VulnerabilityModified
CVE-2026-29146
Padding Oracle vulnerability in Apache Tomcat's EncryptInterceptor with default configuration.
HIGH 7.5EPSS 8.85%
Does this matter?
High impact if exploited, but EPSS currently rates exploitation as unlikely (8.85%). Schedule it in the normal patch cycle and watch for a rise in EPSS or a public exploit.
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.
- CVSS 3.1
- 7.5 HIGHCVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:N
- EPSS
- 8.85% probability · 95th percentile
- CISA KEV
- Not listed
- Weakness
- CWE-209, CWE-642, CWE-1240
- Affected
- apache/tomcat
- Source
- security@apache.org
References
- https://lists.apache.org/thread/lzt04z2pb3dc5tk85obn80xygw3z1p0wMailing List, Vendor Advisory
- http://www.openwall.com/lists/oss-security/2026/04/09/24Mailing List, Third Party Advisory
- https://access.redhat.com/errata/RHSA-2026:20405
- https://access.redhat.com/errata/RHSA-2026:20406
- https://access.redhat.com/errata/RHSA-2026:36787
- https://access.redhat.com/errata/RHSA-2026:36788
- https://access.redhat.com/errata/RHSA-2026:36789
- https://access.redhat.com/errata/RHSA-2026:36790
- https://access.redhat.com/errata/RHSA-2026:36876
- https://access.redhat.com/errata/RHSA-2026:36877
- https://access.redhat.com/errata/RHSA-2026:36878
- https://access.redhat.com/errata/RHSA-2026:36879
- https://access.redhat.com/errata/RHSA-2026:37136
- https://access.redhat.com/errata/RHSA-2026:37137
- https://access.redhat.com/errata/RHSA-2026:38505
- https://access.redhat.com/errata/RHSA-2026:39188
- https://access.redhat.com/errata/RHSA-2026:39189
- https://access.redhat.com/security/cve/CVE-2026-29146
- https://bugzilla.redhat.com/show_bug.cgi?id=2457020
- https://security.access.redhat.com/data/csaf/v2/vex/2026/cve-2026-29146.json
Source: NVD record, EPSS from FIRST.org, KEV from CISA. Refreshed daily.