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Fencer Vulns
high 7.5

CVE-2026-34486 kev in the critical feed json

Apache Tomcat: Fix for CVE-2026-29146 allowed bypass of EncryptInterceptor

published 2026-04-09 7 mo ago modified 2026-10-26 13 d ago also BIT-tomcat-2026-34486 , EUVD-2026-21056 , GHSA-69r9-qgr7-g2wj

cvss
7.5
version 3.1, CNA
cisa kev
Exploited
added 2026-08-04
epss
98.5%
EPSS 98.5% chance of exploitation in 30 days, percentile 99.9%
public exploits
0
none known, plus a Nuclei check

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.

Patch / fix

cisa 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.

  • maven org.apache.tomcat:tomcat-tribes 9.0.117, 10.1.54, 11.0.21
  • maven org.apache.tomcat:tomcat 9.0.117, 10.1.54, 11.0.21
  • bitnami tomcat 9.0.117, 10.1.54, 11.0.21
  • Red Hat Red Hat Enterprise Linux 10 1:9.0.117-2.el10_2, 1:10.1.49-3.el10_2
  • Red Hat Red Hat Enterprise Linux 10.0 Extended Update Support 1:9.0.87-6.el10_0, 1:10.1.36-2.el10_0
  • Red Hat Red Hat Enterprise Linux 7 Extended Lifecycle Support 0:7.0.76-18.el7_9
  • Red Hat Red Hat Enterprise Linux 8 1:9.0.87-2.el8_10
  • Red Hat Red Hat Enterprise Linux 8.8 Telecommunications Update Service 1:9.0.87-2.el8_8
  • Red Hat Red Hat Enterprise Linux 8.8 Update Services for SAP Solutions 1:9.0.87-2.el8_8
  • Red Hat Red Hat Enterprise Linux 9 1:9.0.117-2.el9_8
  • Red Hat Red Hat Enterprise Linux 9.2 Update Services for SAP Solutions 1:9.0.87-2.el9_2
  • Red Hat Red Hat Enterprise Linux 9.4 Update Services for SAP Solutions 1:9.0.87-2.el9_4
  • Red Hat Red Hat Enterprise Linux 9.6 Extended Update Support 1:9.0.87-4.el9_6
  • Red Hat Red Hat JBoss Web Server 7.0 on RHEL 10 0:11.0.21-5.redhat_00004.1.el10jws
  • Red Hat Red Hat JBoss Web Server 7.0 on RHEL 8 0:11.0.21-5.redhat_00004.1.el8jws
  • Red Hat Red Hat JBoss Web Server 7.0 on RHEL 9 0:11.0.21-5.redhat_00004.1.el9jws
  • jws7-tomcat jboss enterprise web server 7.0 11.0.21-5.redhat_00004.1.el10jws
  • jws7-tomcat jboss enterprise web server 7.0 11.0.21-5.redhat_00004.1.el8jws
  • jws7-tomcat jboss enterprise web server 7.0 11.0.21-5.redhat_00004.1.el9jws
  • jws7-tomcat-lib jboss enterprise web server 7.0 11.0.21-5.redhat_00004.1.el10jws
  • jws7-tomcat-lib jboss enterprise web server 7.0 11.0.21-5.redhat_00004.1.el8jws
  • jws7-tomcat-lib jboss enterprise web server 7.0 11.0.21-5.redhat_00004.1.el9jws
  • jws7-tomcat-javadoc jboss enterprise web server 7.0 11.0.21-5.redhat_00004.1.el10jws
  • jws7-tomcat-javadoc jboss enterprise web server 7.0 11.0.21-5.redhat_00004.1.el8jws

red hat advisories RHSA-2026:39188RHSA-2026:38505RHSA-2026:37136RHSA-2026:37137RHSA-2026:36879RHSA-2026:36877

