CVE-2011-2481

CVE-2011-2481 is a medium-severity vulnerability in Apache Tomcat with a CVSS 2.0 base score of 4.6. It is not currently listed as actively exploited by CISA, and its EPSS exploit-prediction score is low.

Key facts

Description

Apache Tomcat 7.0.x before 7.0.17 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. NOTE: this vulnerability exists because of a CVE-2009-0783 regression.

Frequently asked questions

What is CVE-2011-2481?
Apache Tomcat 7.0.x before 7.0.17 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. NOTE: this vulnerability exists because of a CVE-2009-0783 regression.
How severe is CVE-2011-2481?
CVE-2011-2481 has a CVSS 2.0 base score of 4.6, rated medium severity.
Is CVE-2011-2481 being actively exploited?
It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 1% (53rd percentile), an estimate of the probability of exploitation in the next 30 days.
What products are affected by CVE-2011-2481?
CVE-2011-2481 primarily affects Apache Tomcat. In total, 16 product configurations (CPEs) are listed as vulnerable; see the affected-products list for the exact versions.
How do I fix CVE-2011-2481?
Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround.
When was CVE-2011-2481 published?
CVE-2011-2481 was published on 2011-08-15 and last updated on 2026-06-16.

References

Affected products (16)

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