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Apache Tomcat EncryptInterceptor Padding Oracle Scores 7.5

Last refreshed2026-09-26

Status: EPSS-IMMINENT  |  Advisory ID: CVE-2026-29146

Key Details

CVECVE-2026-29146
CVSS Score / Version7.5 (High) / CVSS v3.1
Updated2026-09-23
CVSS VectorCVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:N
CVSS Proseattack vector is network; attack complexity is low; privileges required is none; user interaction is none; scope is unchanged; confidentiality impact is high; integrity impact is none; availability impact is none.
Affected productsApache Tomcat
Classified asCWE-209 (Generation of Error Message Containing Sensitive Information)
Exploitation prediction (EPSS)2.89% probability of exploitation in the next 30 days (86% percentile) -- FIRST.org's EPSS model.

Affected Products, Subsystems & Sectors

VendorProductAffected VersionsPatch Status
ApacheTomcat
SubsystemsGeneral OT
SectorsMultiple

What to Know

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.

What to Do

Monitor Apache's web page for any future patch releases. See vendor advisory link below.

References

SourceReference
NVDhttps://nvd.nist.gov/vuln/detail/CVE-2026-29146
CVEhttps://www.cve.org/CVERecord?id=CVE-2026-29146
Vendor advisoryhttps://lists.apache.org/thread/lzt04z2pb3dc5tk85obn80xygw3z1p0w