Apache Tomcat: Fix for CVE-2026-29146 allowed bypass of EncryptInterceptor
Priority CRITICAL 90Exploited in the wildCWE-311Published · 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: 15 fixed, 2 without a fix
Attack profile from CVSS 3.1 · CISA ADP. Fix status from CNA, GitHub and Red Hat. Impact type from CWE-311.
Summary
Missing Encryption of Sensitive Data vulnerability in Apache Tomcat due to the fix for CVE-2026-29146 allowing the bypass of the EncryptInterceptor. This issue affects Apache Tomcat: 11.0.20, 10.1.53, 9.0.116. Users are recommended to upgrade to version 11.0.21, 10.1.54 or 9.0.117, which fix the issue.
Why it matters now
Exploitation Active In CISA KEV since 2026-08-04CISA due date 2026-08-07
EPSS 0.98503 99th percentileScored 2026-11-07
Fix Partial org.apache.tomcat:tomcat-tribes (Maven): 11.0.21, 10.1.54, 9.0.117org.apache.tomcat:tomcat (Maven): 11.0.21, 10.1.54, 9.0.117Red Hat: 13 advisoriesRed Hat: 15 fixed, 2 without a fix
SSVC decision points
CISA ADP · SSVC 2.0.3
- Exploitation
- Active
- 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
| Vendor | Product | Affected versions | Fixed in | Status | Source |
|---|---|---|---|---|---|
| Apache | Apache Tomcat | 11.0.20; 10.1.53; 9.0.116 | — | No fix listed | CNA |
| — | org.apache.tomcat:tomcat-tribes (Maven) | 11.0.20 to before 11.0.21 | 11.0.21 | Patch available | GHSA-69r9-qgr7-g2wj |
| — | org.apache.tomcat:tomcat-tribes (Maven) | 10.1.53 to before 10.1.54 | 10.1.54 | Patch available | GHSA-69r9-qgr7-g2wj |
| — | org.apache.tomcat:tomcat-tribes (Maven) | 9.0.116 to before 9.0.117 | 9.0.117 | Patch available | GHSA-69r9-qgr7-g2wj |
| — | org.apache.tomcat:tomcat (Maven) | 11.0.20 to before 11.0.21 | 11.0.21 | Patch available | GHSA-69r9-qgr7-g2wj |
| — | org.apache.tomcat:tomcat (Maven) | 10.1.53 to before 10.1.54 | 10.1.54 | Patch available | GHSA-69r9-qgr7-g2wj |
| — | org.apache.tomcat:tomcat (Maven) | 9.0.116 to before 9.0.117 | 9.0.117 | Patch available | GHSA-69r9-qgr7-g2wj |
- Apache Tomcat VendorApache Affected 11.0.20; 10.1.53; 9.0.116 Fixed in — No fix listed CNA
- org.apache.tomcat:tomcat-tribes (Maven) Vendor— Affected 11.0.20 to before 11.0.21 Fixed in 11.0.21 Patch available GHSA-69r9-qgr7-g2wj
- org.apache.tomcat:tomcat-tribes (Maven) Vendor— Affected 10.1.53 to before 10.1.54 Fixed in 10.1.54 Patch available GHSA-69r9-qgr7-g2wj
- org.apache.tomcat:tomcat-tribes (Maven) Vendor— Affected 9.0.116 to before 9.0.117 Fixed in 9.0.117 Patch available GHSA-69r9-qgr7-g2wj
- org.apache.tomcat:tomcat (Maven) Vendor— Affected 11.0.20 to before 11.0.21 Fixed in 11.0.21 Patch available GHSA-69r9-qgr7-g2wj
- org.apache.tomcat:tomcat (Maven) Vendor— Affected 10.1.53 to before 10.1.54 Fixed in 10.1.54 Patch available GHSA-69r9-qgr7-g2wj
- org.apache.tomcat:tomcat (Maven) Vendor— Affected 9.0.116 to before 9.0.117 Fixed in 9.0.117 Patch available GHSA-69r9-qgr7-g2wj
CPE configurations NVD · 14
| CPE | Versions | Role | Vendor |
|---|---|---|---|
| cpe:2.3:a:apache:tomcat:9.0.116:*:*:*:*:*:*:* | 9.0.116 | Vulnerable | Apache |
| cpe:2.3:a:apache:tomcat:10.1.53:*:*:*:*:*:*:* | 10.1.53 | Vulnerable | Apache |
| cpe:2.3:a:apache:tomcat:11.0.20:*:*:*:*:*:*:* | 11.0.20 | Vulnerable | Apache |
| cpe:2.3:a:redhat:jboss_web_server:7.0.0:*:*:*:*:*:*:* | 7.0.0 | Vulnerable | Red Hat |
| cpe:2.3:o:redhat:enterprise_linux:8.0:*:*:*:*:*:*:* | 8.0 | Vulnerable | Red Hat |
| cpe:2.3:o:redhat:enterprise_linux:9.0:*:*:*:*:*:*:* | 9.0 | Vulnerable | Red Hat |
| cpe:2.3:o:redhat:enterprise_linux:10.0:*:*:*:*:*:*:* | 10.0 | Vulnerable | Red Hat |
