CVE-2026-34486
HighExploitedPublic exploitApache Tomcat Missing Encryption of Sensitive Data vulnerability
Published Apr 9, 2026 · Updated Sep 23, 2026 · Also known as BIT-tomcat-2026-34486, GHSA-69r9-qgr7-g2wj, ROOT-APP-MAVEN-CVE-2026-34486, UBUNTU-CVE-2026-34486
Key Facts
Patch immediately- CVE-2026-34486 is a high-severity vulnerability (CVSS 7.5 v3.1) affecting Tomcat (Apache), Jboss Web Server (Redhat), Enterprise Linux (Redhat) and 22 more products.
- It is exploited in the wild, listed in CISA KEV, Industry KEV feed, CIRCL KEV, ENISA EUVD since Jul 30, 2026. Public exploit code is available.
- EPSS estimates a 6.6% probability of exploitation in the next 30 days.
- Fixed versions are available, including io.root.org.apache.tomcat.embed:tomcat-embed-core 11.0.20-root.io.1, io.root.org.apache.tomcat.embed:tomcat-embed-core 11.0.20-root.io.10, io.root.org.apache.tomcat.embed:tomcat-embed-core 11.0.20-root.io.11.
- Brandefense priority: patch immediately, because it is listed as exploited in the wild.
CVSS v3.1
7.5
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:N
EPSS (30-day exploit likelihood)
6.6%
Higher than 93.7% of all scored CVEs
Exploited in the wild
Yes
4 catalog listings
Public exploit code
Available
Proof-of-concept or weaponized module
Get the full CVE-2026-34486 brief as a PDF
Every affected product and fixed release, exploitation status and a first 24 hours response checklist, emailed within minutes.
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.
Known-Exploited Catalog Listings
| Catalog | Added | Remediation due | Ransomware use |
|---|---|---|---|
| CISA KEV | Aug 4, 2026 | Aug 7, 2026 | Not reported |
| Industry KEV feed | Jul 30, 2026 | Aug 7, 2026 | Not reported |
| CIRCL KEV | Aug 4, 2026 | Aug 7, 2026 | Not reported |
| ENISA EUVD | Aug 4, 2026 | n/a | Not reported |
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.
Affected Products
382 affected entries in total| Product | Affected versions | Fixed in |
|---|---|---|
| TomcatApache | 10.1.53, 11.0.20, 9.0.116, >= 9.0.116, >= 11.0.20 | 9.0.117 |
| Jboss Web ServerRedhat | 7.0.0 | n/a |
| Enterprise LinuxRedhat | 10.0, 8.0, 9.0 | n/a |
| Enterprise Linux ElsRedhat | 7.0 | n/a |
| Enterprise Linux EusRedhat | 10.0 | n/a |
Patched Releases
io.root.org.apache.tomcat.embed:tomcat-embed-core
11.0.20-root.io.1, 11.0.20-root.io.10, 11.0.20-root.io.11, 11.0.20-root.io.12, 11.0.20-root.io.14, 11.0.20-root.io.15, 11.0.20-root.io.16, 11.0.20-root.io.6, 11.0.20-root.io.7, 11.0.20-root.io.8, 11.0.20-root.io.9
jws7-tomcat
0:11.0.21-5.redhat_00004.1.el10jws, 0:11.0.21-5.redhat_00004.1.el8jws, 0:11.0.21-5.redhat_00004.1.el9jws
nacos
3.2.0-r6
ontop
5.5.0-r8
ontop-fips
5.5.0-r4
org.apache.tomcat:tomcat
10.1.54, 11.0.21, 9.0.117
org.apache.tomcat:tomcat-tribes
10.1.54, 11.0.21, 9.0.117
org.apache.tomcat.embed:tomcat-embed-core
11.0.20-aikido.12, 11.0.20-aikido.14, 11.0.20-aikido.15, 11.0.20-aikido.16
Tomcat
