Read the docs
TI-2026-23284 Aliases CVE-2026-29146GHSA-h468-7pvh-8vr8

Apache Tomcat: EncryptInterceptor vulnerable to padding oracle attack by default

Priority MEDIUM 50CWE-209Published · Updated

Key facts

Attack vector
Network
Privileges required
None
User interaction
None
Attack complexity
Low
Impact type
Information disclosure
Confidentiality · integrity · availability
High · None · None
Fix status
Partial Red Hat: 19 fixed, 3 without a fix

Attack profile from CVSS 3.1 · CISA ADP. Fix status from CNA, GitHub and Red Hat. Impact type from CWE-209.

Summary

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.

Why it matters now

Exploitation None reported CISA SSVC · not in CISA KEV
EPSS 0.0885 95th percentileScored 2026-11-07
Fix Partial org.apache.tomcat:tomcat-tribes (Maven): 9.0.116, 10.1.53, 11.0.20org.apache.tomcat:tomcat (Maven): 9.0.116, 10.1.53, 11.0.20Red Hat: 15 advisoriesRed Hat: 19 fixed, 3 without a fix

SSVC decision points

CISA ADP · SSVC 2.0.3

Exploitation
None
Automatable
Yes
Technical impact
Partial

The decision (Track, Attend, Act) also depends on your mission and well-being impact; see CISA's SSVC guide.

Affected products

VendorProductAffected versionsFixed inStatusSource
ApacheApache Tomcat11.0.0-M1 – 11.0.18; 10.0.0-M1 – 10.1.52; 9.0.13 – 9.0.115; 8.5.38 – 8.5.100; 7.0.100 – 7.0.109—No fix listedCNA
—org.apache.tomcat:tomcat-tribes (Maven)9.0.13 to before 9.0.1169.0.116Patch availableGHSA-h468-7pvh-8vr8
—org.apache.tomcat:tomcat-tribes (Maven)10.1.50 to before 10.1.5310.1.53Patch availableGHSA-h468-7pvh-8vr8
—org.apache.tomcat:tomcat-tribes (Maven)11.0.0-M1 to before 11.0.2011.0.20Patch availableGHSA-h468-7pvh-8vr8
—org.apache.tomcat:tomcat (Maven)9.0.13 to before 9.0.1169.0.116Patch availableGHSA-h468-7pvh-8vr8
—org.apache.tomcat:tomcat (Maven)10.1.50 to before 10.1.5310.1.53Patch availableGHSA-h468-7pvh-8vr8
—org.apache.tomcat:tomcat (Maven)11.0.0-M1 to before 11.0.2011.0.20Patch availableGHSA-h468-7pvh-8vr8
—org.apache.tomcat:tomcat-tribes (Maven)8.5.38 – 8.5.100—No fix listedGHSA-h468-7pvh-8vr8
—org.apache.tomcat:tomcat (Maven)8.5.38 – 8.5.100—No fix listedGHSA-h468-7pvh-8vr8
—org.apache.tomcat:tomcat-tribes (Maven)7.0.100 – 7.0.109—No fix listedGHSA-h468-7pvh-8vr8
—org.apache.tomcat:tomcat (Maven)7.0.100 – 7.0.109—No fix listedGHSA-h468-7pvh-8vr8
  • Apache Tomcat VendorApache Affected 11.0.0-M1 – 11.0.18; 10.0.0-M1 – 10.1.52; 9.0.13 – 9.0.115; 8.5.38 – 8.5.100; 7.0.100 – 7.0.109 Fixed in — No fix listed CNA
  • org.apache.tomcat:tomcat-tribes (Maven) Vendor— Affected 9.0.13 to before 9.0.116 Fixed in 9.0.116 Patch available GHSA-h468-7pvh-8vr8
  • org.apache.tomcat:tomcat-tribes (Maven) Vendor— Affected 10.1.50 to before 10.1.53 Fixed in 10.1.53 Patch available GHSA-h468-7pvh-8vr8
  • org.apache.tomcat:tomcat-tribes (Maven) Vendor— Affected 11.0.0-M1 to before 11.0.20 Fixed in 11.0.20 Patch available GHSA-h468-7pvh-8vr8
  • org.apache.tomcat:tomcat (Maven) Vendor— Affected 9.0.13 to before 9.0.116 Fixed in 9.0.116 Patch available GHSA-h468-7pvh-8vr8
  • org.apache.tomcat:tomcat (Maven) Vendor— Affected 10.1.50 to before 10.1.53 Fixed in 10.1.53 Patch available GHSA-h468-7pvh-8vr8
  • org.apache.tomcat:tomcat (Maven) Vendor— Affected 11.0.0-M1 to before 11.0.20 Fixed in 11.0.20 Patch available GHSA-h468-7pvh-8vr8
  • org.apache.tomcat:tomcat-tribes (Maven) Vendor— Affected 8.5.38 – 8.5.100 Fixed in — No fix listed GHSA-h468-7pvh-8vr8
  • org.apache.tomcat:tomcat (Maven) Vendor— Affected 8.5.38 – 8.5.100 Fixed in — No fix listed GHSA-h468-7pvh-8vr8
  • org.apache.tomcat:tomcat-tribes (Maven) Vendor— Affected 7.0.100 – 7.0.109 Fixed in — No fix listed GHSA-h468-7pvh-8vr8
  • org.apache.tomcat:tomcat (Maven) Vendor— Affected 7.0.100 – 7.0.109 Fixed in — No fix listed GHSA-h468-7pvh-8vr8

