http://secunia.com/advisories/28091 Vendor Advisory
http://secunia.com/advisories/28109 Vendor Advisory
http://secunia.com/advisories/28350 Vendor Advisory
http://secunia.com/advisories/28381 Vendor Advisory
http://secunia.com/advisories/28403 Vendor Advisory
http://secunia.com/advisories/28412 Vendor Advisory
http://secunia.com/advisories/28814 Vendor Advisory
http://secunia.com/advisories/34467 Vendor Advisory
http://security.gentoo.org/glsa/glsa-200801-05.xml
http://security.gentoo.org/glsa/glsa-200903-38.xml
http://www.debian.org/security/2008/dsa-1482 Patch
http://www.kb.cert.org/vuls/id/232881 US Government Resource
http://www.mandriva.com/security/advisories?name=MDVSA-2008:002
http://www.redhat.com/support/errata/RHSA-2007-1130.html Patch
http://www.securityfocus.com/bid/26687 Patch
http://www.securitytracker.com/id?1019036
http://www.squid-cache.org/Advisories/SQUID-2007_2.txt PatchVendor Advisory
http://www.squid-cache.org/Versions/v2/2.6/changesets/11780.patch ExploitVendor Advisory
http://www.ubuntu.com/usn/usn-565-1
http://www.vupen.com/english/advisories/2007/4066 Vendor Advisory
https://bugzilla.redhat.com/show_bug.cgi?id=410181
https://oval.cisecurity.org/repository/search/definition/oval%3Aorg.mitre.oval%3Adef%3A10915
https://www.redhat.com/archives/fedora-package-announce/2007-December/msg00497.html
https://www.redhat.com/archives/fedora-package-announce/2007-December/msg00507.html
http://bugs.gentoo.org/show_bug.cgi?id=201209
http://lists.opensuse.org/opensuse-security-announce/2008-01/msg00002.html
http://secunia.com/advisories/27910 PatchVendor Advisory
http://secunia.com/advisories/28091 Vendor Advisory
http://secunia.com/advisories/28109 Vendor Advisory
http://secunia.com/advisories/28350 Vendor Advisory
http://secunia.com/advisories/28381 Vendor Advisory
http://secunia.com/advisories/28403 Vendor Advisory
http://secunia.com/advisories/28412 Vendor Advisory
http://secunia.com/advisories/28814 Vendor Advisory
http://secunia.com/advisories/34467 Vendor Advisory
http://security.gentoo.org/glsa/glsa-200801-05.xml
http://security.gentoo.org/glsa/glsa-200903-38.xml

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Related vulnerabilities

Same products first, then exploited flaws of the same weakness class.

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Source: NIST National Vulnerability Database (record CVE-2007-6239), CISA KEV, FIRST EPSS (scores of 2026-09-26). This page is refreshed as NVD updates the record.