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.
What happened
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.
CISA lists it as exploited, added 04 Aug 2026.
Does it affect you
Names Red Hat Enterprise Linux. Enter the product and version you run to place it against the affected range the vendor published.
What to do
- Follow the vendor advisory for the fixed release and any interim mitigation.
lists.apache.org - Follow the vendor advisory for the fixed release and any interim mitigation.
vicarius.io - 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.gov
CISA’s notes for this entry:
- lists.apache.org/thread/9510k5p5zdvt9pkkgtyp85mvwxo2qrly
- BOD 26-04: cisa.gov/news-events/directives/bod-26-04-prioritizing-security-updates-based-risk
- Forensics Triage Requirements: cisa.gov/news-events/directives/bod-26-04-implementation-guidance-prioritizing-security-updates-based-risk
- nvd.nist.gov/vuln/detail/CVE-2026-34486
Affected, as published to NVD
- rhel
- Red Hat Enterprise Linux: exactly 8.0
The record
- NVD status
- Analyzed
- Published
- 09 Apr 2026, last modified 21 Sep 2026 (NVD)
- Severity
- CVSS 3.1 base score 7.5, High — computed here from the vector; NVD states 7.5.
- Vector
- CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:N
- Weakness
- CWE-311 Missing Encryption of Sensitive Data, CWE-807 Reliance on Untrusted Inputs in a Security Decision (NVD; names by MITRE)
- Exploitation
- Listed in CISA’s Known Exploited Vulnerabilities catalogue since 04 Aug 2026; federal remediation due 07 Aug 2026. CISA entry
- Exploit probability
- EPSS 6.6%, 94th percentile — FIRST, scored 23 Oct 2026. FIRST EPSS
- Vendor
- Apache · Tomcat (CISA)
References on the NVD record
- lists.apache.org/thread/9510k5p5zdvt9pkkgtyp85mvwxo2qrlyMailing ListVendor Advisory
- vicarius.io/vsociety/posts/cve-2026-34486-mitigation-script-rce-on-apache-tomcatMitigationThird Party Advisory
- vicarius.io/vsociety/posts/cve-2026-34486-detection-script-rce-on-apache-tomcatThird Party Advisory
- access.redhat.com/errata/RHSA-2026:36787Third Party Advisory
- access.redhat.com/errata/RHSA-2026:36788Third Party Advisory
- access.redhat.com/errata/RHSA-2026:36789Third Party Advisory
- access.redhat.com/errata/RHSA-2026:36790Third Party Advisory
- access.redhat.com/errata/RHSA-2026:36876Third Party Advisory
- access.redhat.com/errata/RHSA-2026:36877Third Party Advisory
- access.redhat.com/errata/RHSA-2026:36878Third Party Advisory
- access.redhat.com/errata/RHSA-2026:36879Third Party Advisory
- access.redhat.com/errata/RHSA-2026:37136Third Party Advisory
- access.redhat.com/errata/RHSA-2026:37137Third Party Advisory
- access.redhat.com/errata/RHSA-2026:38505Third Party Advisory
- access.redhat.com/errata/RHSA-2026:39188Third Party Advisory
- access.redhat.com/errata/RHSA-2026:39189Third Party Advisory
- access.redhat.com/security/cve/CVE-2026-34486Third Party Advisory
- bugzilla.redhat.com/show_bug.cgi?id=2457027Issue TrackingThird Party Advisory
- security.access.redhat.com/data/csaf/v2/vex/2026/cve-2026-34486.jsonThird Party Advisory
- socradar.io/blog/snowlight-government-chinese-campaign/Third Party Advisory
Sources
The verdict above is computed from the products and versions you entered and the affected ranges the vendor published to NVD. It does not inspect your environment, and this site never reports a product as unaffected: why.