  • tomcat SLES for SAP 15 SP6, SLES for SAP 15 SP5, SLES for SAP 15 SP4 +8 more 9.0.117-150200.105.1
  • tomcat10 SLES for SAP 15 SP6, SLES for SAP 15 SP5, SLES 15 SP6-LTSS +4 more 10.1.54-150200.5.64.1
  • tomcat11 SLES for SAP 15 SP6, SLES 15 SP6-LTSS, SLE Module for Web and Scripting 15 SP7 11.0.21-150600.13.18.1
  • tomcat SLES LTSS Extended Security 12 SP5, SLES 12 SP5-LTSS 9.0.117-3.163.2

suse advisories SUSE-SU-2026:1604-1SUSE-SU-2026:1603-1SUSE-SU-2026:1572-1SUSE-SU-2026:1558-1

  • tomcat openSUSE Leap 16.0 9.0.117-160000.1.1
  • tomcat10 openSUSE Leap 16.0 10.1.54-160000.1.1
  • tomcat11 openSUSE Leap 16.0 11.0.21-160000.1.1
  • tomcat openSUSE Tumbleweed 9.0.117-1.1
  • tomcat10 openSUSE Tumbleweed 10.1.54-1.1
  • tomcat11 openSUSE Tumbleweed 11.0.21-1.1

opensuse advisories openSUSE-SU-2026:20611-1openSUSE-SU-2026:20612-1openSUSE-SU-2026:20595-1openSUSE-SU-2026:10547-1openSUSE-SU-2026:10548-1openSUSE-SU-2026:10549-1

  • tomcat AlmaLinux 8 1:9.0.87-2.el8_10
  • tomcat-lib AlmaLinux 8 1:9.0.87-2.el8_10
  • tomcat-webapps AlmaLinux 8 1:9.0.87-2.el8_10
  • tomcat-el-3.0-api AlmaLinux 8 1:9.0.87-2.el8_10
  • tomcat-docs-webapp AlmaLinux 8 1:9.0.87-2.el8_10
  • tomcat-jsp-2.3-api AlmaLinux 8 1:9.0.87-2.el8_10
  • tomcat-admin-webapps AlmaLinux 8 1:9.0.87-2.el8_10
  • tomcat-servlet-4.0-api AlmaLinux 8 1:9.0.87-2.el8_10

almalinux advisories ALSA-2026:37137ALSA-2026:36788ALSA-2026:36790ALSA-2026:36879

  • tomcat Rocky Linux 10 1:10.1.49-3.el10_2
  • tomcat9 Rocky Linux 10 1:9.0.117-2.el10_2
  • tomcat Rocky Linux 9 1:9.0.117-2.el9_8
  • tomcat Rocky Linux 8 1:9.0.87-2.el8_10

rocky linux advisories RLSA-2026:36788RLSA-2026:36790RLSA-2026:36879RLSA-2026:37137

Vendor advisories

What the vendors themselves say about their products: affected, fixed or not affected, and what to do.

red hat product security vex CVE-2026-34486 updated cvss 7.5

Apache Tomcat: Apache Tomcat: Missing Encryption of Sensitive Data due to EncryptInterceptor bypass