| cpe:2.3:o:redhat:enterprise_linux_els:7.0:*:*:*:*:*:*:* | 7.0 | Vulnerable | Red Hat |
| cpe:2.3:o:redhat:enterprise_linux_eus:10.0:*:*:*:*:*:*:* | 10.0 | Vulnerable | Red Hat |
| cpe:2.3:o:redhat:enterprise_linux_tus:8.8:*:*:*:*:*:*:* | 8.8 | Vulnerable | Red Hat |
- cpe:2.3:a:apache:tomcat:9.0.116:*:*:*:*:*:*:* Versions 9.0.116 Vulnerable ·Apache
- cpe:2.3:a:apache:tomcat:10.1.53:*:*:*:*:*:*:* Versions 10.1.53 Vulnerable ·Apache
- cpe:2.3:a:apache:tomcat:11.0.20:*:*:*:*:*:*:* Versions 11.0.20 Vulnerable ·Apache
- cpe:2.3:a:redhat:jboss_web_server:7.0.0:*:*:*:*:*:*:* Versions 7.0.0 Vulnerable ·Red Hat
- cpe:2.3:o:redhat:enterprise_linux:8.0:*:*:*:*:*:*:* Versions 8.0 Vulnerable ·Red Hat
- cpe:2.3:o:redhat:enterprise_linux:9.0:*:*:*:*:*:*:* Versions 9.0 Vulnerable ·Red Hat
- cpe:2.3:o:redhat:enterprise_linux:10.0:*:*:*:*:*:*:* Versions 10.0 Vulnerable ·Red Hat
- cpe:2.3:o:redhat:enterprise_linux_els:7.0:*:*:*:*:*:*:* Versions 7.0 Vulnerable ·Red Hat
- cpe:2.3:o:redhat:enterprise_linux_eus:10.0:*:*:*:*:*:*:* Versions 10.0 Vulnerable ·Red Hat
- cpe:2.3:o:redhat:enterprise_linux_tus:8.8:*:*:*:*:*:*:* Versions 8.8 Vulnerable ·Red Hat
Show 4 more CPE
| CPE | Versions | Role | Vendor |
|---|---|---|---|
| cpe:2.3:o:redhat:enterprise_linux_update_services_for_sap_solutions:8.8:*:*:*:*:*:*:* | 8.8 | Vulnerable | Red Hat |
| cpe:2.3:o:redhat:enterprise_linux_update_services_for_sap_solutions:9.2:*:*:*:*:*:*:* | 9.2 | Vulnerable | Red Hat |
| cpe:2.3:o:redhat:enterprise_linux_update_services_for_sap_solutions:9.4:*:*:*:*:*:*:* | 9.4 | Vulnerable | Red Hat |
| cpe:2.3:o:redhat:enterprise_linux_update_services_for_sap_solutions:9.6:*:*:*:*:*:*:* | 9.6 | Vulnerable | Red Hat |
- cpe:2.3:o:redhat:enterprise_linux_update_services_for_sap_solutions:8.8:*:*:*:*:*:*:* Versions 8.8 Vulnerable ·Red Hat
- cpe:2.3:o:redhat:enterprise_linux_update_services_for_sap_solutions:9.2:*:*:*:*:*:*:* Versions 9.2 Vulnerable ·Red Hat
- cpe:2.3:o:redhat:enterprise_linux_update_services_for_sap_solutions:9.4:*:*:*:*:*:*:* Versions 9.4 Vulnerable ·Red Hat
- cpe:2.3:o:redhat:enterprise_linux_update_services_for_sap_solutions:9.6:*:*:*:*:*:*:* Versions 9.6 Vulnerable ·Red Hat
Remediation
- Fix · GHSA-69r9-qgr7-g2wj org.apache.tomcat:tomcat-tribes (Maven) Fixed in 11.0.21 Advisory →
- Fix · GHSA-69r9-qgr7-g2wj org.apache.tomcat:tomcat-tribes (Maven) Fixed in 10.1.54 Advisory →
- Fix · GHSA-69r9-qgr7-g2wj org.apache.tomcat:tomcat-tribes (Maven) Fixed in 9.0.117 Advisory →
- Fix · GHSA-69r9-qgr7-g2wj org.apache.tomcat:tomcat (Maven) Fixed in 11.0.21 Advisory →
- Fix · GHSA-69r9-qgr7-g2wj org.apache.tomcat:tomcat (Maven) Fixed in 10.1.54 Advisory →
- Fix · GHSA-69r9-qgr7-g2wj org.apache.tomcat:tomcat (Maven) Fixed in 9.0.117 Advisory →
Red Hat 13 advisories
- RHSA-2026:39188 Released 2026-07-14 · Red Hat rating ImportantRed 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 ImportantRed 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 Importanttomcat 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 10 more Red Hat advisories
- RHSA-2026:37137 Released 2026-07-09 · Red Hat rating Importanttomcat 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 Importanttomcat 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 Importanttomcat 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 Importanttomcat 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 Importanttomcat 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 Importanttomcat 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 Importanttomcat 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 Importanttomcat9 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 Importanttomcat 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 Importanttomcat9 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
