CVE-2009-0783

Name: CVE-2009-0783
Creator: NVD / NIST
Published: 2009-06-05T16:00:00.267+00:00
License: https://creativecommons.org/publicdomain/zero/1.0/

MEDIUMCVSS 4.2/10EPSS 0.81%

Last modified Jun 16, 2026

CVE-2009-0783 is a medium-severity vulnerability rated 4.2/10 on the CVSS scale. Apache Tomcat 4.1.0 through 4.1.39, 5.5.0 through 5.5.27, and 6.0.0 through 6.0.18 permits web applications to replace an XML parser used for other web applications, which allows local users to read or modify the (1) web.xml, (2) context.xml, or (3) tld files of arbitrary web applications via a crafted application that is loaded earlier than the target application.. EPSS estimates a 0.81% chance of exploitation in the next 30 days.

Description

Apache Tomcat 4.1.0 through 4.1.39, 5.5.0 through 5.5.27, and 6.0.0 through 6.0.18 permits web applications to replace an XML parser used for other web applications, which allows local users to read or modify the (1) web.xml, (2) context.xml, or (3) tld files of arbitrary web applications via a crafted application that is loaded earlier than the target application.

Metrics

CVSS 3.0

4.2/10

CVSS:3.0/AV:L/AC:L/PR:H/UI:N/S:U/C:L/I:L/A:L

EPSS Probability

0.81%

52.2th percentile

Probability of exploitation in the next 30 days. Learn more

Weakness Enumeration

CWE-200

Affected Software

Vendor	Product	Versions
Apache	Tomcat	>= 4.1.0, <= 4.1.39
Apache	Tomcat	>= 5.5.0, <= 5.5.27
Apache	Tomcat	>= 6.0.0, <= 6.0.18

