Skip to main content

Tomcat CVE-2026-29146

| EUVDEUVD-2026-21012 HIGH
Error Message Information Leak (CWE-209)
2026-04-09 apache GHSA-h468-7pvh-8vr8
Apache Oracle 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 - 19:45 euvd
EUVD-2026-21012
Analysis Generated
Apr 09, 2026 - 19:45 vuln.today
CVE Published
Apr 09, 2026 - 19:21 nvd
HIGH 7.5

Blast Radius

ecosystem impact
† from your stack dependencies † transitive graph · vuln.today resolves 4-path depth
  • 442 maven packages depend on org.apache.tomcat.embed:tomcat-embed-core (33 direct, 409 indirect)
  • 20 maven packages depend on org.apache.tomcat:tomcat-catalina (8 direct, 12 indirect)
  • 9 maven packages depend on org.apache.tomcat:tomcat-tribes (3 direct, 6 indirect)

Ecosystem-wide dependent count for version 9.0.13 and other introduced versions.

DescriptionCVE.org

Padding Oracle vulnerability in Apache Tomcat's EncryptInterceptor with default configuration.

This issue affects Apache Tomcat: from 11.0.0-M1 through 11.0.18, from 10.0.0-M1 through 10.1.52, from 9.0.13 through 9..115, from 8.5.38 through 8.5.100, from 7.0.100 through 7.0.109.

Users are recommended to upgrade to version 11.0.19, 10.1.53 and 9.0.116, which fixes the issue.

AnalysisAI

Padding oracle attack in Apache Tomcat EncryptInterceptor leaks encrypted session data confidentiality across versions 7.0.100-7.0.109, 8.5.38-8.5.100, 9.0.13-9.0.115, 10.0.0-M1-10.1.52, and 11.0.0-M1-11.0.18 when default configuration is deployed. Unauthenticated remote attackers exploit oracle responses to decrypt sensitive information without authentication (CVSS:3.1 AV:N/AC:L/PR:N). CWE-209 (information exposure through error messages) enables cryptographic side-channel extraction. No public exploit identified at time of analysis; low observed exploitation activity (EPSS 0.02%).

Technical ContextAI

Padding oracle vulnerability (CWE-209) in EncryptInterceptor default configuration exposes cryptographic implementation flaws. Attackers submit crafted ciphertext blocks and analyze error message timing/content differences to iteratively decrypt CBC-mode encrypted payloads without key possession. Affects cpe:2.3:a:apache_software_foundation:apache_tomcat across five major release branches spanning versions with default encryption settings.

RemediationAI

Vendor-released patch: upgrade to Apache Tomcat 11.0.19, 10.1.53, or 9.0.116 immediately. Apache Foundation confirms patched versions eliminate padding oracle response disclosure in EncryptInterceptor. For Tomcat 7.x and 8.5.x branches reaching end-of-life, migration to supported 9.0.116+ or 10.1.53+ is mandatory-no further 7.x/8.5.x security updates planned. Interim workaround: disable EncryptInterceptor in server.xml cluster configuration if encrypted session replication is non-critical; consult official advisory for alternative encryption configurations. Reference: https://lists.apache.org/thread/lzt04z2pb3dc5tk85obn80xygw3z1p0w and https://nvd.nist.gov/vuln/detail/CVE-2026-29146 for vendor guidance.

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-2023-47246 CRITICAL POC
9.8 Nov 10

In SysAid On-Premise before 23.3.36, a path traversal vulnerability leads to code execution after an attacker writes a f
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-2023-44487 HIGH POC
7.5 Oct 10

Denial of service against HTTP/2 server implementations allows remote unauthenticated attackers to exhaust server resour
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-2026-34486 HIGH POC
7.5 Apr 09

Missing encryption of cluster replication traffic in Apache Tomcat 11.0.20, 10.1.53, and 9.0.116 exposes sensitive sessi
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

Same weakness CWE-209 – Error Message Information Leak

View all
CVE-2025-47813 MEDIUM POC
4.3
CVE-2017-7551 CRITICAL POC
9.8
CVE-2026-48039 CRITICAL POC
9.1
CVE-2022-31140 CRITICAL POC
9.1
CVE-2024-23689 HIGH POC
8.8
CVE-2018-17961 HIGH POC
8.6
CVE-2023-37306 HIGH POC
7.5
CVE-2024-54141 HIGH POC
7.5

Same technique Information Disclosure

View all
CVE-2019-2725 CRITICAL POC
9.8
CVE-2021-34523 CRITICAL POC
9.0
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

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-2026-29146 vulnerability details – vuln.today
Back

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