  • Red Hat Enterprise Linux 6 tomcat6, tomcat6-lib, tomcat6-log4j, tomcat6-javadoc, tomcat6-webapps, tomcat6-el-2.1-api, +4 more
    affected: workaround, no fix planned “Out of support scope”
  • Red Hat Enterprise Linux 9 pki-servlet-engine, pki-servlet-4.0-api
    affected: workaround, no fix planned “Will not fix”
  • Red Hat Enterprise Linux AppStream (v. 8) tomcat 9.0.87-2.el8_10, tomcat-lib 9.0.87-2.el8_10, tomcat-webapps 9.0.87-2.el8_10, tomcat-el-3.0-api 9.0.87-2.el8_10, tomcat-docs-webapp 9.0.87-2.el8_10, tomcat-jsp-2.3-api 9.0.87-2.el8_10, +2 more
    fixed: vendor fix RHSA-2026:37137
  • Red Hat Enterprise Linux AppStream (v. 9) tomcat 9.0.117-2.el9_8, tomcat-lib 9.0.117-2.el9_8, tomcat-webapps 9.0.117-2.el9_8, tomcat-el-3.0-api 9.0.117-2.el9_8, tomcat-docs-webapp 9.0.117-2.el9_8, tomcat-jsp-2.3-api 9.0.117-2.el9_8, +2 more
    fixed: vendor fix RHSA-2026:36879
  • Red Hat Enterprise Linux AppStream (v. 10) tomcat 10.1.49-3.el10_2, tomcat9 9.0.117-2.el10_2, tomcat-lib 10.1.49-3.el10_2, tomcat9-lib 9.0.117-2.el10_2, tomcat-webapps 10.1.49-3.el10_2, tomcat9-webapps 9.0.117-2.el10_2, +10 more
    fixed: vendor fix RHSA-2026:36788
  • Red Hat Enterprise Linux AppStream E4S (v.8.8) tomcat 9.0.87-2.el8_8, tomcat-lib 9.0.87-2.el8_8, tomcat-webapps 9.0.87-2.el8_8, tomcat-el-3.0-api 9.0.87-2.el8_8, tomcat-docs-webapp 9.0.87-2.el8_8, tomcat-jsp-2.3-api 9.0.87-2.el8_8, +2 more
    fixed: vendor fix RHSA-2026:37136
  • Red Hat Enterprise Linux AppStream E4S (v.9.2) tomcat 9.0.87-2.el9_2, tomcat-lib 9.0.87-2.el9_2, tomcat-webapps 9.0.87-2.el9_2, tomcat-el-3.0-api 9.0.87-2.el9_2, tomcat-docs-webapp 9.0.87-2.el9_2, tomcat-jsp-2.3-api 9.0.87-2.el9_2, +2 more
    fixed: vendor fix RHSA-2026:36878
  • Red Hat Enterprise Linux AppStream E4S (v.9.4) tomcat 9.0.87-2.el9_4, tomcat-lib 9.0.87-2.el9_4, tomcat-webapps 9.0.87-2.el9_4, tomcat-el-3.0-api 9.0.87-2.el9_4, tomcat-docs-webapp 9.0.87-2.el9_4, tomcat-jsp-2.3-api 9.0.87-2.el9_4, +2 more
    fixed: vendor fix RHSA-2026:36876
show 8 more
  • Red Hat Enterprise Linux AppStream EUS (v. 10.0) tomcat 10.1.36-2.el10_0, tomcat9 9.0.87-6.el10_0, tomcat-lib 10.1.36-2.el10_0, tomcat9-lib 9.0.87-6.el10_0, tomcat-webapps 10.1.36-2.el10_0, tomcat9-webapps 9.0.87-6.el10_0, +10 more
    fixed: vendor fix RHSA-2026:36787
  • Red Hat Enterprise Linux AppStream EUS (v.9.6) tomcat 9.0.87-4.el9_6, tomcat-lib 9.0.87-4.el9_6, tomcat-webapps 9.0.87-4.el9_6, tomcat-el-3.0-api 9.0.87-4.el9_6, tomcat-docs-webapp 9.0.87-4.el9_6, tomcat-jsp-2.3-api 9.0.87-4.el9_6, +2 more
    fixed: vendor fix RHSA-2026:36877
  • Red Hat Enterprise Linux AppStream TUS (v.8.8) tomcat 9.0.87-2.el8_8, tomcat-lib 9.0.87-2.el8_8, tomcat-webapps 9.0.87-2.el8_8, tomcat-el-3.0-api 9.0.87-2.el8_8, tomcat-docs-webapp 9.0.87-2.el8_8, tomcat-jsp-2.3-api 9.0.87-2.el8_8, +2 more
