CVE-2026-34486Apache Tomcat: Fix for CVE-2026-29146 allowed bypass of EncryptInterceptor
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.
Overview
Severity
| Score | Severity | Version | Vector String |
|---|---|---|---|
| 7.5 | HIGH | 3.1CISA-ADP | CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:N |
CISA required action
⚡ Known exploited · remediation due Aug 7, 2026
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.
Details
- CVE ID
- CVE-2026-34486
- Status
- Analyzed
- Assigner (CNA)
- apache
- Published
- Apr 9, 2026
- Last modified
- 2026-10-26 22:10 UTC
Affected Products
As published by the CNA in the CVE record.
Apache Software FoundationApache Tomcat3 version ranges
- 11.0.20
- 10.1.53
- 9.0.116
References
- lists.apache.org https://lists.apache.org/thread/9510k5p5zdvt9pkkgtyp85mvwxo2qrly
- vicarius.io https://www.vicarius.io/vsociety/posts/cve-2026-34486-detection-script-rce-on-apache-tomcat
- vicarius.io https://www.vicarius.io/vsociety/posts/cve-2026-34486-mitigation-script-rce-on-apache-tomcat
- access.redhat.com https://access.redhat.com/errata/RHSA-2026:36787
- access.redhat.com https://access.redhat.com/errata/RHSA-2026:36788
- access.redhat.com https://access.redhat.com/errata/RHSA-2026:36789
- access.redhat.com https://access.redhat.com/errata/RHSA-2026:36790
- access.redhat.com https://access.redhat.com/errata/RHSA-2026:36876
- access.redhat.com https://access.redhat.com/errata/RHSA-2026:36877
- access.redhat.com https://access.redhat.com/errata/RHSA-2026:36878
- access.redhat.com https://access.redhat.com/errata/RHSA-2026:36879
- access.redhat.com https://access.redhat.com/errata/RHSA-2026:37136
- access.redhat.com https://access.redhat.com/errata/RHSA-2026:37137
- access.redhat.com https://access.redhat.com/errata/RHSA-2026:38505
- access.redhat.com https://access.redhat.com/errata/RHSA-2026:39188
- access.redhat.com https://access.redhat.com/errata/RHSA-2026:39189
- access.redhat.com https://access.redhat.com/security/cve/CVE-2026-34486
- bugzilla.redhat.com https://bugzilla.redhat.com/show_bug.cgi?id=2457027
- security.access.redhat.com https://security.access.redhat.com/data/csaf/v2/vex/2026/cve-2026-34486.json
- socradar.io https://socradar.io/blog/snowlight-government-chinese-campaign/
- cisa.gov https://www.cisa.gov/known-exploited-vulnerabilities-catalog?field_cve=CVE-2026-34486