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Vulnerability record · CVE-2005-2088 · published 5 July 2005

CVE-2005-2088: Apache http server http request smuggling vulnerability

Apache · Http Server

The Apache HTTP server before 1.3.34, and 2.0.x before 2.0.55, when acting as an HTTP proxy, allows remote attackers to poison the web cache, bypass web application firewall protection, and conduct XSS attacks via an HTTP request with both a "Transfer-Encoding: chunked" header and a Content-Length header, which causes Apache to incorrectly handle and forward the body of the request in a way that causes the receiving server to process it as a separate HTTP request, aka "HTTP Request Smuggling."

4.3 CVSS 2.0 Medium EPSS 20% · top 2.6% CWE-444 · HTTP request smuggling
4.3CVSS 2.0 base score
20%EPSS exploitation probability, 30 days
NoNot in CISA KEV
2Affected product versions listed by NVD
118References, 4 tagged exploit
16 Jun 2026Last modified by NVD

Description

The Apache HTTP server before 1.3.34, and 2.0.x before 2.0.55, when acting as an HTTP proxy, allows remote attackers to poison the web cache, bypass web application firewall protection, and conduct XSS attacks via an HTTP request with both a "Transfer-Encoding: chunked" header and a Content-Length header, which causes Apache to incorrectly handle and forward the body of the request in a way that causes the receiving server to process it as a separate HTTP request, aka "HTTP Request Smuggling."

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

Affected products

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

References

LinkTags
http://docs.info.apple.com/article.html?artnum=302847 Broken Link
http://lists.trustix.org/pipermail/tsl-announce/2005-October/000354.html Broken Link
http://marc.info/?l=apache-httpd-announce&m=112931556417329&w=3 Mailing ListThird Party Advisory
http://seclists.org/lists/bugtraq/2005/Jun/0025.html Issue TrackingMailing ListThird Party Advisory
http://secunia.com/advisories/14530 Not Applicable
http://secunia.com/advisories/17319 Not Applicable
http://secunia.com/advisories/17487 Not Applicable
http://secunia.com/advisories/17813 Not Applicable
http://secunia.com/advisories/19072 Not Applicable
http://secunia.com/advisories/19073 Not Applicable
http://secunia.com/advisories/19185 Not Applicable
http://secunia.com/advisories/19317 Not Applicable
http://secunia.com/advisories/23074 Not Applicable
http://securityreason.com/securityalert/604 ExploitThird Party Advisory
http://securitytracker.com/id?1014323 Broken LinkThird Party AdvisoryVDB Entry
http://slackware.com/security/viewer.php?l=slackware-security&y=2005&m=slackware-security.600000 Third Party Advisory
http://sunsolve.sun.com/search/document.do?assetkey=1-26-102197-1 Broken Link
http://sunsolve.sun.com/search/document.do?assetkey=1-26-102198-1 Broken Link
http://support.avaya.com/elmodocs2/security/ASA-2006-081.htm Third Party Advisory
http://www-1.ibm.com/support/search.wss?rs=0&q=PK13959&apar=only Broken LinkThird Party Advisory
http://www-1.ibm.com/support/search.wss?rs=0&q=PK16139&apar=only Broken LinkThird Party Advisory
http://www.apache.org/dist/httpd/CHANGES_1.3 Broken LinkVendor Advisory
http://www.apache.org/dist/httpd/CHANGES_2.0 Broken LinkVendor Advisory
http://www.debian.org/security/2005/dsa-803 Mailing ListThird Party Advisory
http://www.debian.org/security/2005/dsa-805 Mailing ListThird Party Advisory
http://www.mandriva.com/security/advisories?name=MDKSA-2005:130 Third Party Advisory
http://www.novell.com/linux/security/advisories/2005_18_sr.html Broken Link
http://www.novell.com/linux/security/advisories/2005_46_apache.html Broken Link
http://www.redhat.com/support/errata/RHSA-2005-582.html Broken LinkThird Party Advisory
http://www.securiteam.com/securityreviews/5GP0220G0U.html Broken LinkExploit
http://www.securityfocus.com/archive/1/428138/100/0/threaded Broken LinkThird Party AdvisoryVDB Entry
http://www.securityfocus.com/bid/14106 Broken LinkThird Party AdvisoryVDB Entry
http://www.securityfocus.com/bid/15647 Broken LinkThird Party AdvisoryVDB Entry
http://www.ubuntu.com/usn/usn-160-2 Broken Link
http://www.vupen.com/english/advisories/2005/2140 Broken LinkPermissions Required
http://www.vupen.com/english/advisories/2005/2659 Broken LinkPermissions Required
http://www.vupen.com/english/advisories/2006/0789 Broken LinkPermissions Required
http://www.vupen.com/english/advisories/2006/1018 Broken LinkPermissions Required
http://www.vupen.com/english/advisories/2006/4680 Broken LinkPermissions Required
http://www.watchfire.com/resources/HTTP-Request-Smuggling.pdf Broken Link

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Source: NIST National Vulnerability Database (record CVE-2005-2088), CISA KEV, FIRST EPSS (scores of 2026-09-26). This page is refreshed as NVD updates the record.