Skip to main content

Tomcat CVE-2026-34486

| EUVDEUVD-2026-21056 HIGH
Missing Encryption of Sensitive Data (CWE-311)
2026-04-09 apache GHSA-69r9-qgr7-g2wj
Apache Information Disclosure Tomcat Apache Tomcat
7.5
CVSS 3.1 · Vendor: apache
Share

Severity by source

Vendor (apache) PRIMARY
7.5 HIGH
AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:N
SUSE
HIGH
qualitative
Red Hat
7.5 HIGH
qualitative

Primary rating from Vendor (apache).

CVSS VectorVendor: apache

CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:N
Attack Vector
Network
Attack Complexity
Low
Privileges Required
None
User Interaction
None
Scope
Unchanged
Confidentiality
High
Integrity
None
Availability
None

Lifecycle Timeline

4
Patch released
Apr 11, 2026 - 02:30 nvd
Patch available
EUVD ID Assigned
Apr 09, 2026 - 20:15 euvd
EUVD-2026-21056
Analysis Generated
Apr 09, 2026 - 20:15 vuln.today
CVE Published
Apr 09, 2026 - 19:35 nvd
HIGH 7.5

Blast Radius

ecosystem impact
† from your stack dependencies † transitive graph · vuln.today resolves 4-path depth
  • 362 maven packages depend on org.apache.tomcat.embed:tomcat-embed-core (9 direct, 353 indirect)
  • 2 maven packages depend on org.apache.tomcat:tomcat-catalina (2 direct, 0 indirect)
  • 5 maven packages depend on org.apache.tomcat:tomcat-tribes (2 direct, 3 indirect)

Ecosystem-wide dependent count for version 11.0.20 and other introduced versions.

DescriptionCVE.org

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.

AnalysisAI

Encryption bypass in Apache Tomcat 11.0.20, 10.1.53, and 9.0.116 allows unauthenticated remote attackers to circumvent the EncryptInterceptor component, exposing sensitive data in cleartext. The vulnerability stems from an incomplete fix for CVE-2026-29146, enabling network-accessible adversaries to access confidential information without authentication. CVSS 7.5 (High severity) reflects network-based exploitation with low complexity and high confidentiality impact. No public exploit identified at time of analysis; low observed exploitation activity (EPSS <1%).

Technical ContextAI

Regression introduced during remediation of CVE-2026-29146 fails to properly enforce encryption requirements within Tomcat's EncryptInterceptor (CWE-311). Flaw permits cleartext transmission of data intended for cryptographic protection. Affects clustering/session replication layer where EncryptInterceptor should enforce encryption between cluster members. Attack vector network-accessible without authentication (AV:N/PR:N).

RemediationAI

Vendor-released patch: upgrade to Apache Tomcat 11.0.21, 10.1.54, or 9.0.117 immediately. These versions contain definitive fix for the EncryptInterceptor bypass. Organizations unable to upgrade should disable cluster encryption features and restrict network access to Tomcat cluster communication ports using firewall rules until patching is completed. Review cluster configuration to ensure EncryptInterceptor is explicitly enabled post-upgrade. Verify patch deployment through official Apache advisory: https://lists.apache.org/thread/9510k5p5zdvt9pkkgtyp85mvwxo2qrly. Prioritize patching for internet-facing deployments and systems processing sensitive data.

More in Tomcat

View all
CVE-2017-12617 HIGH POC
8.1 Oct 04

When running Apache Tomcat versions 9.0.0.M1 to 9.0.0, 8.5.0 to 8.5.22, 8.0.0.RC1 to 8.0.46 and 7.0.0 to 7.0.81 with HTT
CVE-2016-8735 CRITICAL POC
9.8 Apr 06

Remote code execution is possible with Apache Tomcat before 6.0.48, 7.x before 7.0.73, 8.x before 8.0.39, 8.5.x before 8
CVE-2017-12615 HIGH POC
8.1 Sep 19

When running Apache Tomcat 7.0.0 to 7.0.79 on Windows with HTTP PUTs enabled (e.g. Rated high severity (CVSS 8.1), this

CVE-2014-0050 HIGH POC
7.5 Apr 01

MultipartStream.java in Apache Commons FileUpload before 1.3.1, as used in Apache Tomcat, JBoss Web, and other products,
CVE-2017-12616 HIGH
7.5 Sep 19

When using a VirtualDirContext with Apache Tomcat 7.0.0 to 7.0.80 it was possible to bypass security constraints and/or

CVE-2014-0227 MEDIUM
6.4 Feb 16

java/org/apache/coyote/http11/filters/ChunkedInputFilter.java in Apache Tomcat 6.x before 6.0.42, 7.x before 7.0.55, and
CVE-2013-5528 MEDIUM POC
4.0 Oct 11

Directory traversal vulnerability in the Tomcat administrative web interface in Cisco Unified Communications Manager all
CVE-2016-6808 CRITICAL POC
9.8 Apr 12

Buffer overflow in Apache Tomcat Connectors (mod_jk) before 1.2.42. Rated critical severity (CVSS 9.8), this vulnerabili
CVE-2016-1240 HIGH POC
7.8 Oct 03

The Tomcat init script in the tomcat7 package before 7.0.56-3+deb8u4 and tomcat8 package before 8.0.14-1+deb8u3 on Debia
CVE-2016-5425 HIGH POC
7.8 Oct 13

The Tomcat package on Red Hat Enterprise Linux (RHEL) 7, Fedora, CentOS, Oracle Linux, and possibly other Linux distribu
CVE-2022-22965 CRITICAL POC
9.8 Apr 01

A Spring MVC or Spring WebFlux application running on JDK 9+ may be vulnerable to remote code execution (RCE) via data b
CVE-2025-31650 HIGH POC
7.5 Apr 28

Improper Input Validation vulnerability in Apache Tomcat. Rated high severity (CVSS 7.5), this vulnerability is remotely

Same weakness CWE-311 – Missing Encryption of Sensitive Data

View all
CVE-2017-8221 HIGH POC
7.5
CVE-2019-11367 CRITICAL POC
9.8
CVE-2025-69969 CRITICAL POC
9.6
CVE-2019-18800 HIGH POC
8.8
CVE-2017-6445 HIGH POC
8.1
CVE-2019-5448 HIGH POC
8.1
CVE-2018-5261 HIGH POC
8.1
CVE-2022-26281 HIGH POC
7.5

Same technique Information Disclosure

View all
CVE-2013-2251 CRITICAL POC
9.8
CVE-2017-5638 CRITICAL POC
9.8
CVE-2025-24813 CRITICAL POC
9.8
CVE-2015-1701 HIGH POC
7.8
CVE-2017-0147 HIGH POC
7.5
CVE-2014-6324 HIGH POC
8.8
CVE-2023-7028 CRITICAL POC
10.0
CVE-2017-0213 HIGH POC
7.3

Vendor StatusVendor

SUSE

Severity: High
Product Status
openSUSE Tumbleweed Fixed
SUSE Linux Enterprise High Performance Computing 15 SP4-ESPOS Affected
SUSE Linux Enterprise High Performance Computing 15 SP4-LTSS Affected
SUSE Linux Enterprise High Performance Computing 15 SP5-ESPOS Affected
SUSE Linux Enterprise High Performance Computing 15 SP5-LTSS Affected

Share

CVE-2026-34486 vulnerability details – vuln.today
Back

This site uses cookies essential for authentication and security. No tracking or analytics cookies are used. Privacy Policy