Apache Tomcat Missing Encryption of Sensitive Data Vulnerability

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• cpe apache/tomcat10.1.53
• cpe apache/tomcat11.0.20
• cpe apache/tomcat9.0.116
• cpe redhat/enterprise linux10.0
• cpe redhat/enterprise linux8.0
• cpe redhat/enterprise linux9.0
• cpe redhat/enterprise linux els7.0
• cpe redhat/jboss web server7.0.0
• vendor Apache Tomcatversion unspecified

How to fix CVE-2026-34486

• Recommended remediation

  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.

• Official advisories

  • CISA KEV · cisa.gov
  • CVE.org · cve.org
  • FIRST EPSS · first.org
  • NIST NVD · nvd.nist.gov
  • VulnCheck KEV · vulncheck.com

What to do

Three questions, each answered from this record only. Confirm the vendor advisory before you patch.

Code

The project this record applies to. Exploit listings stay in References.

No public source repository is identified for this product.

Timeline

Detection, updates, and resolution for this record.

1. Apr 9, 2026 · Catalog

   Detected

   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.

2. Aug 4, 2026 · CISA KEV

   Known exploited

   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

3. Aug 7, 2026 · CISA KEV

   Remediation due

   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

4. Sep 21, 2026 · Catalog

   Updated

   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.

5. Sep 21, 2026 · NIST NVD

   Updated

   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.

Sources

• CISA KEVConfirmed exploitationCVE-2026-34486

  Apache Tomcat contains a missing encryption of sensitive data vulnerability that allows the bypass of the EncryptInterceptor. This vulnerability can be chained with CVE‑2025‑24813.

  cisa.gov
• CVE.orgVulnerability recordCVE-2026-34486

  Official CVE identifier

  cve.org
• FIRST EPSSExploitation probabilityCVE-2026-34486

  30-day exploitation probability 6.6%

  first.org
• NIST NVDVulnerability recordCVE-2026-34486

  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.

  nvd.nist.gov
• VulnCheck KEVConfirmed exploitationCVE-2026-34486

  Apache Tomcat contains a missing encryption of sensitive data vulnerability that allows the bypass of the EncryptInterceptor. This vulnerability can be chained with CVE‑2025‑24813.

  vulncheck.com

References

• Third Party Advisory · access.redhat.com
• Third Party Advisory · access.redhat.com
• Third Party Advisory · access.redhat.com
• Third Party Advisory · access.redhat.com
• Third Party Advisory · access.redhat.com
• VulnCheck exploitation evidence · cydome.io
• CISA note · lists.apache.org
• CISA note · nvd.nist.gov
• VulnCheck exploitation evidence · previdian.com
• VulnCheck exploitation evidence · socradar.io
• VulnCheck exploitation evidence · unit42.paloaltonetworks.com
• CISA note · cisa.gov
• CISA note · cisa.gov
• VulnCheck exploitation evidence · cisa.gov
• VulnCheck exploitation evidence · hkcert.org
• Third Party Advisory · vicarius.io
• Mitigation · vicarius.io

Freshness

Last verified in this catalog Oct 18, 2026. Significant claims (KEV, EPSS, CVSS, affected ranges) come from the source rows above — open the original publisher for the authoritative advisory.