CVE-2026-34486 Apache Tomcat Missing Encryption of Sensitive Data
Attackers can bypass the EncryptInterceptor in Apache Tomcat, potentially exposing sensitive data if encryption is enabled.
- Exploited in the wild
- Since 4 Aug 2026
- Login needed
- Not needed
- Attackable
- Over the internet
- Victim action needed
- Not needed
- Fix
- Available
What is CVE-2026-34486?
CVE-2026-34486 is a high-severity vulnerability in Apache Tomcat, published on 9 Apr 2026. An attacker can exploit it over the internet without logging in, with no action from the victim.
Official description
Missing Encryption of Sensitive Data vulnerability in Apache Tomcat due to the fix for CVE-2026-29146 allowing the bypass of the EncryptInterceptor.
This issue affects Apache Tomcat: 11.0.20, 10.1.53, 9.0.116.
Users are recommended to upgrade to version 11.0.21, 10.1.54 or 9.0.117, which fix the issue.
Which versions are affected by CVE-2026-34486?
13 open source packages ship an affected version, including org.apache.tomcat:tomcat, tomcat and org.apache.tomcat:tomcat-tribes. It affects 7 products.
| Package | Affected | Fixed in |
|---|---|---|
org.apache.tomcat:tomcat Maven | From 10.1.53 | 10.1.54 |
org.apache.tomcat:tomcat Maven | From 10.1.53 | 10.1.54 |
org.apache.tomcat:tomcat Maven | From 11.0.20 | 11.0.21 |
org.apache.tomcat:tomcat Maven | From 11.0.20 | 11.0.21 |
org.apache.tomcat:tomcat Maven | From 9.0.116 | 9.0.117 |
org.apache.tomcat:tomcat Maven | From 9.0.116 | 9.0.117 |
7 more packages
tomcat Bitnami | From 9.0.116 | 9.0.117, 10.1.54, 11.0.21 |
org.apache.tomcat:tomcat-tribes Maven | From 10.1.53 | 10.1.54 |
org.apache.tomcat:tomcat-tribes Maven | From 10.1.53 | 10.1.54 |
org.apache.tomcat:tomcat-tribes Maven | From 11.0.20 | 11.0.21 |
org.apache.tomcat:tomcat-tribes Maven | From 11.0.20 | 11.0.21 |
org.apache.tomcat:tomcat-tribes Maven | From 9.0.116 | 9.0.117 |
org.apache.tomcat:tomcat-tribes Maven | From 9.0.116 | 9.0.117 |
Products include Apache Tomcat, Redhat Enterprise Linux, Redhat Enterprise Linux Els, Redhat Enterprise Linux Eus, Redhat Enterprise Linux Tus, Redhat Enterprise Linux Update Services for Sap Solutions and 1 more.
How do I fix CVE-2026-34486?
Upgrade org.apache.tomcat:tomcat to a fixed version for your release line: 10.1.54, 11.0.21 or 9.0.117. US federal agencies must fix it by 7 Aug 2026.
Is CVE-2026-34486 being exploited?
Yes. Attackers have exploited CVE-2026-34486 in the wild since at least 4 Aug 2026.
Public exploit code: 1 Nuclei template and 5 proofs of concept on GitHub.
Other vulnerabilities in Apache Tomcat
- CVE-2025-24813 Apache Tomcat Path Equivalence
- CVE-2016-8735 Apache Tomcat Remote Code Execution
- CVE-2017-12617 Apache Tomcat Remote Code Execution
- CVE-2017-12615 Apache Tomcat on Windows Remote Code Execution
- CVE-2026-65637 Apache Tomcat: HTTP/2 no-authority bypass of strict SNI validation - CVE-2026-32990 fix incomplete
Sources
Also known as BIT-tomcat-2026-34486, CLSA-2026-1786391661, GHSA-69r9-qgr7-g2wj, ROOT-APP-MAVEN-CVE-2026-34486, UBUNTU-CVE-2026-34486.