CVE-2026-34486
HIGH severity · CVSS 7.5 · CWE-311 · actively exploited (CISA KEV)
7.5CVSS HIGH exploited
Actively exploited in the wild (CISA Known Exploited Vulnerabilities).
Added to KEV 2026-08-04. US federal agencies must patch by 2026-08-07.
Summary
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.
Impact & exploitability
Attack vectorNetwork
Attack complexityLow
Privileges requiredNone
User interactionNone
Confidentiality impactHigh
Integrity impactNone
Availability impactNone
Exploit probability (EPSS)81%
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:N
Affected products we track (2)
Recommendation
This vulnerability is being actively exploited in the wild — patch affected products urgently. Open any affected product above for its exact safe version.
Additional information
- NVD record
- https://lists.apache.org/thread/9510k5p5zdvt9pkkgtyp85mvwxo2qrlyAdvisory
- https://www.vicarius.io/vsociety/posts/cve-2026-34486-mitigation-script-rce-on-apache-tomcatAdvisory
- https://www.vicarius.io/vsociety/posts/cve-2026-34486-detection-script-rce-on-apache-tomcatAdvisory
- https://access.redhat.com/errata/RHSA-2026:36787Advisory
- https://access.redhat.com/errata/RHSA-2026:36788Advisory
- https://access.redhat.com/errata/RHSA-2026:36789Advisory
- https://access.redhat.com/errata/RHSA-2026:36790Advisory
- https://access.redhat.com/errata/RHSA-2026:36876Advisory