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Servers and applications

CVE-2009-0783

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.

Severity
Medium 4.2
Published
5 Jun 2009
Last changed
16 Jun 2026
Added to UpHeron
21 Oct 2026
Exploit chance
0.8% in the next 30 daysHigher than 57% of CVEs. EPSS by FIRST, 12 Nov 2026
Weakness
Information exposure (CWE-200)
Attack
Needs local access · Needs an administrator account · No user action needed
Attacker can
Read some data · Change some data · Slow it down
CVSS vector
CVSS:3.0/AV:L/AC:L/PR:H/UI:N/S:U/C:L/I:L/A:L
Sources
NVD

Affected software

SoftwareAffected versions
Apache TomcatServers and applications · cpe:a:apache:tomcat
  • From 4.1.0 up to 4.1.39
  • From 5.5.0 up to 5.5.27
  • From 6.0.0 up to 6.0.18

References

  • NVD https://nvd.nist.gov/vuln/detail/CVE-2009-0783
  • CVE.org https://www.cve.org/CVERecord?id=CVE-2009-0783