Apache Tomcat: EncryptInterceptor requirements not clearly documented
Key facts
- Attack vector
- Network
- Privileges required
- None
- User interaction
- None
- Attack complexity
- Low
- Impact type
- —
- Confidentiality · integrity · availability
- High · High · None
- Fix status
- Partial Red Hat: 10 fixed, 4 without a fix
Attack profile from CVSS 3.1 · CISA ADP. Fix status from CNA and Red Hat.
Summary
Insufficient Technical Documentation vulnerability in Apache Tomcat since the requirements to securely configure the EncryptInterceptor were not clearly documented. This issue affects Apache Tomcat: from 11.0.0-M1 through 11.0.23, from 10.1.0-M1 through 10.1.56, from 9.0.13 through 9.0.119, from 8.5.38 through 8.5.100, from 7.0.100 through 7.0.109. Other versions that have reached end of support may also be affected. Users are recommended to upgrade to version 11.0.24, 10.1.57 or 9.0.120 which fix the issue.
Why it matters now
SSVC decision points
CISA ADP · SSVC 2.0.3
- Exploitation
- None
- Automatable
- Yes
- Technical impact
- Total
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 | 11.0.0-M1 – 11.0.23; 10.1.0-M1 – 10.1.56; 9.0.13 – 9.0.119; 8.5.38 – 8.5.100; 7.0.100 – 7.0.109 | — | No fix listed | CNA |
- Apache Tomcat VendorApache Affected 11.0.0-M1 – 11.0.23; 10.1.0-M1 – 10.1.56; 9.0.13 – 9.0.119; 8.5.38 – 8.5.100; 7.0.100 – 7.0.109 Fixed in — No fix listed CNA
CPE configurations NVD · 1
| CPE | Versions | Role | Vendor |
|---|---|---|---|
| cpe:2.3:a:apache:tomcat:*:*:*:*:*:*:*:* | 7.0.100 – 7.0.109; 8.5.38 – 8.5.100; 9.0.13 – 9.0.119; 10.1.0 – 10.1.56; 11.0.0 – 11.0.23 | Vulnerable | Apache |
- cpe:2.3:a:apache:tomcat:*:*:*:*:*:*:*:* Versions 7.0.100 – 7.0.109; 8.5.38 – 8.5.100; 9.0.13 – 9.0.119; 10.1.0 – 10.1.56; 11.0.0 – 11.0.23 Vulnerable ·Apache
Remediation
Red Hat 10 advisories
- RHSA-2026:68651 Released 2026-09-18 · Red Hat rating Moderatetomcat9 security update
- Red Hat Enterprise Linux AppStream (v. 10) tomcat9-1:9.0.120-1.el10_2, tomcat9-admin-webapps-1:9.0.120-1.el10_2, tomcat9-docs-webapp-1:9.0.120-1.el10_2 +5
- RHSA-2026:68677 Released 2026-09-17 · Red Hat rating Importanttomcat security update
- Red Hat Enterprise Linux AppStream (v. 8) tomcat-1:9.0.120-1.el8_10, tomcat-admin-webapps-1:9.0.120-1.el8_10, tomcat-docs-webapp-1:9.0.120-1.el8_10 +5
- RHSA-2026:68660 Released 2026-09-17 · Red Hat rating Moderatetomcat security, bug fix, and enhancement update
- Red Hat Enterprise Linux AppStream (v. 9) tomcat-1:9.0.120-2.el9_8, tomcat-admin-webapps-1:9.0.120-2.el9_8, tomcat-docs-webapp-1:9.0.120-2.el9_8 +5
Show 7 more Red Hat advisories
- RHSA-2026:68659 Released 2026-09-17 · Red Hat rating Importanttomcat security update
- Red Hat Enterprise Linux AppStream EUS (v.9.6) tomcat-1:9.0.120-1.el9_6, tomcat-admin-webapps-1:9.0.120-1.el9_6, tomcat-docs-webapp-1:9.0.120-1.el9_6 +5
- RHSA-2026:68678 Released 2026-09-17 · Red Hat rating Importanttomcat security update
- Red Hat Enterprise Linux AppStream E4S (v.9.2) tomcat-1:9.0.120-1.el9_2, tomcat-admin-webapps-1:9.0.120-1.el9_2, tomcat-docs-webapp-1:9.0.120-1.el9_2 +5
- RHSA-2026:68679 Released 2026-09-17 · Red Hat rating Importanttomcat security update
