What is CVE-2026-34486?

CVE-2026-34486 is a high-severity security vulnerability in org.apache.tomcat:tomcat (maven), affecting versions = 11.0.20. It is fixed in 11.0.21, 10.1.54, 9.0.117.

How severe is CVE-2026-34486?

CVE-2026-34486 has a CVSS score of 7.5 (High). This score reflects the worst-case severity of the vulnerability, not your specific exposure. Whether it represents real risk in your environment depends on whether the vulnerable code is present and reachable.

Which packages are affected by CVE-2026-34486?

org.apache.tomcat:tomcat (maven) versions = 11.0.20; org.apache.tomcat:tomcat-tribes (maven) versions = 11.0.20.

Is there a fix for CVE-2026-34486?

Yes. CVE-2026-34486 is fixed in 11.0.21, 10.1.54, 9.0.117. Upgrade to this version or later.

Is CVE-2026-34486 exploitable, and should I be worried?

Whether CVE-2026-34486 is exploitable in your environment depends on whether the vulnerable code is present and reachable. A CVSS score is a worst-case rating; it does not account for your specific deployment, configuration, or usage patterns. Kodem, an Intelligent Application Security platform, uses runtime intelligence to show which vulnerabilities actually execute in production, so you can focus on the ones that represent real risk.

What actually determines whether CVE-2026-34486 is exploitable, and how bad it is?

Exploitability and impact are not fixed properties of a CVE. They depend on runtime truth: whether the vulnerable code is present, reachable, and actually executes in your application. A high CVSS score on a dependency that never runs is not the same as real risk. Kodem, an Intelligent Application Security platform, uses runtime intelligence to reveal which vulnerabilities actually execute in production, so teams prioritize the ones that genuinely matter.

CVE-2026-34486 in org.apache.tomcat:tomcat | Intelligent Application Security

Q: How do I fix CVE-2026-34486?

Upgrade: org.apache.tomcat:tomcat to 11.0.21 or later, org.apache.tomcat:tomcat to 10.1.54 or later, org.apache.tomcat:tomcat to 9.0.117 or later, org.apache.tomcat:tomcat-tribes to 11.0.21 or later, org.apache.tomcat:tomcat-tribes to 10.1.54 or later, org.apache.tomcat:tomcat-tribes to 9.0.117 or later.

Summary

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.

Impact

CVE-2026-34486 has a CVSS score of 7.5 (High). The vector is network-reachable, no privileges required, and no user interaction. A CVSS score reflects the worst-case severity of the vulnerability, not your specific exposure. Whether this affects your application depends on whether the vulnerable code is present and reachable in your environment. A fixed version is available (11.0.21, 10.1.54, 9.0.117); upgrading removes the vulnerable code path.

Affected versions

org.apache.tomcat:tomcat (= 11.0.20) org.apache.tomcat:tomcat (= 10.1.53) org.apache.tomcat:tomcat (= 9.0.116) org.apache.tomcat:tomcat-tribes (= 11.0.20) org.apache.tomcat:tomcat-tribes (= 10.1.53) org.apache.tomcat:tomcat-tribes (= 9.0.116)

Security releases

org.apache.tomcat:tomcat → 11.0.21 (maven) org.apache.tomcat:tomcat → 10.1.54 (maven) org.apache.tomcat:tomcat → 9.0.117 (maven) org.apache.tomcat:tomcat-tribes → 11.0.21 (maven) org.apache.tomcat:tomcat-tribes → 10.1.54 (maven) org.apache.tomcat:tomcat-tribes → 9.0.117 (maven)

Kodem intelligence

Severity tells you how bad this could be in the worst case. It does not tell you whether you are exposed. Exploitability and impact are functions of runtime truth: whether the vulnerable code is present, reachable, and actually executes in your application. A vulnerable package can sit in your dependency tree and never run.

Kodem, an Intelligent Application Security platform, uses runtime intelligence to reveal which vulnerabilities actually execute in production, so teams prioritize the ones that genuinely matter. Kodem's runtime-powered SCA identifies whether this CVE is reachable in your applications.

See it in your environment

Remediation advice

Upgrade the following packages to resolve this vulnerability:

org.apache.tomcat:tomcat to 11.0.21 or later; org.apache.tomcat:tomcat to 10.1.54 or later; org.apache.tomcat:tomcat to 9.0.117 or later; org.apache.tomcat:tomcat-tribes to 11.0.21 or later; org.apache.tomcat:tomcat-tribes to 10.1.54 or later; org.apache.tomcat:tomcat-tribes to 9.0.117 or later

Kodem Kai can prioritize this vulnerability in your dependency tree and generate a fix recommendation.

Frequently Asked Questions

What is CVE-2026-34486? CVE-2026-34486 is a high-severity security vulnerability in org.apache.tomcat:tomcat (maven), affecting versions = 11.0.20. It is fixed in 11.0.21, 10.1.54, 9.0.117.
How severe is CVE-2026-34486? CVE-2026-34486 has a CVSS score of 7.5 (High). This score reflects the worst-case severity of the vulnerability, not your specific exposure. Whether it represents real risk in your environment depends on whether the vulnerable code is present and reachable.
Which packages are affected by CVE-2026-34486?
- org.apache.tomcat:tomcat (maven) (versions = 11.0.20)
- org.apache.tomcat:tomcat-tribes (maven) (versions = 11.0.20)
Is there a fix for CVE-2026-34486? Yes. CVE-2026-34486 is fixed in 11.0.21, 10.1.54, 9.0.117. Upgrade to this version or later.
Is CVE-2026-34486 exploitable, and should I be worried? Whether CVE-2026-34486 is exploitable in your environment depends on whether the vulnerable code is present and reachable. A CVSS score is a worst-case rating; it does not account for your specific deployment, configuration, or usage patterns. Kodem, an Intelligent Application Security platform, uses runtime intelligence to show which vulnerabilities actually execute in production, so you can focus on the ones that represent real risk. Get a demo
What actually determines whether CVE-2026-34486 is exploitable, and how bad it is? Exploitability and impact are not fixed properties of a CVE. They depend on runtime truth: whether the vulnerable code is present, reachable, and actually executes in your application. A high CVSS score on a dependency that never runs is not the same as real risk. Kodem, an Intelligent Application Security platform, uses runtime intelligence to reveal which vulnerabilities actually execute in production, so teams prioritize the ones that genuinely matter.
How do I fix CVE-2026-34486?
- Upgrade org.apache.tomcat:tomcat to 11.0.21 or later
- Upgrade org.apache.tomcat:tomcat to 10.1.54 or later
- Upgrade org.apache.tomcat:tomcat to 9.0.117 or later
- Upgrade org.apache.tomcat:tomcat-tribes to 11.0.21 or later
- Upgrade org.apache.tomcat:tomcat-tribes to 10.1.54 or later
- Upgrade org.apache.tomcat:tomcat-tribes to 9.0.117 or later

Other vulnerabilities in org.apache.tomcat:tomcat

CVE-2026-41284 CVE-2026-43512 CVE-2026-43513 CVE-2026-43515 CVE-2026-43514