CVE-2026-29146
Apache Tomcat: EncryptInterceptor vulnerable to padding oracle attack by default
- State
- Published
- Severity
- 7.5 High
- Published
- Apr 9, 2026
- Updated
- Aug 17, 2026
- Reserved
- Mar 4, 2026
Description
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.
Scores
| CVSS | Score | Vector | Source |
|---|---|---|---|
| 3.1 | 7.5 High | CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:N | CISA-ADP |
| 3.1 | 7.5 High | CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:N | redhat-SADP |
Weaknesses
Affected Products
| Product | Versions |
|---|---|
Apache TomcatApache Software Foundation |
|
References
- https://lists.apache.org/thread/lzt04z2pb3dc5tk85obn80xygw3z1p0wvendor-advisory
- http://www.openwall.com/lists/oss-security/2026/04/09/24
- https://access.redhat.com/security/cve/CVE-2026-29146vdb-entry
- RHBZ#2457020issue-tracking
- https://security.access.redhat.com/data/csaf/v2/vex/2026/cve-2026-29146.json
- https://access.redhat.com/errata/RHSA-2026:20405vendor-advisory
- https://access.redhat.com/errata/RHSA-2026:39188vendor-advisory
- https://access.redhat.com/errata/RHSA-2026:38505vendor-advisory
- https://access.redhat.com/errata/RHSA-2026:36787vendor-advisory
- https://access.redhat.com/errata/RHSA-2026:36789vendor-advisory
- https://access.redhat.com/errata/RHSA-2026:36788vendor-advisory
- https://access.redhat.com/errata/RHSA-2026:36790vendor-advisory
- https://access.redhat.com/errata/RHSA-2026:37137vendor-advisory
- https://access.redhat.com/errata/RHSA-2026:37136vendor-advisory
- https://access.redhat.com/errata/RHSA-2026:36878vendor-advisory
- https://access.redhat.com/errata/RHSA-2026:36876vendor-advisory
- https://access.redhat.com/errata/RHSA-2026:36877vendor-advisory
- https://access.redhat.com/errata/RHSA-2026:36879vendor-advisory
- https://access.redhat.com/errata/RHSA-2026:20406vendor-advisory
- https://access.redhat.com/errata/RHSA-2026:39189vendor-advisory
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