Vendor assessments
Red Hat
Red Hat rating: Important. Red Hat's page for this CVE →
| Product | Status | Plan or fix |
|---|---|---|
| Red Hat Enterprise Linux 6 | Affected | No fix planned: Out of support scope |
| Red Hat Enterprise Linux 9 | Affected | No 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 7.0 on RHEL 10 | Fixed | RHSA-2026:39188 |
| Red Hat JBoss Web Server 7.0 on RHEL 8 | Fixed | RHSA-2026:39188 |
| Red Hat JBoss Web Server 7.0 on RHEL 9 | Fixed | RHSA-2026:39188 |
| Red Hat JBoss Web Server 7.0.0 | Fixed | RHSA-2026:39189 |
Not affected: 6 products
- Red Hat Enterprise Linux 8
- Red Hat JBoss Web Server 5
- Red Hat JBoss Web Server 6
- 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
- 2026-08-04 Added to CISA KEV
- 2026-10-02 Threatist record created from CVE-2026-34486
- 2026-10-03 Alias added: GHSA-69r9-qgr7-g2wj
- 2026-10-25 EPSS moved to the 99th percentile and above
References
Advisory 21
- https://lists.apache.org/thread/9510k5p5zdvt9pkkgtyp85mvwxo2qrly
- https://nvd.nist.gov/vuln/detail/CVE-2026-34486
- https://www.vicarius.io/vsociety/posts/cve-2026-34486-detection-script-rce-on-apache-tomcat
- https://www.vicarius.io/vsociety/posts/cve-2026-34486-mitigation-script-rce-on-apache-tomcat
- https://access.redhat.com/errata/RHSA-2026:36787
- https://access.redhat.com/errata/RHSA-2026:36788
- https://access.redhat.com/errata/RHSA-2026:36789
- https://access.redhat.com/errata/RHSA-2026:36790
- https://access.redhat.com/errata/RHSA-2026:36876
- https://access.redhat.com/errata/RHSA-2026:36877
- https://access.redhat.com/errata/RHSA-2026:36878
- https://access.redhat.com/errata/RHSA-2026:36879
- https://access.redhat.com/errata/RHSA-2026:37136
- https://access.redhat.com/errata/RHSA-2026:37137
- https://access.redhat.com/errata/RHSA-2026:38505
- https://access.redhat.com/errata/RHSA-2026:39188
- https://access.redhat.com/errata/RHSA-2026:39189
- https://access.redhat.com/security/cve/CVE-2026-34486
- https://bugzilla.redhat.com/show_bug.cgi?id=2457027
- https://security.access.redhat.com/data/csaf/v2/vex/2026/cve-2026-34486.json
- https://socradar.io/blog/snowlight-government-chinese-campaign/
Other 8
- https://github.com/apache/tomcat/commit/1fab40ccc752e22639eccfe290d5624afad7eccd
- https://github.com/apache/tomcat/commit/55f3eb9148233054fccfdf761141c6894a050be1
- https://github.com/apache/tomcat/commit/776e12b3e2b0b4507b8a3b62c187ceb0b74bf418
- https://github.com/apache/tomcat
- https://tomcat.apache.org/security-10.html#Fixed_in_Apache_Tomcat_10.1.54
- https://tomcat.apache.org/security-11.html#Fixed_in_Apache_Tomcat_11.0.21
- https://tomcat.apache.org/security-9.html#Fixed_in_Apache_Tomcat_9.0.117
- https://www.herodevs.com/vulnerability-directory/cve-2026-34486
More Apache Tomcat vulnerabilities
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- 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-2023-23979 The HTTP/2 protocol allows a denial of service (server resource consumption) because… KEVCVSS 3.1HIGH 7.5
Sources
- CVE-2026-34486 · CVE Program
- CVE-2026-34486 · NVD
- CISA Known Exploited Vulnerabilities
- FIRST EPSS
- GHSA-69r9-qgr7-g2wj · GitHub Advisory Database · CC BY 4.0
- CVE-2026-34486 · Red Hat security data · CC BY 4.0
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