CVE-2026-29146
Apache Tomcat: EncryptInterceptor vulnerable to padding oracle attack by default
CVSS Score
7.5
EPSS Score
0.0%
EPSS Percentile
0th
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.
| Vendor | apache software foundation |
| Product | apache tomcat |
| Published | Apr 9, 2026 |
| Last Updated | Jul 20, 2026 |
Stay Ahead of the Next One
Get instant alerts for apache software foundation apache tomcat
Be the first to know when new high vulnerabilities affecting apache software foundation apache tomcat are published — delivered to Slack, Telegram or Discord.
Get Free Alerts →
Free · No credit card · 60 sec setup
Affected Versions
Apache Software Foundation / Apache Tomcat
11.0.0-M1 ≤ 11.0.18 10.0.0-M1 ≤ 10.1.52 9.0.13 ≤ 9.0.115 8.5.38 ≤ 8.5.100 7.0.100 ≤ 7.0.109
References
lists.apache.org: https://lists.apache.org/thread/lzt04z2pb3dc5tk85obn80xygw3z1p0w openwall.com: http://www.openwall.com/lists/oss-security/2026/04/09/24 access.redhat.com: https://access.redhat.com/security/cve/CVE-2026-29146 bugzilla.redhat.com: https://bugzilla.redhat.com/show_bug.cgi?id=2457020 security.access.redhat.com: https://security.access.redhat.com/data/csaf/v2/vex/2026/cve-2026-29146.json access.redhat.com: https://access.redhat.com/errata/RHSA-2026:20405 access.redhat.com: https://access.redhat.com/errata/RHSA-2026:39188 access.redhat.com: https://access.redhat.com/errata/RHSA-2026:38505 access.redhat.com: https://access.redhat.com/errata/RHSA-2026:36787 access.redhat.com: https://access.redhat.com/errata/RHSA-2026:36789 access.redhat.com: https://access.redhat.com/errata/RHSA-2026:36788 access.redhat.com: https://access.redhat.com/errata/RHSA-2026:36790 access.redhat.com: https://access.redhat.com/errata/RHSA-2026:37137 access.redhat.com: https://access.redhat.com/errata/RHSA-2026:37136 access.redhat.com: https://access.redhat.com/errata/RHSA-2026:36878 access.redhat.com: https://access.redhat.com/errata/RHSA-2026:36876 access.redhat.com: https://access.redhat.com/errata/RHSA-2026:36877 access.redhat.com: https://access.redhat.com/errata/RHSA-2026:36879 access.redhat.com: https://access.redhat.com/errata/RHSA-2026:20406 access.redhat.com: https://access.redhat.com/errata/RHSA-2026:39189
Credits
Uri Katz and Avi Lumelsky (Oligo Security)