CPE configurations NVD · 1

CPEVersionsRoleVendor
cpe:2.3:a:apache:tomcat:*:*:*:*:*:*:*:*7.0.100 – 7.0.109; 8.5.38 – 8.5.100; 9.0.13 to before 9.0.116; 10.0.0 to before 10.1.53; 11.0.0 to before 11.0.20VulnerableApache
  • cpe:2.3:a:apache:tomcat:*:*:*:*:*:*:*:* Versions 7.0.100 – 7.0.109; 8.5.38 – 8.5.100; 9.0.13 to before 9.0.116; 10.0.0 to before 10.1.53; 11.0.0 to before 11.0.20 Vulnerable ·Apache

Remediation

  • Fix · GHSA-h468-7pvh-8vr8 org.apache.tomcat:tomcat-tribes (Maven) Fixed in 9.0.116 Advisory →
  • Fix · GHSA-h468-7pvh-8vr8 org.apache.tomcat:tomcat-tribes (Maven) Fixed in 10.1.53 Advisory →
  • Fix · GHSA-h468-7pvh-8vr8 org.apache.tomcat:tomcat-tribes (Maven) Fixed in 11.0.20 Advisory →
  • Fix · GHSA-h468-7pvh-8vr8 org.apache.tomcat:tomcat (Maven) Fixed in 9.0.116 Advisory →
  • Fix · GHSA-h468-7pvh-8vr8 org.apache.tomcat:tomcat (Maven) Fixed in 10.1.53 Advisory →
  • Fix · GHSA-h468-7pvh-8vr8 org.apache.tomcat:tomcat (Maven) Fixed in 11.0.20 Advisory →

