Apache Tomcat: Bad ornext processing in RewriteValve
Key facts
- Attack vector
- Network
- Privileges required
- None
- User interaction
- None
- Attack complexity
- Low
- Impact type
- —
- Confidentiality · integrity · availability
- Low · Low · Low
- Fix status
- Partial Red Hat: 18 fixed, 6 without a fix
Attack profile from CVSS 3.1 · CISA ADP. Fix status from CNA, GitHub and Red Hat.
Summary
Always-Incorrect Control Flow Implementation vulnerability in Apache Tomcat's rewrite valve meant that if the first condition in an OR chain matched, subsequent non-OR conditions were skipped. This issue affects Apache Tomcat: from 11.0.0-M1 through 11.0.22, from 10.1.0-M1 through 10.1.55, from 9.0.0.M1 through 9.0.118, from 8.5.0 through 8.5.100. Other versions that have reached end of support may also be affected. Users are recommended to upgrade to version 11.0.23, 10.1.56 or 9.0.119, which fix the issue.
Why it matters now
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
| Vendor | Product | Affected versions | Fixed in | Status | Source |
|---|---|---|---|---|---|
| Apache | Apache Tomcat | 11.0.0-M1 – 11.0.22; 10.1.0-M1 – 10.1.55; 9.0.0.M1 – 9.0.118; 8.5.0 – 8.5.100 | — | Patch available | CNA |
| — | org.apache.tomcat.embed:tomcat-embed-core (Maven) | 11.0.0-M1 to before 11.0.23 | 11.0.23 | Patch available | GHSA-h792-v28v-ppgr |
| — | org.apache.tomcat.embed:tomcat-embed-core (Maven) | 10.1.0-M1 to before 10.1.56 | 10.1.56 | Patch available | GHSA-h792-v28v-ppgr |
| — | org.apache.tomcat.embed:tomcat-embed-core (Maven) | 9.0.0.M1 to before 9.0.119 | 9.0.119 | Patch available | GHSA-h792-v28v-ppgr |
| — | org.apache.tomcat.embed:tomcat-embed-core (Maven) | 8.5.0 – 8.5.100 | — | No fix listed | GHSA-h792-v28v-ppgr |
| — | org.apache.tomcat:tomcat (Maven) | 11.0.0-M1 to before 11.0.23 | 11.0.23 | Patch available | GHSA-h792-v28v-ppgr |
| — | org.apache.tomcat:tomcat (Maven) | 10.1.0-M1 to before 10.1.56 | 10.1.56 | Patch available | GHSA-h792-v28v-ppgr |
| — | org.apache.tomcat:tomcat (Maven) | 9.0.0.M1 to before 9.0.119 | 9.0.119 | Patch available | GHSA-h792-v28v-ppgr |
| — | org.apache.tomcat:tomcat (Maven) | 8.5.0 – 8.5.100 | — | No fix listed | GHSA-h792-v28v-ppgr |
| — | org.apache.tomcat:tomcat-catalina (Maven) | 11.0.0-M1 to before 11.0.23 | 11.0.23 | Patch available | GHSA-h792-v28v-ppgr |
| — | org.apache.tomcat:tomcat-catalina (Maven) | 10.1.0-M1 to before 10.1.56 | 10.1.56 | Patch available | GHSA-h792-v28v-ppgr |
| — | org.apache.tomcat:tomcat-catalina (Maven) | 9.0.0.M1 to before 9.0.119 | 9.0.119 | Patch available | GHSA-h792-v28v-ppgr |
| — | org.apache.tomcat:tomcat-catalina (Maven) | 8.5.0 – 8.5.100 | — | No fix listed | GHSA-h792-v28v-ppgr |
- Apache Tomcat VendorApache Affected 11.0.0-M1 – 11.0.22; 10.1.0-M1 – 10.1.55; 9.0.0.M1 – 9.0.118; 8.5.0 – 8.5.100 Fixed in — Patch available CNA
- org.apache.tomcat.embed:tomcat-embed-core (Maven) Vendor— Affected 11.0.0-M1 to before 11.0.23 Fixed in 11.0.23 Patch available GHSA-h792-v28v-ppgr
- org.apache.tomcat.embed:tomcat-embed-core (Maven) Vendor— Affected 10.1.0-M1 to before 10.1.56 Fixed in 10.1.56 Patch available GHSA-h792-v28v-ppgr