References

http://lists.apple.com/archives/security-announce/2010//Mar/msg00001.htmlMailing List
http://lists.opensuse.org/opensuse-security-announce/2009-07/msg00002.htmlThird Party Advisory
http://marc.info/?l=bugtraq&m=127420533226623&w=2Third Party Advisory
http://marc.info/?l=bugtraq&m=129070310906557&w=2Third Party Advisory
http://marc.info/?l=bugtraq&m=136485229118404&w=2Third Party Advisory
http://secunia.com/advisories/35685Vendor Advisory
http://secunia.com/advisories/35788Vendor Advisory
http://secunia.com/advisories/37460Vendor Advisory
http://secunia.com/advisories/42368Vendor Advisory
http://sunsolve.sun.com/search/document.do?assetkey=1-26-263529-1Third Party Advisory
http://support.apple.com/kb/HT4077Third Party Advisory
http://svn.apache.org/viewvc?rev=652592&view=revPatch
http://svn.apache.org/viewvc?rev=681156&view=revPatch
http://svn.apache.org/viewvc?rev=739522&view=revPatch
http://svn.apache.org/viewvc?rev=781542&view=revPatch
http://svn.apache.org/viewvc?rev=781708&view=revPatch
http://tomcat.apache.org/security-4.htmlPatch, Vendor Advisory
http://tomcat.apache.org/security-5.htmlPatch, Vendor Advisory
http://tomcat.apache.org/security-6.htmlPatch, Vendor Advisory
http://www.debian.org/security/2011/dsa-2207Third Party Advisory
http://www.mandriva.com/security/advisories?name=MDVSA-2009:136Third Party Advisory
http://www.mandriva.com/security/advisories?name=MDVSA-2009:138Third Party Advisory
http://www.mandriva.com/security/advisories?name=MDVSA-2010:176Third Party Advisory
http://www.securityfocus.com/archive/1/504090/100/0/threadedThird Party Advisory, VDB Entry
http://www.securityfocus.com/archive/1/507985/100/0/threadedThird Party Advisory, VDB Entry
http://www.securityfocus.com/bid/35416Third Party Advisory, VDB Entry
http://www.securitytracker.com/id?1022336Third Party Advisory, VDB Entry
http://www.vmware.com/security/advisories/VMSA-2009-0016.htmlThird Party Advisory
http://www.vupen.com/english/advisories/2009/1856Vendor Advisory
http://www.vupen.com/english/advisories/2009/3316Vendor Advisory
http://www.vupen.com/english/advisories/2010/3056Vendor Advisory
https://exchange.xforce.ibmcloud.com/vulnerabilities/51195VDB Entry
https://issues.apache.org/bugzilla/show_bug.cgi?id=29936Issue Tracking, Patch
https://issues.apache.org/bugzilla/show_bug.cgi?id=45933Issue Tracking
https://lists.apache.org/thread.html/06cfb634bc7bf37af7d8f760f118018746ad8efbd519c4b789ac9c2e%40%3Cdev.tomcat.apache.org%3E
https://lists.apache.org/thread.html/29dc6c2b625789e70a9c4756b5a327e6547273ff8bde7e0327af48c5%40%3Cdev.tomcat.apache.org%3E
https://lists.apache.org/thread.html/8dcaf7c3894d66cb717646ea1504ea6e300021c85bb4e677dc16b1aa%40%3Cdev.tomcat.apache.org%3E
https://lists.apache.org/thread.html/c62b0e3a7bf23342352a5810c640a94b6db69957c5c19db507004d74%40%3Cdev.tomcat.apache.org%3E
https://lists.apache.org/thread.html/r3aacc40356defc3f248aa504b1e48e819dd0471a0a83349080c6bcbf%40%3Cdev.tomcat.apache.org%3E
https://lists.apache.org/thread.html/r584a714f141eff7b1c358d4679288177bd4ca4558e9999d15867d4b5%40%3Cdev.tomcat.apache.org%3E
https://lists.apache.org/thread.html/rb71997f506c6cc8b530dd845c084995a9878098846c7b4eacfae8db3%40%3Cdev.tomcat.apache.org%3E
https://oval.cisecurity.org/repository/search/definition/oval%3Aorg.mitre.oval%3Adef%3A10716Tool Signature
https://oval.cisecurity.org/repository/search/definition/oval%3Aorg.mitre.oval%3Adef%3A18913Tool Signature
https://oval.cisecurity.org/repository/search/definition/oval%3Aorg.mitre.oval%3Adef%3A6450Tool Signature
https://www.redhat.com/archives/fedora-package-announce/2009-November/msg01156.htmlThird Party Advisory
https://www.redhat.com/archives/fedora-package-announce/2009-November/msg01216.htmlThird Party Advisory
https://www.redhat.com/archives/fedora-package-announce/2009-November/msg01246.htmlThird Party Advisory
http://lists.apple.com/archives/security-announce/2010//Mar/msg00001.htmlMailing List
http://lists.opensuse.org/opensuse-security-announce/2009-07/msg00002.htmlThird Party Advisory
http://marc.info/?l=bugtraq&m=127420533226623&w=2Third Party Advisory
http://marc.info/?l=bugtraq&m=129070310906557&w=2Third Party Advisory
