Vulnerability in Apache Tomcat
CVE-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 9.0.117, which fix the issue.
EPSS: 0.426 (98.6th percentile) — read the EPSS interpretation.
CVSS v3 metric
CVSS v3 base score 7.5 (High). Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:N.
Affected products
- Apache Tomcat — versions 9.0.116, 10.1.53, 11.0.20
- Apache Software Foundation Tomcat — versions 11.0.20, 10.1.53, 9.0.116
- Redhat Enterprise_linux — versions 8.0, 9.0, 10.0
- Redhat Enterprise_linux_els — versions 7.0
- Redhat Enterprise_linux_eus — versions 10.0
- Redhat Enterprise_linux_tus — versions 8.8
- Redhat Enterprise_linux_update_services_for_sap_solutions — versions 8.8, 9.2, 9.4
- Redhat Jboss_web_server — versions 7.0.0
Weakness classification (CWE)
Public proof-of-concept exploits
References
- security@apache.org (vendor-advisory, Mailing List, Vendor Advisory)
- af854a3a-2127-422b-91ae-364da2661108 (Third Party Advisory)
- af854a3a-2127-422b-91ae-364da2661108 (Third Party Advisory, Mitigation)
- 0b0ca135-0b70-47e7-9f44-1890c2a1c46c (Third Party Advisory)
- 0b0ca135-0b70-47e7-9f44-1890c2a1c46c (Third Party Advisory, Issue Tracking)
- 0b0ca135-0b70-47e7-9f44-1890c2a1c46c (Third Party Advisory)
- 0b0ca135-0b70-47e7-9f44-1890c2a1c46c (Third Party Advisory)
- 0b0ca135-0b70-47e7-9f44-1890c2a1c46c (Third Party Advisory)
- 0b0ca135-0b70-47e7-9f44-1890c2a1c46c (Third Party Advisory)
- 0b0ca135-0b70-47e7-9f44-1890c2a1c46c (Third Party Advisory)
Frequently asked questions
- What is CVE-2026-34486?
- CVE-2026-34486 is a high-severity vulnerability in Apache Tomcat, classified under Missing Encryption of Sensitive Data. CVSS score: 7.5/10. Published 2026-04-09.
- How severe is CVE-2026-34486?
- High severity. CVSS v3 base score is 7.5 out of 10.
- Is CVE-2026-34486 known to be exploited?
- 7 public proof-of-concept repositories are indexed. Not currently listed in the CISA KEV catalog.