CVE-2026-34486
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.
How to fix
Apply mitigations in accordance with vendor instructions, ensuring compliance with CISA’s BOD 26-04 Prioritizing Security Updates Based on Risk (see URL in Notes) guidance and CISA’s “Forensics Triage Requirements” (see URL in Notes). Follow applicable BOD 26-04 guidance for cloud services or discontinue use of the product if mitigations are unavailable. Stakeholders are responsible for evaluating each asset's internet exposure and ensuring adherence to BOD 26-04 patching guidelines.
CISA due date: Aug 7, 2026- org.apache.tomcat:tomcat-tribes11.0.21, 10.1.54, 9.0.117 or later
- org.apache.tomcat:tomcat11.0.21, 10.1.54, 9.0.117 or later
- lists.apache.org/thread/9510k5p5zdvt9pkkgtyp85mvwxo2qrly
- access.redhat.com/errata/RHSA-2026:39188
- access.redhat.com/errata/RHSA-2026:38505
- access.redhat.com/errata/RHSA-2026:36787
- access.redhat.com/errata/RHSA-2026:36789
- access.redhat.com/errata/RHSA-2026:36788
- access.redhat.com/errata/RHSA-2026:36790
- access.redhat.com/errata/RHSA-2026:37137
- access.redhat.com/errata/RHSA-2026:37136
- access.redhat.com/errata/RHSA-2026:36878
- access.redhat.com/errata/RHSA-2026:36876
- access.redhat.com/errata/RHSA-2026:36877
Affected products
| Product | Affected versions | Fixed in |
|---|---|---|
| apache tomcat | 9.0.116, 10.1.53, 11.0.20 | — |
| redhat jboss_web_server | 7.0.0 | — |
| redhat enterprise_linux | 8.0, 9.0, 10.0 | — |
| redhat enterprise_linux_els | 7.0 | — |
| redhat enterprise_linux_eus | 10.0 | — |
| redhat enterprise_linux_tus | 8.8 | — |
| redhat enterprise_linux_update_services_for_sap_solutions | 8.8, 9.2, 9.4, 9.6 | — |
| org.apache.tomcat:tomcat-tribesMaven | 11.0.20 ≤ v < 11.0.21, 10.1.53 ≤ v < 10.1.54, 9.0.116 ≤ v < 9.0.117 | 11.0.21, 10.1.54, 9.0.117 |
| org.apache.tomcat:tomcatMaven | 11.0.20 ≤ v < 11.0.21, 10.1.53 ≤ v < 10.1.54, 9.0.116 ≤ v < 9.0.117 | 11.0.21, 10.1.54, 9.0.117 |
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