When the default servlet in Apache Tomcat versions 9.0.0.M1 to 9.0.11, 8.5.0 to 8.5.33 and 7.0.23 to 7.0.90 returned a redirect to a directo

Summary

When the default servlet in Apache Tomcat versions 9.0.0.M1 to 9.0.11, 8.5.0 to 8.5.33 and 7.0.23 to 7.0.90 returned a redirect to a directory (e.g. redirecting to '/foo/' when the user requested '/foo') a specially crafted URL could be used to cause the redirect to be generated to any URI of the attackers choice.

Timeline

1. Oct 4, 2018, 1:00 PM UTCCVE published
2. Jul 13, 2021Public exploit on Exploit-DB

   EDB-50118

3. Jun 4, 2025, 2:25 PM UTCCISA SSVC assessment

   Exploitation: none · Automatable: no · Technical impact: partial

4. Oct 15, 2026, 5:21 PM UTCRecord last updated
5. Oct 22, 2026EPSS reached 10%

   FIRST estimates at least a 10% chance of exploitation in the next 30 days

Affected versions

• Apache Software Foundation Apache Tomcat

  9.0.0.M1 to 9.0.11, 8.5.0 to 8.5.33, 7.0.23 to 7.0.90

• org.apache.tomcat.embed:tomcat-embed-coreMaven

  From 8.5.0 · fixed in 8.5.34

• org.apache.tomcat.embed:tomcat-embed-coreMaven

  From 7.0.23 · fixed in 7.0.91

• org.apache.tomcat.embed:tomcat-embed-coreMaven

  From 9.0.0 · fixed in 9.0.12

References 26