CVE-2017-5647 Exposure of Sensitive Information to an Unauthorized Actor in Apache Tomcat

What is CVE-2017-5647?

CVE-2017-5647 is a high-severity vulnerability in Apache Tomcat, published on 17 Apr 2017. An attacker can exploit it over the internet without logging in, with no action from the victim.

Official description

A bug in the handling of the pipelined requests in Apache Tomcat 9.0.0.M1 to 9.0.0.M18, 8.5.0 to 8.5.12, 8.0.0.RC1 to 8.0.42, 7.0.0 to 7.0.76, and 6.0.0 to 6.0.52, when send file was used, results in the pipelined request being lost when send file processing of the previous request completed. This could result in responses appearing to be sent for the wrong request. For example, a user agent that sent requests A, B and C could see the correct response for request A, the response for request C for request B and no response for request C.

Weakness: CWE-200

Which versions are affected by CVE-2017-5647?

10 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-2017-5647?

Upgrade org.apache.tomcat:tomcat to a fixed version for your release line: 6.0.53, 7.0.77, 8.0.43 or 8.5.13.

Is CVE-2017-5647 being exploited?

There is no known exploitation of CVE-2017-5647 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-3gv7-3h64-78cm, UBUNTU-CVE-2017-5647.