Apache Tomcat: EncryptInterceptor vulnerable to padding oracle attack by default

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Summary

CVECVE-2026-29146
StatePUBLISHED
Assignerapache
Source PriorityCVE Program / NVD first with legacy fallback
Published2026-04-09 20:16:24 UTC
Updated2026-04-10 19:16:21 UTC
DescriptionPadding 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.

Risk And Classification

Primary CVSS: v3.1 7.5 HIGH from ADP

CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:N

Problem Types: CWE-209 | CWE-642 | Padding Oracle | CWE-209 CWE-209 Generation of Error Message Containing Sensitive Information | CWE-642 CWE-642 External Control of Critical State Data

VersionSourceTypeScoreSeverityVector
3.1ADPDECLARED7.5HIGHCVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:N
3.1134c704f-9b21-4f2e-91b3-4a467353bcc0Secondary7.5HIGHCVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:N

CVSS v3.1 Breakdown

Attack Vector
Network
Attack Complexity
Low
Privileges Required
None
User Interaction
None
Scope
Unchanged
Confidentiality
High
Integrity
None
Availability
None

CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:N

Vendor Declared Affected Products

SourceVendorProductVersionPlatforms
CNA Apache Software Foundation Apache Tomcat affected 11.0.0-M1 11.0.18 semver Not specified
CNA Apache Software Foundation Apache Tomcat affected 10.0.0-M1 10.1.52 semver Not specified
CNA Apache Software Foundation Apache Tomcat affected 9.0.13 9.0.115 semver Not specified
CNA Apache Software Foundation Apache Tomcat affected 8.5.38 8.5.100 semver Not specified
CNA Apache Software Foundation Apache Tomcat affected 7.0.100 7.0.109 semver Not specified

References

ReferenceSourceLinkTags
www.openwall.com/lists/oss-security/2026/04/09/24 af854a3a-2127-422b-91ae-364da2661108 www.openwall.com
lists.apache.org/thread/lzt04z2pb3dc5tk85obn80xygw3z1p0w [email protected] lists.apache.org
CVE Program record CVE.ORG www.cve.org canonical
NVD vulnerability detail NVD nvd.nist.gov canonical, analysis

Vendor Comments And Credit

Discovery Credit

CNA: Uri Katz and Avi Lumelsky (Oligo Security) (en)

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