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Vulnerability record · CVE-2008-5519 · published 9 April 2009

CVE-2008-5519: Apache mod jk information exposure vulnerability

Apache · Mod Jk

The JK Connector (aka mod_jk) 1.2.0 through 1.2.26 in Apache Tomcat allows remote attackers to obtain sensitive information via an arbitrary request from an HTTP client, in opportunistic circumstances involving (1) a request from a different client that included a Content-Length header but no POST data or (2) a rapid series of requests, related to noncompliance with the AJP protocol's requirements for requests containing Content-Length headers.

2.6 CVSS 2.0 Low EPSS 7.3% · top 5.9% CWE-200 · Information exposure
2.6CVSS 2.0 base score
7.3%EPSS exploitation probability, 30 days
NoNot in CISA KEV
2Affected product versions listed by NVD
52References, 2 tagged exploit
16 Jun 2026Last modified by NVD

Description

The JK Connector (aka mod_jk) 1.2.0 through 1.2.26 in Apache Tomcat allows remote attackers to obtain sensitive information via an arbitrary request from an HTTP client, in opportunistic circumstances involving (1) a request from a different client that included a Content-Length header but no POST data or (2) a rapid series of requests, related to noncompliance with the AJP protocol's requirements for requests containing Content-Length headers.

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

Affected products

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

References

LinkTags
http://lists.opensuse.org/opensuse-security-announce/2009-11/msg00004.html
http://mail-archives.apache.org/mod_mbox/www-announce/200904.mbox/%3C49DBBAC0.2080400%40apache.org%3E
http://marc.info/?l=tomcat-dev&m=123913700700879
http://secunia.com/advisories/29283
http://secunia.com/advisories/34621 Vendor Advisory
http://secunia.com/advisories/35537
http://securitytracker.com/id?1022001
http://sunsolve.sun.com/search/document.do?assetkey=1-26-262468-1
http://svn.eu.apache.org/viewvc/tomcat/connectors/trunk/jk/native/common/jk_ajp_common.c?r1=702387&r2=702540&pathrev=702 Vendor Advisory
http://svn.eu.apache.org/viewvc/tomcat/connectors/trunk/jk/xdocs/miscellaneous/changelog.xml?view=markup&pathrev=702540 ExploitVendor Advisory
http://svn.eu.apache.org/viewvc?view=rev&revision=702540 Vendor Advisory
http://tomcat.apache.org/connectors-doc/miscellaneous/changelog.html Vendor Advisory
http://tomcat.apache.org/security-jk.html Vendor Advisory
http://www.debian.org/security/2009/dsa-1810
http://www.openwall.com/lists/oss-security/2009/04/08/10
http://www.redhat.com/support/errata/RHSA-2009-0446.html
http://www.securityfocus.com/archive/1/502530/100/0/threaded
http://www.securityfocus.com/bid/34412
http://www.vupen.com/english/advisories/2009/0973
https://bugzilla.redhat.com/show_bug.cgi?id=490201 Vendor Advisory
https://lists.apache.org/thread.html/277d42b48b6e9aef50949c0dcc79ce21693091d73da246b3c1981925%40%3Cdev.tomcat.apache.org
https://lists.apache.org/thread.html/5b7a23e245c93235c503900da854a143596d901bf1a1f67e851a5de4%40%3Cdev.tomcat.apache.org
https://lists.apache.org/thread.html/8d2a579bbd977c225c70cb23b0ec54865fb0dab5da3eff1e060c9935%40%3Cdev.tomcat.apache.org
https://lists.apache.org/thread.html/ba661b0edd913b39ff129a32d855620dd861883ade05fd88a8ce517d%40%3Cdev.tomcat.apache.org
https://lists.apache.org/thread.html/r5c616dfc49156e4b06ffab842800c80f4425924d0f20c452c127a53c%40%3Cdev.tomcat.apache.or
https://lists.apache.org/thread.html/rf8e8c091182b45daa50d3557cad9b10bb4198e3f08cf8f1c66a1b08d%40%3Cdev.tomcat.apache.or
http://lists.opensuse.org/opensuse-security-announce/2009-11/msg00004.html
http://mail-archives.apache.org/mod_mbox/www-announce/200904.mbox/%3C49DBBAC0.2080400%40apache.org%3E
http://marc.info/?l=tomcat-dev&m=123913700700879
http://secunia.com/advisories/29283
http://secunia.com/advisories/34621 Vendor Advisory
http://secunia.com/advisories/35537
http://securitytracker.com/id?1022001
http://sunsolve.sun.com/search/document.do?assetkey=1-26-262468-1
http://svn.eu.apache.org/viewvc/tomcat/connectors/trunk/jk/native/common/jk_ajp_common.c?r1=702387&r2=702540&pathrev=702 Vendor Advisory
http://svn.eu.apache.org/viewvc/tomcat/connectors/trunk/jk/xdocs/miscellaneous/changelog.xml?view=markup&pathrev=702540 ExploitVendor Advisory
http://svn.eu.apache.org/viewvc?view=rev&revision=702540 Vendor Advisory
http://tomcat.apache.org/connectors-doc/miscellaneous/changelog.html Vendor Advisory
http://tomcat.apache.org/security-jk.html Vendor Advisory
http://www.debian.org/security/2009/dsa-1810

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Source: NIST National Vulnerability Database (record CVE-2008-5519), CISA KEV, FIRST EPSS (scores of 2026-09-26). This page is refreshed as NVD updates the record.