Red Hat 15 advisories

  • RHSA-2026:39188 Released 2026-07-14 · Red Hat rating Important
    Red Hat JBoss Web Server 7.0.0 security release
    • Red Hat JBoss Web Server 7.0 on RHEL 10 jws7-tomcat-11.0.21-5.redhat_00004.1.el10jws, jws7-tomcat-admin-webapps-11.0.21-5.redhat_00004.1.el10jws, jws7-tomcat-docs-webapp-11.0.21-5.redhat_00004.1.el10jws +7
    • Red Hat JBoss Web Server 7.0 on RHEL 8 jws7-tomcat-11.0.21-5.redhat_00004.1.el8jws, jws7-tomcat-admin-webapps-11.0.21-5.redhat_00004.1.el8jws, jws7-tomcat-docs-webapp-11.0.21-5.redhat_00004.1.el8jws +7
    • Red Hat JBoss Web Server 7.0 on RHEL 9 jws7-tomcat-11.0.21-5.redhat_00004.1.el9jws, jws7-tomcat-admin-webapps-11.0.21-5.redhat_00004.1.el9jws, jws7-tomcat-docs-webapp-11.0.21-5.redhat_00004.1.el9jws +7
  • RHSA-2026:39189 Released 2026-07-14 · Red Hat rating Important
    Red Hat JBoss Web Server 7.0.0 security release
    • Red Hat JBoss Web Server 7.0.0
  • RHSA-2026:38505 Released 2026-07-13 · Red Hat rating Important
    tomcat security, bug fix, and enhancement update
    • Red Hat Enterprise Linux Server (v. 7 ELS) tomcat-7.0.76-18.el7_9, tomcat-admin-webapps-7.0.76-18.el7_9, tomcat-el-2.2-api-7.0.76-18.el7_9 +4
    • Red Hat Enterprise Linux Server Optional (v. 7 ELS) tomcat-7.0.76-18.el7_9, tomcat-admin-webapps-7.0.76-18.el7_9, tomcat-docs-webapp-7.0.76-18.el7_9 +6
Show 12 more Red Hat advisories
  • RHSA-2026:37137 Released 2026-07-09 · Red Hat rating Important
    tomcat security, bug fix, and enhancement update
    • Red Hat Enterprise Linux AppStream (v. 8) tomcat-1:9.0.87-2.el8_10, tomcat-admin-webapps-1:9.0.87-2.el8_10, tomcat-docs-webapp-1:9.0.87-2.el8_10 +5
  • RHSA-2026:37136 Released 2026-07-09 · Red Hat rating Important
    tomcat security update
    • Red Hat Enterprise Linux AppStream E4S (v.8.8) tomcat-1:9.0.87-2.el8_8, tomcat-admin-webapps-1:9.0.87-2.el8_8, tomcat-docs-webapp-1:9.0.87-2.el8_8 +5
    • Red Hat Enterprise Linux AppStream TUS (v.8.8) tomcat-1:9.0.87-2.el8_8, tomcat-admin-webapps-1:9.0.87-2.el8_8, tomcat-docs-webapp-1:9.0.87-2.el8_8 +5
  • RHSA-2026:36879 Released 2026-07-08 · Red Hat rating Important
    tomcat security, bug fix, and enhancement update
    • Red Hat Enterprise Linux AppStream (v. 9) tomcat-1:9.0.117-2.el9_8, tomcat-admin-webapps-1:9.0.117-2.el9_8, tomcat-docs-webapp-1:9.0.117-2.el9_8 +5
  • RHSA-2026:36877 Released 2026-07-08 · Red Hat rating Important
    tomcat security update
    • Red Hat Enterprise Linux AppStream EUS (v.9.6) tomcat-1:9.0.87-4.el9_6, tomcat-admin-webapps-1:9.0.87-4.el9_6, tomcat-docs-webapp-1:9.0.87-4.el9_6 +5
  • RHSA-2026:36876 Released 2026-07-08 · Red Hat rating Important
    tomcat security update
    • Red Hat Enterprise Linux AppStream E4S (v.9.4) tomcat-1:9.0.87-2.el9_4, tomcat-admin-webapps-1:9.0.87-2.el9_4, tomcat-docs-webapp-1:9.0.87-2.el9_4 +5
  • RHSA-2026:36878 Released 2026-07-08 · Red Hat rating Important
    tomcat security update
    • Red Hat Enterprise Linux AppStream E4S (v.9.2) tomcat-1:9.0.87-2.el9_2, tomcat-admin-webapps-1:9.0.87-2.el9_2, tomcat-docs-webapp-1:9.0.87-2.el9_2 +5
  • RHSA-2026:36788 Released 2026-07-08 · Red Hat rating Important
    tomcat security, bug fix, and enhancement update
    • Red Hat Enterprise Linux AppStream (v. 10) tomcat-1:10.1.49-3.el10_2, tomcat-admin-webapps-1:10.1.49-3.el10_2, tomcat-docs-webapp-1:10.1.49-3.el10_2 +5
  • RHSA-2026:36790 Released 2026-07-08 · Red Hat rating Important
    tomcat9 security, bug fix, and enhancement update
    • Red Hat Enterprise Linux AppStream (v. 10) tomcat9-1:9.0.117-2.el10_2, tomcat9-admin-webapps-1:9.0.117-2.el10_2, tomcat9-docs-webapp-1:9.0.117-2.el10_2 +5
  • RHSA-2026:36787 Released 2026-07-08 · Red Hat rating Important
    tomcat security update
    • Red Hat Enterprise Linux AppStream EUS (v. 10.0) tomcat-1:10.1.36-2.el10_0, tomcat-admin-webapps-1:10.1.36-2.el10_0, tomcat-docs-webapp-1:10.1.36-2.el10_0 +5
  • RHSA-2026:36789 Released 2026-07-08 · Red Hat rating Important
    tomcat9 security update
    • Red Hat Enterprise Linux AppStream EUS (v. 10.0) tomcat9-1:9.0.87-6.el10_0, tomcat9-admin-webapps-1:9.0.87-6.el10_0, tomcat9-docs-webapp-1:9.0.87-6.el10_0 +5
  • RHSA-2026:20405 Released 2026-05-26 · Red Hat rating Important
    Red Hat JBoss Web Server 6.2.3 release and security update
    • Red Hat JBoss Web Server 6.2 on RHEL 10 jws6-tomcat-10.1.49-13.redhat_00011.1.el10jws, jws6-tomcat-admin-webapps-10.1.49-13.redhat_00011.1.el10jws, jws6-tomcat-docs-webapp-10.1.49-13.redhat_00011.1.el10jws +7
    • Red Hat JBoss Web Server 6.2 on RHEL 8 jws6-tomcat-10.1.49-13.redhat_00011.1.el8jws, jws6-tomcat-admin-webapps-10.1.49-13.redhat_00011.1.el8jws, jws6-tomcat-docs-webapp-10.1.49-13.redhat_00011.1.el8jws +7
    • Red Hat JBoss Web Server 6.2 on RHEL 9 jws6-tomcat-10.1.49-13.redhat_00011.1.el9jws, jws6-tomcat-admin-webapps-10.1.49-13.redhat_00011.1.el9jws, jws6-tomcat-docs-webapp-10.1.49-13.redhat_00011.1.el9jws +7
  • RHSA-2026:20406 Released 2026-05-26 · Red Hat rating Important
    Red Hat JBoss Web Server 6.2.3 release and security update
    • Red Hat JBoss Web Server 6.2.3