- Red Hat Enterprise Linux AppStream E4S (v.9.4) tomcat-1:9.0.120-1.el9_4, tomcat-admin-webapps-1:9.0.120-1.el9_4, tomcat-docs-webapp-1:9.0.120-1.el9_4 +5
- RHSA-2026:68680 Released 2026-09-17 · Red Hat rating Importanttomcat security update
- Red Hat Enterprise Linux AppStream E4S (v.8.8) tomcat-1:9.0.120-1.el8_8, tomcat-admin-webapps-1:9.0.120-1.el8_8, tomcat-docs-webapp-1:9.0.120-1.el8_8 +5
- Red Hat Enterprise Linux AppStream TUS (v.8.8) tomcat-1:9.0.120-1.el8_8, tomcat-admin-webapps-1:9.0.120-1.el8_8, tomcat-docs-webapp-1:9.0.120-1.el8_8 +5
- RHSA-2026:67163 Released 2026-09-14 · Red Hat rating Importanttomcat9 security update
- Red Hat Enterprise Linux AppStream EUS (v. 10.0) tomcat9-1:9.0.120-1.el10_0, tomcat9-admin-webapps-1:9.0.120-1.el10_0, tomcat9-docs-webapp-1:9.0.120-1.el10_0 +5
- RHSA-2026:37767 Released 2026-07-10 · Red Hat rating LowRed Hat Hardened Images RPMs bug fix and enhancement update
- Red Hat Hardened Images tomcat10-1:10.1.57-1.hum1@noarch@public-hummingbird-aarch64-rpms, tomcat10-1:10.1.57-1.hum1@noarch@public-hummingbird-x86_64-rpms, tomcat10-1:10.1.57-1.hum1@src +18
- RHSA-2026:36872 Released 2026-07-08 · Red Hat rating LowRed Hat Hardened Images RPMs bug fix and enhancement update
- Red Hat Hardened Images tomcat11-1:11.0.24-0.1.hum1@noarch@public-hummingbird-aarch64-rpms, tomcat11-1:11.0.24-0.1.hum1@noarch@public-hummingbird-x86_64-rpms, tomcat11-1:11.0.24-0.1.hum1@src +18
Vendor assessments
Red Hat
Red Hat rating: Low. Red Hat's page for this CVE →
| Product | Status | Plan or fix |
|---|---|---|
| Red Hat Enterprise Linux 10 | Affected | No fix yet: Fix deferred |
| Red Hat Enterprise Linux 6 | Affected | No fix planned: Out of support scope |
| Red Hat Enterprise Linux 7 | Affected | No fix planned: Out of support scope |
| Red Hat JBoss Web Server 5 | Affected | No fix yet: Fix deferred |
| Red Hat Enterprise Linux AppStream (v. 10) | Fixed | RHSA-2026:68651 |
| Red Hat Enterprise Linux AppStream (v. 8) | Fixed | RHSA-2026:68677 |
| Red Hat Enterprise Linux AppStream (v. 9) | Fixed | RHSA-2026:68660 |
| Red Hat Enterprise Linux AppStream E4S (v.8.8) | Fixed | RHSA-2026:68680 |
| Red Hat Enterprise Linux AppStream E4S (v.9.2) | Fixed | RHSA-2026:68678 |
| Red Hat Enterprise Linux AppStream E4S (v.9.4) | Fixed | RHSA-2026:68679 |
| Red Hat Enterprise Linux AppStream EUS (v. 10.0) | Fixed | RHSA-2026:67163 |
| Red Hat Enterprise Linux AppStream EUS (v.9.6) | Fixed | RHSA-2026:68659 |
| Red Hat Enterprise Linux AppStream TUS (v.8.8) | Fixed | RHSA-2026:68680 |
| Red Hat Hardened Images | Fixed | RHSA-2026:36872, RHSA-2026:37767 |
Not affected: 4 products
- Red Hat Enterprise Linux 8
- Red Hat Enterprise Linux 9
- Red Hat JBoss Web Server 6
- Red Hat JBoss Web Server 7
Timeline
- 2026-10-02 Threatist record created from CVE-2026-59084
- 2026-10-03 Alias added: GHSA-cwxf-7cw2-7r32
- 2026-11-07 Affected versions changed · Red Hat
References
More Apache Tomcat vulnerabilities
- 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
Sources
- CVE-2026-59084 · CVE Program
- CVE-2026-59084 · NVD
- FIRST EPSS
- GHSA-cwxf-7cw2-7r32 · GitHub Advisory Database · CC BY 4.0
- CVE-2026-59084 · Red Hat security data · CC BY 4.0
This product uses the NVD API but is not endorsed or certified by the NVD. Sources and licences