0:7.0.76-18.el7_9, 1:10.1.36-2.el10_0, 1:10.1.49-3.el10_2, 1:10.1.49-3.el10_2.alma.1, 1:9.0.117-2.el9_8, 1:9.0.87-2.el8_10, 1:9.0.87-2.el8_8, 10.1.54, 11.0.21, 9.0.117, 9.0.117-1.1, 9.0.117-150200.105.1, 9.0.117-160000.1.1, 9.0.117-3.163.2
tomcat-admin-webapps
1:10.1.49-3.el10_2, 1:9.0.117-2.el9_8, 1:9.0.87-2.el8_10, 9.0.117-1.1, 9.0.117-150200.105.1, 9.0.117-160000.1.1, 9.0.117-3.163.2
tomcat-docs-webapp
1:10.1.49-3.el10_2, 1:9.0.117-2.el9_8, 1:9.0.87-2.el8_10, 9.0.117-1.1, 9.0.117-160000.1.1, 9.0.117-3.163.2
tomcat-el-3_0-api
9.0.117-1.1, 9.0.117-150200.105.1, 9.0.117-160000.1.1, 9.0.117-3.163.2
tomcat-el-3.0-api
1:9.0.117-2.el9_8, 1:9.0.87-2.el8_10
tomcat-el-5.0-api
1:10.1.49-3.el10_2
tomcat-embed
9.0.117-1.1, 9.0.117-160000.1.1
tomcat-javadoc
9.0.117-1.1, 9.0.117-160000.1.1, 9.0.117-3.163.2
tomcat-jsp-2_3-api
9.0.117-1.1, 9.0.117-150200.105.1, 9.0.117-160000.1.1, 9.0.117-3.163.2
tomcat-jsp-2.3-api
1:9.0.117-2.el9_8, 1:9.0.87-2.el8_10
tomcat-jsp-3.1-api
1:10.1.49-3.el10_2
tomcat-jsvc
9.0.117-1.1, 9.0.117-160000.1.1
tomcat-lib
1:10.1.49-3.el10_2, 1:9.0.117-2.el9_8, 1:9.0.87-2.el8_10, 9.0.117-1.1, 9.0.117-150200.105.1, 9.0.117-160000.1.1, 9.0.117-3.163.2
tomcat-servlet-4_0-api
9.0.117-1.1, 9.0.117-150200.105.1, 9.0.117-160000.1.1, 9.0.117-3.163.2
tomcat-servlet-4.0-api
1:9.0.117-2.el9_8, 1:9.0.87-2.el8_10
tomcat-servlet-6.0-api
1:10.1.49-3.el10_2
tomcat-webapps
1:10.1.49-3.el10_2, 1:9.0.117-2.el9_8, 1:9.0.87-2.el8_10, 9.0.117-1.1, 9.0.117-150200.105.1, 9.0.117-160000.1.1, 9.0.117-3.163.2
Timeline
Publicly disclosed
Apr 9, 2026
Added to Industry KEV feed
Jul 30, 2026
Added to CISA KEV
Aug 4, 2026
Added to CIRCL KEV
Aug 4, 2026
Added to ENISA EUVD
Aug 4, 2026
Last updated
Sep 23, 2026
Weakness Type
- CWE-311 Missing Encryption of Sensitive Data
- CWE-807 Reliance on Untrusted Inputs in a Security Decision
References
- advisoryRHSA-2026:36787
- advisoryRHSA-2026:36788
- advisoryRHSA-2026:36789
- advisoryRHSA-2026:36790
- advisoryRHSA-2026:36876
FAQ
Common Questions.
Missing Encryption of Sensitive Data vulnerability in Apache Tomcat due to the fix for CVE-2026-29146 allowing the bypass of the EncryptInterceptor.
Affected: Tomcat (Apache) versions 10.1.53, 11.0.20, 9.0.116, >= 9.0.116, >= 11.0.20; Jboss Web Server (Redhat) versions 7.0.0; Enterprise Linux (Redhat) versions 10.0, 8.0, 9.0, among others. The full list is in the CVE brief.
It is exploited in the wild, listed in CISA KEV, Industry KEV feed, CIRCL KEV, ENISA EUVD since Jul 30, 2026.
Yes. It was added on Aug 4, 2026 with a federal remediation due date of Aug 7, 2026.
Public exploit code is available.
Fixed versions are available, including io.root.org.apache.tomcat.embed:tomcat-embed-core 11.0.20-root.io.1, io.root.org.apache.tomcat.embed:tomcat-embed-core 11.0.20-root.io.10, io.root.org.apache.tomcat.embed:tomcat-embed-core 11.0.20-root.io.11.
Brandefense priority: patch immediately, because it is listed as exploited in the wild.
Is CVE-2026-34486 Running On Your Attack Surface?
Brandefense maps vulnerabilities like this one to your internet-facing assets and tells you exactly where to patch.
Request A Demo