Vendor assessments

Red Hat

Red Hat rating: Important. Red Hat's page for this CVE →

ProductStatusPlan or fix
Red Hat Enterprise Linux 6AffectedNo fix planned: Out of support scope
Red Hat Enterprise Linux 8AffectedNo fix planned: Will not fix
Red Hat JBoss Web Server 5AffectedNo fix planned: Will not fix
Red Hat Enterprise Linux AppStream (v. 10)Fixed RHSA-2026:36788, RHSA-2026:36790
Red Hat Enterprise Linux AppStream (v. 8)Fixed RHSA-2026:37137
Red Hat Enterprise Linux AppStream (v. 9)Fixed RHSA-2026:36879
Red Hat Enterprise Linux AppStream E4S (v.8.8)Fixed RHSA-2026:37136
Red Hat Enterprise Linux AppStream E4S (v.9.2)Fixed RHSA-2026:36878
Red Hat Enterprise Linux AppStream E4S (v.9.4)Fixed RHSA-2026:36876
Red Hat Enterprise Linux AppStream EUS (v. 10.0)Fixed RHSA-2026:36787, RHSA-2026:36789
Red Hat Enterprise Linux AppStream EUS (v.9.6)Fixed RHSA-2026:36877
Red Hat Enterprise Linux AppStream TUS (v.8.8)Fixed RHSA-2026:37136
Red Hat Enterprise Linux Server (v. 7 ELS)Fixed RHSA-2026:38505
Red Hat Enterprise Linux Server Optional (v. 7 ELS)Fixed RHSA-2026:38505
Red Hat JBoss Web Server 6.2 on RHEL 10Fixed RHSA-2026:20405
Red Hat JBoss Web Server 6.2 on RHEL 8Fixed RHSA-2026:20405
Red Hat JBoss Web Server 6.2 on RHEL 9Fixed RHSA-2026:20405
Red Hat JBoss Web Server 6.2.3Fixed RHSA-2026:20406
Red Hat JBoss Web Server 7.0 on RHEL 10Fixed RHSA-2026:39188
Red Hat JBoss Web Server 7.0 on RHEL 8Fixed RHSA-2026:39188
Red Hat JBoss Web Server 7.0 on RHEL 9Fixed RHSA-2026:39188
Red Hat JBoss Web Server 7.0.0Fixed RHSA-2026:39189
Not affected: 4 products
  • Red Hat Enterprise Linux 9
  • Red Hat JBoss Web Server 7.0 on RHEL 10
  • Red Hat JBoss Web Server 7.0 on RHEL 8
  • Red Hat JBoss Web Server 7.0 on RHEL 9

Timeline

  1. 2026-10-02 Threatist record created from CVE-2026-29146
  2. 2026-10-03 Alias added: GHSA-h468-7pvh-8vr8
  3. 2026-10-09 Fix available: RHSA-2026:20406 · Red Hat
  4. 2026-10-25 EPSS moved to the 95th–99th percentile
  5. 2026-11-05 Fix available: Red Hat JBoss Web Server 6.2.3 · Red Hat

References

Advisory 3

Other 8

  • TI-2025-18529 Apache Tomcat: Potential RCE and/or information disclosure and/or information corruption with partial PUT KEVCVSS 3.1CRITICAL 10.0
  • TI-2020-01862 Improper privilege management in Apache Tomcat KEVCVSS 3.1CRITICAL 9.8
  • TI-2016-07192 Improper access control in Apache Tomcat KEVCVSS 3.1CRITICAL 9.8
  • TI-2017-09342 Unrestricted file upload in Apache Tomcat KEVCVSS 3.1HIGH 8.1
  • TI-2017-09340 Unrestricted file upload in Apache Tomcat KEVCVSS 3.1HIGH 8.1
  • TI-2026-26741 Apache Tomcat: Fix for CVE-2026-29146 allowed bypass of EncryptInterceptor KEVCVSS 3.1HIGH 7.5
See all 273 →

Sources

This product uses the NVD API but is not endorsed or certified by the NVD. Sources and licences