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Vulnerability record · CVE-2005-3751 · published 22 November 2005

CVE-2005-3751: Apsis pound vulnerability

Apsis · Pound

HTTP request smuggling vulnerability in Pound before 1.9.4 allows remote attackers to poison web caches, bypass web application firewall protection, and conduct XSS attacks via an HTTP request with conflicting Content-length and Transfer-encoding headers.

4.3 CVSS 2.0 Medium EPSS 1.5% · top 27.3%
4.3CVSS 2.0 base score
1.5%EPSS exploitation probability, 30 days
NoNot in CISA KEV
1Affected product versions listed by NVD
16References
16 Jun 2026Last modified by NVD

Description

HTTP request smuggling vulnerability in Pound before 1.9.4 allows remote attackers to poison web caches, bypass web application firewall protection, and conduct XSS attacks via an HTTP request with conflicting Content-length and Transfer-encoding headers.

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

Affected products

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

References

LinkTags
http://secunia.com/advisories/18367 Vendor Advisory
http://secunia.com/advisories/18381 Vendor Advisory
http://secunia.com/advisories/20215 Vendor Advisory
http://secunia.com/advisories/20510 Vendor Advisory
http://www.apsis.ch/pound/pound_list/archive/2005/2005-10/1129827166000/index_html?fullMode=1#1129827166000
http://www.debian.org/security/2005/dsa-934
http://www.gentoo.org/security/en/glsa/glsa-200606-05.xml
http://www.novell.com/linux/security/advisories/2006_05_19.html
http://secunia.com/advisories/18367 Vendor Advisory
http://secunia.com/advisories/18381 Vendor Advisory
http://secunia.com/advisories/20215 Vendor Advisory
http://secunia.com/advisories/20510 Vendor Advisory
http://www.apsis.ch/pound/pound_list/archive/2005/2005-10/1129827166000/index_html?fullMode=1#1129827166000
http://www.debian.org/security/2005/dsa-934
http://www.gentoo.org/security/en/glsa/glsa-200606-05.xml
http://www.novell.com/linux/security/advisories/2006_05_19.html

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Related vulnerabilities

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

9.8CVE-2016-10711Debian linux http request smuggling vulnerabilityApsis Pound before 2.8a allows request smuggling via crafted headers, a different vulnerability than CVE-2005-3751.EPSS 2.8%9.1CVE-2018-21245Apsis pound http request smuggling vulnerabilityPound before 2.8 allows HTTP request smuggling, a related issue to CVE-2016-10711.EPSS 1.1%7.5CVE-2005-1391Apsis pound vulnerabilityBuffer overflow in the add_port function in APSIS Pound 1.8.2 and earlier allows remote attackers to execute arbitrary code via a long Host HTTP head…EPSS 6.1%7.5CVE-2004-2026Apsis pound vulnerabilityFormat string vulnerability in the logmsg function in svc.c for Pound 1.5 and earlier allows remote attackers to execute arbitrary code via format st…EPSS 6.6%

Source: NIST National Vulnerability Database (record CVE-2005-3751), CISA KEV, FIRST EPSS (scores of 2026-09-27). This page is refreshed as NVD updates the record.