http://marc.info/?l=bugtraq&m=136485229118404&w=2Third Party Advisory
http://secunia.com/advisories/35685Vendor Advisory
http://secunia.com/advisories/35788Vendor Advisory
http://secunia.com/advisories/37460Vendor Advisory
http://secunia.com/advisories/42368Vendor Advisory
http://sunsolve.sun.com/search/document.do?assetkey=1-26-263529-1Third Party Advisory
http://support.apple.com/kb/HT4077Third Party Advisory
http://svn.apache.org/viewvc?rev=652592&view=revPatch
http://svn.apache.org/viewvc?rev=681156&view=revPatch
http://svn.apache.org/viewvc?rev=739522&view=revPatch
http://svn.apache.org/viewvc?rev=781542&view=revPatch
http://svn.apache.org/viewvc?rev=781708&view=revPatch
http://tomcat.apache.org/security-4.htmlPatch, Vendor Advisory
http://tomcat.apache.org/security-5.htmlPatch, Vendor Advisory
http://tomcat.apache.org/security-6.htmlPatch, Vendor Advisory
http://www.debian.org/security/2011/dsa-2207Third Party Advisory
http://www.mandriva.com/security/advisories?name=MDVSA-2009:136Third Party Advisory
http://www.mandriva.com/security/advisories?name=MDVSA-2009:138Third Party Advisory
http://www.mandriva.com/security/advisories?name=MDVSA-2010:176Third Party Advisory
http://www.securityfocus.com/archive/1/504090/100/0/threadedThird Party Advisory, VDB Entry
http://www.securityfocus.com/archive/1/507985/100/0/threadedThird Party Advisory, VDB Entry
http://www.securityfocus.com/bid/35416Third Party Advisory, VDB Entry
http://www.securitytracker.com/id?1022336Third Party Advisory, VDB Entry
http://www.vmware.com/security/advisories/VMSA-2009-0016.htmlThird Party Advisory
http://www.vupen.com/english/advisories/2009/1856Vendor Advisory
http://www.vupen.com/english/advisories/2009/3316Vendor Advisory
http://www.vupen.com/english/advisories/2010/3056Vendor Advisory
https://exchange.xforce.ibmcloud.com/vulnerabilities/51195VDB Entry
https://issues.apache.org/bugzilla/show_bug.cgi?id=29936Issue Tracking, Patch
https://issues.apache.org/bugzilla/show_bug.cgi?id=45933Issue Tracking
https://lists.apache.org/thread.html/06cfb634bc7bf37af7d8f760f118018746ad8efbd519c4b789ac9c2e%40%3Cdev.tomcat.apache.org%3E
https://lists.apache.org/thread.html/29dc6c2b625789e70a9c4756b5a327e6547273ff8bde7e0327af48c5%40%3Cdev.tomcat.apache.org%3E
https://lists.apache.org/thread.html/8dcaf7c3894d66cb717646ea1504ea6e300021c85bb4e677dc16b1aa%40%3Cdev.tomcat.apache.org%3E
https://lists.apache.org/thread.html/c62b0e3a7bf23342352a5810c640a94b6db69957c5c19db507004d74%40%3Cdev.tomcat.apache.org%3E
https://lists.apache.org/thread.html/r3aacc40356defc3f248aa504b1e48e819dd0471a0a83349080c6bcbf%40%3Cdev.tomcat.apache.org%3E
https://lists.apache.org/thread.html/r584a714f141eff7b1c358d4679288177bd4ca4558e9999d15867d4b5%40%3Cdev.tomcat.apache.org%3E
https://lists.apache.org/thread.html/rb71997f506c6cc8b530dd845c084995a9878098846c7b4eacfae8db3%40%3Cdev.tomcat.apache.org%3E
https://oval.cisecurity.org/repository/search/definition/oval%3Aorg.mitre.oval%3Adef%3A10716Tool Signature
https://oval.cisecurity.org/repository/search/definition/oval%3Aorg.mitre.oval%3Adef%3A18913Tool Signature
https://oval.cisecurity.org/repository/search/definition/oval%3Aorg.mitre.oval%3Adef%3A6450Tool Signature
https://www.redhat.com/archives/fedora-package-announce/2009-November/msg01156.htmlThird Party Advisory
https://www.redhat.com/archives/fedora-package-announce/2009-November/msg01216.htmlThird Party Advisory
https://www.redhat.com/archives/fedora-package-announce/2009-November/msg01246.htmlThird Party Advisory

Timeline

Published: Jun 5, 2009
Last Modified: Jun 16, 2026
Status: Modified

Frequently Asked Questions

What is CVE-2009-0783?

How severe is CVE-2009-0783?

CVE-2009-0783 has a CVSS score of 4.2/10 (MEDIUM severity). The EPSS model estimates a 0.81% probability of exploitation in the next 30 days.

How do I fix CVE-2009-0783?

Check the vendor references and advisories linked above for patched versions and mitigation guidance. You can also run a Strix scan to test if your systems are affected.

Are you affected by CVE-2009-0783?

Run a free Strix scan to check your systems for this vulnerability.

Scan your code now

Source: NVD / NIST