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High 7.5Known exploited (CISA KEV)Published Apr 9, 2026
CVE-2026-34486Apache Tomcat: Fix for CVE-2026-29146 allowed bypass of EncryptInterceptor
Updated under an hour ago ()
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It affects Apache Software Foundation Apache Tomcat and 12 other products. Add what you run to find out whether that includes you.
CISA lists it as known exploited since Aug 4, 2026; federal agencies had to remediate by Aug 7, 2026. Treat that date as your deadline.
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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
- 7.5 HIGH (v3.1, CISA ADP)CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:N
- Weakness (CWE)
- CWE-311, CWE-807
- Known exploited
- Added to CISA KEV Aug 4, 2026; federal remediation due Aug 7, 2026Apply 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.
- EPSS (exploitation in the next 30 days)
- 6.56% (percentile 94)
- Assigned by
- apache
- NVD analysis
- Analyzed
- Record last updated
- Sep 21, 2026
- First seen by InfoSec Signals
- Oct 9, 2026
Affected products
Apache Software Foundation Apache Tomcat apache_software_foundation:apache_tomcat (from the name) | 11.0.20; 10.1.53; 9.0.116 | CNA record |
Red Hat Red Hat Enterprise Linux 10 redhat:enterprise_linux | from 1:10.1.49-3.el10_2 not affected | CISA ADP |
Red Hat Red Hat Enterprise Linux 10.0 Extended Update Support redhat:enterprise_linux_eus | from 1:10.1.36-2.el10_0 not affected | CISA ADP |
from 0:7.0.76-18.el7_9 not affected | CISA ADP | |
from 1:9.0.87-2.el8_8 not affected | CISA ADP | |
from 1:9.0.87-2.el8_8 not affected | CISA ADP | |
Red Hat Red Hat Enterprise Linux 9.6 Extended Update Support redhat:rhel_eus | from 1:9.0.87-4.el9_6 not affected | CISA ADP |
Red Hat Red Hat JBoss Web Server 7.0.0 redhat:jboss_enterprise_web_server | 7.0 | CISA ADP |
apache tomcat apache:tomcat | 9.0.116; 10.1.53; 11.0.20 | NVD |
redhat jboss_web_server redhat:jboss_web_server | 7.0.0 | NVD |
redhat enterprise_linux redhat:enterprise_linux | 8.0; 9.0; 10.0 | NVD |
redhat enterprise_linux_els redhat:enterprise_linux_els | 7.0 | NVD |
redhat enterprise_linux_eus redhat:enterprise_linux_eus | 10.0 | NVD |
redhat enterprise_linux_tus redhat:enterprise_linux_tus | 8.8 | NVD |
redhat enterprise_linux_update_services_for_sap_solutions redhat:enterprise_linux_update_services_for_sap_solutions | 8.8; 9.2; 9.4; 9.6 | NVD |
References
- https://lists.apache.org/thread/9510k5p5zdvt9pkkgtyp85mvwxo2qrlyvendor-advisory, mailing-list
- https://www.vicarius.io/vsociety/posts/cve-2026-34486-detection-script-rce-on-apache-tomcatthird-party-advisory
- https://www.vicarius.io/vsociety/posts/cve-2026-34486-mitigation-script-rce-on-apache-tomcatmitigation, third-party-advisory
- https://access.redhat.com/errata/RHSA-2026:36787third-party-advisory
- https://access.redhat.com/errata/RHSA-2026:36788third-party-advisory
- https://access.redhat.com/errata/RHSA-2026:36789third-party-advisory
- https://access.redhat.com/errata/RHSA-2026:36790third-party-advisory
- https://access.redhat.com/errata/RHSA-2026:36876third-party-advisory
- https://access.redhat.com/errata/RHSA-2026:36877third-party-advisory
- https://access.redhat.com/errata/RHSA-2026:36878third-party-advisory
- https://access.redhat.com/errata/RHSA-2026:36879third-party-advisory
- https://access.redhat.com/errata/RHSA-2026:37136third-party-advisory
- https://access.redhat.com/errata/RHSA-2026:37137third-party-advisory
- https://access.redhat.com/errata/RHSA-2026:38505third-party-advisory
- https://access.redhat.com/errata/RHSA-2026:39188third-party-advisory
- https://access.redhat.com/errata/RHSA-2026:39189third-party-advisory
- https://access.redhat.com/security/cve/CVE-2026-34486third-party-advisory
- https://bugzilla.redhat.com/show_bug.cgi?id=2457027issue-tracking, third-party-advisory
- https://security.access.redhat.com/data/csaf/v2/vex/2026/cve-2026-34486.jsonthird-party-advisory
- https://socradar.io/blog/snowlight-government-chinese-campaign/third-party-advisory
- https://www.cisa.gov/known-exploited-vulnerabilities-catalog?field_cve=CVE-2026-34486us-government-resource
The CVE record on cve.org NVD's entry
The CVE record is authoritative. Products marked “from the name” were identified from the CNA's free-text names, not a CPE, and are matched less certainly. This product uses the NVD API but is not endorsed or certified by the NVD.