    fixed: vendor fix RHSA-2026:37136
  • Red Hat Enterprise Linux Server (v. 7 ELS) tomcat 7.0.76-18.el7_9, tomcat-lib 7.0.76-18.el7_9, tomcat-webapps 7.0.76-18.el7_9, tomcat-el-2.2-api 7.0.76-18.el7_9, tomcat-jsp-2.2-api 7.0.76-18.el7_9, tomcat-admin-webapps 7.0.76-18.el7_9, +1 more Red Hat Enterprise Linux Server Optional (v. 7 ELS) tomcat 7.0.76-18.el7_9, tomcat-lib 7.0.76-18.el7_9, tomcat-jsvc 7.0.76-18.el7_9, tomcat-javadoc 7.0.76-18.el7_9, tomcat-webapps 7.0.76-18.el7_9, tomcat-el-2.2-api 7.0.76-18.el7_9, +3 more
    fixed: vendor fix RHSA-2026:38505
  • Red Hat JBoss Web Server 7.0 on RHEL 8 jws7-tomcat 11.0.21-5.redhat_00004.1.el8jws, jws7-tomcat-lib 11.0.21-5.redhat_00004.1.el8jws, jws7-tomcat-javadoc 11.0.21-5.redhat_00004.1.el8jws, jws7-tomcat-selinux 11.0.21-5.redhat_00004.1.el8jws, jws7-tomcat-webapps 11.0.21-5.redhat_00004.1.el8jws, jws7-tomcat-el-5.0-api 11.0.21-5.redhat_00004.1.el8jws, +4 more Red Hat JBoss Web Server 7.0 on RHEL 9 jws7-tomcat 11.0.21-5.redhat_00004.1.el9jws, jws7-tomcat-lib 11.0.21-5.redhat_00004.1.el9jws, jws7-tomcat-javadoc 11.0.21-5.redhat_00004.1.el9jws, jws7-tomcat-selinux 11.0.21-5.redhat_00004.1.el9jws, jws7-tomcat-webapps 11.0.21-5.redhat_00004.1.el9jws, jws7-tomcat-el-5.0-api 11.0.21-5.redhat_00004.1.el9jws, +4 more Red Hat JBoss Web Server 7.0 on RHEL 10 jws7-tomcat 11.0.21-5.redhat_00004.1.el10jws, jws7-tomcat-lib 11.0.21-5.redhat_00004.1.el10jws, jws7-tomcat-javadoc 11.0.21-5.redhat_00004.1.el10jws, jws7-tomcat-selinux 11.0.21-5.redhat_00004.1.el10jws, jws7-tomcat-webapps 11.0.21-5.redhat_00004.1.el10jws, jws7-tomcat-el-5.0-api 11.0.21-5.redhat_00004.1.el10jws, +4 more
    fixed: vendor fix RHSA-2026:39188
  • Red Hat JBoss Web Server 7.0.0
    fixed: vendor fix RHSA-2026:39189
  • Red Hat Enterprise Linux 8 pki-servlet-engine, pki-servlet-4.0-api
    not affected: component not present
  • Red Hat JBoss Web Server 5 tomcat Red Hat JBoss Web Server 6 tomcat Red Hat JBoss Web Server 7.0 on RHEL 8 jws7-build 1-1.el8jws, jws7-runtime 1-1.el8jws, jws7-javapackages-tools 6.0.0-1.el8jws, jws7-ecj 4.38.0-1.redhat_00001.1.el8jws, jws7-python3-javapackages 6.0.0-1.el8jws, jws7-tomcat-native 1.3.7-2.redhat_2.el8jws, +6 more Red Hat JBoss Web Server 7.0 on RHEL 9 jws7-build 1-1.el9jws, jws7-runtime 1-1.el9jws, jws7-javapackages-tools 6.0.0-1.el9jws, jws7-ecj 4.38.0-1.redhat_00001.1.el9jws, jws7-python3-javapackages 6.0.0-1.el9jws, jws7-tomcat-native 1.3.7-2.redhat_2.el9jws, +6 more Red Hat JBoss Web Server 7.0 on RHEL 10 jws7-build 1-1.el10jws, jws7-runtime 1-1.el10jws, jws7-javapackages-tools 6.0.0-1.el10jws, jws7-ecj 4.38.0-1.redhat_00001.1.el10jws, jws7-python3-javapackages 6.0.0-1.el10jws, jws7-tomcat-native 1.3.7-2.redhat_2.el10jws, +6 more
    not affected: vulnerable code not present

