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CVE-2026-29146

Apache Tomcat: EncryptInterceptor vulnerable to padding oracle attack by default

Published: Apr 9, 2026Updated: Aug 4, 2026 Sources: CVE List NVD BDUCWE-209
7.5HIGH
NVD MITRE
EPSS Score
6.3%
Top 7.1%
CISA KEV
Not in KEV
Exploits
No Known Exploits
Remediation
Patch Available
Self-Check
OpenVAS

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.

No summary for this CVE yet.

CVSS Vector Breakdown

AV:NAC:LPR:NUI:NS:UC:HI:NA:N
Exploitability
AV:NAttack Vector
Network
AC:LAttack Complexity
Low
PR:NPrivileges Required
None
UI:NUser Interaction
None
Scope
S:UScope
Unchanged
Impact
C:HConfidentiality
High
I:NIntegrity
None
A:NAvailability
None
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Weaknesses

CWE-209CWE-642CWE-1240

Affected Products

Apache Software Foundation
oss-project·USaka apache foundation
Apache TomcatOn-premWeb App
Networking Infrastructure / load-balancer-proxy
apache
oss-project·USaka apache httpd, apache http server
tomcatOn-premWeb App
Networking Infrastructure / load-balancer-proxy
АО «ИВК»
commercial·RUaka ivk
АЛЬТ СП 10On-premOS
Operating Systems / linux-distro
ООО «Ред Софт»
commercial·RUaka red soft
РЕД ОСOn-premOS
Operating Systems / linux-distro
and 1 more affected products View all →

Exploitability

Official Patch Available
Is your org exposed to CVE-2026-29146?We can run the check for you — a free external exposure review, no install. Check my exposure

Attack Graph

Products CVE Techniques Tactics

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MITRE ATT&CK

1 technique
Discovery
View detailed technique mapping

References

https://lists.apache.org/thread/lzt04z2pb3dc5tk85obn80xygw3z1p0w
lists.apache.org
http://www.openwall.com/lists/oss-security/2026/04/09/24
openwall.com
https://access.redhat.com/errata/RHSA-2026:20405
access.redhat.com
and 20 more references View all →
News mentions
2

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