CVE Tools
Sign in

CVE-2026-29146

Apache Tomcat: EncryptInterceptor vulnerable to padding oracle attack by default

Published: Apr 9, 2026Updated: Apr 14, 2026 Sources: CVE List NVD BDUCWE-209
NVD MITRE
7.5CVSSHIGH
EPSS Score
3.6%
Top 11.9%
CISA KEV
Not in KEV
Exploits
No Known Exploits
Remediation
Patch Available

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 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
Open in CVSS calculator →

Weaknesses

CWE-209CWE-642

Affected Products

Apache TomcatApache Software Foundation
On-premWeb App
Networking Infrastructure / load-balancer-proxy
tomcatapache
On-premWeb App
Networking Infrastructure / load-balancer-proxy
АЛЬТ СП 10АО «ИВК»
On-premOS
Operating Systems / linux-distro
РЕД ОСООО «Ред Софт»
On-premOS
Operating Systems / linux-distro
TomcatApache Software Foundation
On-premWeb App
Networking Infrastructure / load-balancer-proxy
apache software foundationoss-projectUSWeb & CMS Pluginsaka apache foundation
apacheoss-projectUSWeb & CMS Pluginsaka apache http server, apache httpd
ао «ивк»commercialRUOperating Systemsaka ivk
ооо «ред софт»commercialRUOperating Systemsaka red soft

Attack Graph

Products CVE Techniques Tactics

Click technique nodes to view MITRE ATT&CK details. Scroll to zoom, drag to pan.

Exploitability

Official Patch Available

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
http://www.openwall.com/lists/oss-security/2026/04/09/24
openwall.com
and 2 more references View all →

Timeline

Published
Apr 9, 2026
Last Updated
Apr 14, 2026

Unlock Complete Vulnerability Intelligence

Get the full picture for CVE-2026-29146 and every CVE in our database. Create a free account — no credit card required.

Create Free Account
Plain-language analysis
Impact assessment and exploitation scenario in plain English
Attack graph visualization
Interactive attack path and kill chain mapping
Exploit details & PoC links
ExploitDB, Metasploit, GitHub PoCs with direct links
Nuclei scanner templates
Ready-to-use vulnerability scanner templates
Full remediation guide
Patch instructions, workarounds, and compliance impact
Interactive AI chat
Ask questions about this vulnerability in natural language
Related vulnerabilities
Semantically similar CVEs and attack patterns
REST API & MCP access
Integrate vulnerability data into your workflows