- org.apache.tomcat.embed:tomcat-embed-core (Maven) Vendor— Affected 9.0.0.M1 to before 9.0.119 Fixed in 9.0.119 Patch available GHSA-h792-v28v-ppgr
- org.apache.tomcat.embed:tomcat-embed-core (Maven) Vendor— Affected 8.5.0 – 8.5.100 Fixed in — No fix listed GHSA-h792-v28v-ppgr
- org.apache.tomcat:tomcat (Maven) Vendor— Affected 11.0.0-M1 to before 11.0.23 Fixed in 11.0.23 Patch available GHSA-h792-v28v-ppgr
- org.apache.tomcat:tomcat (Maven) Vendor— Affected 10.1.0-M1 to before 10.1.56 Fixed in 10.1.56 Patch available GHSA-h792-v28v-ppgr
- org.apache.tomcat:tomcat (Maven) Vendor— Affected 9.0.0.M1 to before 9.0.119 Fixed in 9.0.119 Patch available GHSA-h792-v28v-ppgr
- org.apache.tomcat:tomcat (Maven) Vendor— Affected 8.5.0 – 8.5.100 Fixed in — No fix listed GHSA-h792-v28v-ppgr
- org.apache.tomcat:tomcat-catalina (Maven) Vendor— Affected 11.0.0-M1 to before 11.0.23 Fixed in 11.0.23 Patch available GHSA-h792-v28v-ppgr
- org.apache.tomcat:tomcat-catalina (Maven) Vendor— Affected 10.1.0-M1 to before 10.1.56 Fixed in 10.1.56 Patch available GHSA-h792-v28v-ppgr
- org.apache.tomcat:tomcat-catalina (Maven) Vendor— Affected 9.0.0.M1 to before 9.0.119 Fixed in 9.0.119 Patch available GHSA-h792-v28v-ppgr
- org.apache.tomcat:tomcat-catalina (Maven) Vendor— Affected 8.5.0 – 8.5.100 Fixed in — No fix listed GHSA-h792-v28v-ppgr
CPE configurations NVD · 1
| CPE | Versions | Role | Vendor |
|---|---|---|---|
| cpe:2.3:a:apache:tomcat:*:*:*:*:*:*:*:* | 8.5.0 – 8.5.100; 9.0.0 to before 9.0.119; 10.1.0 to before 10.1.56; 11.0.0 to before 11.0.23 | Vulnerable | Apache |
- cpe:2.3:a:apache:tomcat:*:*:*:*:*:*:*:* Versions 8.5.0 – 8.5.100; 9.0.0 to before 9.0.119; 10.1.0 to before 10.1.56; 11.0.0 to before 11.0.23 Vulnerable ·Apache
Remediation
- Fix · GHSA-h792-v28v-ppgr org.apache.tomcat.embed:tomcat-embed-core (Maven) Fixed in 11.0.23 Advisory →
- Fix · GHSA-h792-v28v-ppgr org.apache.tomcat.embed:tomcat-embed-core (Maven) Fixed in 10.1.56 Advisory →
- Fix · GHSA-h792-v28v-ppgr org.apache.tomcat.embed:tomcat-embed-core (Maven) Fixed in 9.0.119 Advisory →
- Fix · GHSA-h792-v28v-ppgr org.apache.tomcat:tomcat (Maven) Fixed in 11.0.23 Advisory →
- Fix · GHSA-h792-v28v-ppgr org.apache.tomcat:tomcat (Maven) Fixed in 10.1.56 Advisory →
- Fix · GHSA-h792-v28v-ppgr org.apache.tomcat:tomcat (Maven) Fixed in 9.0.119 Advisory →
- Fix · GHSA-h792-v28v-ppgr org.apache.tomcat:tomcat-catalina (Maven) Fixed in 11.0.23 Advisory →
- Fix · GHSA-h792-v28v-ppgr org.apache.tomcat:tomcat-catalina (Maven) Fixed in 10.1.56 Advisory →
- Fix · GHSA-h792-v28v-ppgr org.apache.tomcat:tomcat-catalina (Maven) Fixed in 9.0.119 Advisory →
Red Hat 14 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 11 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-2026:49951 Released 2026-08-05 · Red Hat rating ModerateRed Hat JBoss Web Server 7.0.1 release and security update
- Red Hat JBoss Web Server 7.0 on RHEL 10 jws7-tomcat-11.0.21-6.redhat_00005.1.el10jws, jws7-tomcat-admin-webapps-11.0.21-6.redhat_00005.1.el10jws, jws7-tomcat-docs-webapp-11.0.21-6.redhat_00005.1.el10jws +7