Red Hat CSAF VEX © Red Hat, Inc., from https://security.access.redhat.com/data/csaf/v2/vex/; changed: reduced to product statuses and remediations. CC BY 4.0 · csaf

Timeline

  1. Published
  2. Added to CISA KEV
  3. CISA patch deadline
  4. CISA SSVC: exploitation active

Known exploited

Added
3 mo ago
Patch by
2026-08-07 (3 mo ago)
Ransomware
Not known
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.
Vendor, product
Apache, Tomcat
CISA name
Apache Tomcat Missing Encryption of Sensitive Data Vulnerability

CISA SSVC

Exploitation
Active, exploited in the wild
Automatable
yes
Technical impact
partial
Assessed
3 mo ago

Exploit prediction

98.50% chance of exploitation in the next 30 days, higher than 99.9% of all scored CVEs (FIRST EPSS, 2026-11-08).

Exploits and checks

  • Nuclei template Apache Tomcat Tribes EncryptInterceptor Bypass - Remote Code Execution nuclei detection template

CVSS scores

assigned by version score vector
CISA ADP 3.1 7.5 CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:N
GitHub 3.1 7.5 CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:N
CNA 3.1 7.5 CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:N
OSV 3.1 7.5 CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:N

Affected packages

ecosystem package affected fixed in
maven org.apache.tomcat:tomcat-tribes
>=11.0.20, <11.0.21
>=10.1.53, <10.1.54
>=9.0.116, <9.0.117
11.0.21
10.1.54
9.0.117
maven org.apache.tomcat:tomcat
>=11.0.20, <11.0.21
>=10.1.53, <10.1.54
>=9.0.116, <9.0.117
11.0.21
10.1.54
9.0.117
bitnami tomcat
>=9.0.116, <9.0.117
>=10.1.53, <10.1.54
>=11.0.20, <11.0.21
9.0.117
10.1.54
11.0.21

Affected products

  • Apache Software Foundation Apache Tomcat
  • Red Hat Red Hat Enterprise Linux 10
  • Red Hat Red Hat Enterprise Linux 10.0 Extended Update Support
  • Red Hat Red Hat Enterprise Linux 7 Extended Lifecycle Support
  • Red Hat Red Hat Enterprise Linux 8
  • Red Hat Red Hat Enterprise Linux 8.8 Telecommunications Update Service
  • Red Hat Red Hat Enterprise Linux 8.8 Update Services for SAP Solutions
  • Red Hat Red Hat Enterprise Linux 9
  • Red Hat Red Hat Enterprise Linux 9.2 Update Services for SAP Solutions
  • Red Hat Red Hat Enterprise Linux 9.4 Update Services for SAP Solutions
  • Red Hat Red Hat Enterprise Linux 9.6 Extended Update Support
  • Red Hat Red Hat JBoss Web Server 7.0.0
  • Red Hat Red Hat JBoss Web Server 7.0 on RHEL 10
  • Red Hat Red Hat JBoss Web Server 7.0 on RHEL 8
  • Red Hat Red Hat JBoss Web Server 7.0 on RHEL 9
  • Red Hat Red Hat Enterprise Linux 6
  • Red Hat Red Hat JBoss Web Server 5
  • Red Hat Red Hat JBoss Web Server 6

Classification

Weakness
  • CWE-311 Missing Encryption of Sensitive Data
  • CWE-807 Reliance on Untrusted Inputs in a Security Decision

References

Sources

Fencer Vulns keeps one entry per vulnerability: the CVE id wins, then GHSA, and records that alias each other are merged, except that two CVEs always keep separate entries. The same data is available as JSON.

CPEs and fixed versions use Anchore's correction of NVD's data: Added CPE configurations because not yet analyzed by NVD.