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Vulnerability record · CVE-2013-1839 · published 30 September 2013

CVE-2013-1839: Squid-cache squid improper input validation vulnerability

Squid Cache · Squid

The strHdrAcptLangGetItem function in errorpage.cc in Squid 3.2.x before 3.2.9 and 3.3.x before 3.3.3 allows remote attackers to cause a denial of service (infinite loop and CPU consumption) via a "," character in an Accept-Language header.

7.8 CVSS 2.0 High EPSS 18% · top 2.9% CWE-20 · Improper input validation
7.8CVSS 2.0 base score
18%EPSS exploitation probability, 30 days
NoNot in CISA KEV
1Affected product versions listed by NVD
12References
16 Jun 2026Last modified by NVD

Description

The strHdrAcptLangGetItem function in errorpage.cc in Squid 3.2.x before 3.2.9 and 3.3.x before 3.3.3 allows remote attackers to cause a denial of service (infinite loop and CPU consumption) via a "," character in an Accept-Language header.

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

Affected products

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

References

LinkTags
http://archives.neohapsis.com/archives/bugtraq/2013-03/0025.html
http://archives.neohapsis.com/archives/bugtraq/2013-03/0069.html
http://secunia.com/advisories/52588 Vendor Advisory
http://www.openwall.com/lists/oss-security/2013/03/11/7
http://www.securityfocus.com/bid/58316
http://www.squid-cache.org/Advisories/SQUID-2013_1.txt
http://archives.neohapsis.com/archives/bugtraq/2013-03/0025.html
http://archives.neohapsis.com/archives/bugtraq/2013-03/0069.html
http://secunia.com/advisories/52588 Vendor Advisory
http://www.openwall.com/lists/oss-security/2013/03/11/7
http://www.securityfocus.com/bid/58316
http://www.squid-cache.org/Advisories/SQUID-2013_1.txt

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

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Source: NIST National Vulnerability Database (record CVE-2013-1839), CISA KEV, FIRST EPSS (scores of 2026-09-26). This page is refreshed as NVD updates the record.