CVE-2011-3375 Apache Tomcat Exposes IP Addresses and HTTP Headers of Requests

What is CVE-2011-3375?

CVE-2011-3375 is a medium-severity vulnerability in Apache Tomcat, published on 19 Jan 2012. An attacker can exploit it over the internet without logging in, with no action from the victim.

Official description

Apache Tomcat 6.0.30 through 6.0.33 and 7.x before 7.0.22 does not properly perform certain caching and recycling operations involving request objects, which allows remote attackers to obtain unintended read access to IP address and HTTP header information in opportunistic circumstances by reading TCP data.

Weakness: CWE-200

Which versions are affected by CVE-2011-3375?

4 open source packages ship an affected version, including org.apache.tomcat:tomcat. It affects 1 product.

Products include Apache Tomcat.

How do I fix CVE-2011-3375?

Upgrade org.apache.tomcat:tomcat to a fixed version for your release line: 6.0.35 or 7.0.22.

Is CVE-2011-3375 being exploited?

There is no known exploitation of CVE-2011-3375 in the wild and no public exploit code.

Other vulnerabilities in Apache Tomcat

• CVE-2025-24813 Apache Tomcat Path Equivalence Exploited Critical 10.0
• CVE-2016-8735 Apache Tomcat Remote Code Execution Exploited Critical 9.8
• CVE-2017-12617 Apache Tomcat Remote Code Execution Exploited High 8.1
• CVE-2017-12615 Apache Tomcat on Windows Remote Code Execution Exploited High 8.1
• CVE-2026-34486 Apache Tomcat Missing Encryption of Sensitive Data Exploited High 7.5

All Apache Tomcat vulnerabilities

Sources

• CVE record
• NVD
• OSV
• GitHub advisory
• How this page is made

Also known as GHSA-rp8h-vr48-4j8p.