Apache Tomcat Missing Encryption of Sensitive Data Vulnerability
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.
MANARTECH SECURITY ALERT
Apache Tomcat Missing Encryption of Sensitive Data Vulnerability
CVE Numbers
CVE-2026-34486
Affected Product
Tomcat — Apache
Threat 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.
Severity Scale
CRITICALHIGHMEDIUMLOW
Severity
HIGH
Affected Versions
To be reviewed
Recommended Mitigation
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.
Reference Links
https://lists.apache.org/thread/9510k5p5zdvt9pkkgtyp85mvwxo2qrly
https://www.vicarius.io/vsociety/posts/cve-2026-34486-detection-script-rce-on-apache-tomcat
https://www.vicarius.io/vsociety/posts/cve-2026-34486-mitigation-script-rce-on-apache-tomcat
https://access.redhat.com/errata/RHSA-2026:36787
https://access.redhat.com/errata/RHSA-2026:36788
https://access.redhat.com/errata/RHSA-2026:36789
https://access.redhat.com/errata/RHSA-2026:36790
https://access.redhat.com/errata/RHSA-2026:36876
https://access.redhat.com/errata/RHSA-2026:36877
https://access.redhat.com/errata/RHSA-2026:36878
https://access.redhat.com/errata/RHSA-2026:36879
https://access.redhat.com/errata/RHSA-2026:37136
https://access.redhat.com/errata/RHSA-2026:37137
https://access.redhat.com/errata/RHSA-2026:38505
https://access.redhat.com/errata/RHSA-2026:39188
https://access.redhat.com/errata/RHSA-2026:39189
https://access.redhat.com/security/cve/CVE-2026-34486
https://bugzilla.redhat.com/show_bug.cgi?id=2457027
https://security.access.redhat.com/data/csaf/v2/vex/2026/cve-2026-34486.json
https://socradar.io/blog/snowlight-government-chinese-campaign/
https://www.cisa.gov/known-exploited-vulnerabilities-catalog?field_cve=CVE-2026-34486
https://nvd.nist.gov/vuln/detail/CVE-2026-34486
