CVE-2026-34486

HIGH7.5

CISA KEV

Published 2026-04-09 · Updated 2026-10-26 · Source security@apache.org

Summary

CVE-2026-34486 is a high-severity (CVSS 7.5) vulnerability in Apache Tomcat. CISA added it to the Known Exploited Vulnerabilities catalog on August 4, 2026, which means exploitation in the wild has been confirmed; US federal agencies had to remediate it by August 7, 2026. CISA does not currently list it as used in ransomware campaigns. Apache has 41 vulnerabilities in the KEV catalog, 8 of them linked to ransomware.

All 41 known-exploited Apache vulnerabilities →

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.

CVSS vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:N

CWE-311CWE-807

CISA Known-Exploited Vulnerability

Product: Apache — Tomcat

Name: Apache Tomcat Missing Encryption of Sensitive Data Vulnerability

Date added: 2026-08-04 · Due: 2026-08-07

Required action: 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.

References

View on NVD

More exploited Apache vulnerabilities

Most recently added to CISA KEV

CVE-2016-3081
Struts — Apache Struts Command Injection Vulnerability
added 2026-10-08
CVE-2026-34197
ActiveMQ — Apache ActiveMQ Improper Input Validation Vulnerability
added 2026-04-16
CVE-2024-38475
HTTP Server — Apache HTTP Server Improper Escaping of Output Vulnerability
added 2025-05-01
CVE-2025-24813
Tomcat — Apache Tomcat Path Equivalence Vulnerability
added 2025-04-01
CVE-2024-45195
OFBiz — Apache OFBiz Forced Browsing Vulnerability
added 2025-02-04
CVE-2024-27348
HugeGraph-Server — Apache HugeGraph-Server Improper Access Control Vulnerability
added 2024-09-18

View all →

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