- Red Hat JBoss Web Server 7.0 on RHEL 8 jws7-tomcat-11.0.21-6.redhat_00005.1.el8jws, jws7-tomcat-admin-webapps-11.0.21-6.redhat_00005.1.el8jws, jws7-tomcat-docs-webapp-11.0.21-6.redhat_00005.1.el8jws +7
- Red Hat JBoss Web Server 7.0 on RHEL 9 jws7-tomcat-11.0.21-6.redhat_00005.1.el9jws, jws7-tomcat-admin-webapps-11.0.21-6.redhat_00005.1.el9jws, jws7-tomcat-docs-webapp-11.0.21-6.redhat_00005.1.el9jws +7
- RHSA-2026:49952 Released 2026-08-05 · Red Hat rating ModerateRed Hat JBoss Web Server 7.0.1 release and security update
- Red Hat JBoss Web Server 7.0.1
- RHSA-2026:43401 Released 2026-07-22 · Red Hat rating ImportantRed Hat JBoss Web Server 6.2.4 release and security update
- Red Hat JBoss Web Server 6.2 on RHEL 10 jws6-tomcat-10.1.49-15.redhat_00013.1.el10jws, jws6-tomcat-admin-webapps-10.1.49-15.redhat_00013.1.el10jws, jws6-tomcat-docs-webapp-10.1.49-15.redhat_00013.1.el10jws +7
- Red Hat JBoss Web Server 6.2 on RHEL 8 jws6-tomcat-10.1.49-15.redhat_00013.1.el8jws, jws6-tomcat-admin-webapps-10.1.49-15.redhat_00013.1.el8jws, jws6-tomcat-docs-webapp-10.1.49-15.redhat_00013.1.el8jws +7
- Red Hat JBoss Web Server 6.2 on RHEL 9 jws6-tomcat-10.1.49-15.redhat_00013.1.el9jws, jws6-tomcat-admin-webapps-10.1.49-15.redhat_00013.1.el9jws, jws6-tomcat-docs-webapp-10.1.49-15.redhat_00013.1.el9jws +7
- RHSA-2026:43402 Released 2026-07-22 · Red Hat rating ImportantRed Hat JBoss Web Server 6.2.4 release and security update
- Red Hat JBoss Web Server 6.2.4
- RHSA-2026:32960 Released 2026-06-29 · Red Hat rating CriticalRed Hat Hardened Images RPMs bug fix and enhancement update
- Red Hat Hardened Images tomcat11-1:11.0.23-0.1.hum1@noarch@public-hummingbird-aarch64-rpms, tomcat11-1:11.0.23-0.1.hum1@noarch@public-hummingbird-x86_64-rpms, tomcat11-1:11.0.23-0.1.hum1@src +18
- RHSA-2026:29203 Released 2026-06-24 · Red Hat rating CriticalRed Hat Hardened Images RPMs bug fix and enhancement update
- Red Hat Hardened Images tomcat10-1:10.1.56-1.hum1@noarch@public-hummingbird-aarch64-rpms, tomcat10-1:10.1.56-1.hum1@noarch@public-hummingbird-x86_64-rpms, tomcat10-1:10.1.56-1.hum1@src +18
Fixed in the same release
Records fixed by the same vendor advisory or release, as the CNA lists them.
- Release ·
Apache Tomcat 8.0.0
2 records Highest priority Priority MEDIUM 1 MEDIUM, 1 LOW
Other records, highest priority first
- TI-2026-39931 Apache Tomcat: Logged effective web.xml is incompletePriority MEDIUM 48
Vendor assessments
Red Hat
Red Hat rating: Moderate. 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 yet: Fix deferred |
| Red Hat Enterprise Linux 7 | Affected | No fix yet: Fix deferred |
| Red Hat Enterprise Linux 8 | Affected | No fix yet: Fix deferred |
| Red Hat Enterprise Linux 9 | Affected | No fix yet: Fix deferred |
| 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-2026:29203, RHSA-2026:32960 |
| Red Hat JBoss Web Server 6.2 on RHEL 10 | Fixed | RHSA-2026:43401 |
| Red Hat JBoss Web Server 6.2 on RHEL 8 | Fixed | RHSA-2026:43401 |
| Red Hat JBoss Web Server 6.2 on RHEL 9 | Fixed | RHSA-2026:43401 |
| Red Hat JBoss Web Server 6.2.4 | Fixed | RHSA-2026:43402 |
| Red Hat JBoss Web Server 7.0 on RHEL 10 | Fixed | RHSA-2026:49951 |
| Red Hat JBoss Web Server 7.0 on RHEL 8 | Fixed | RHSA-2026:49951 |
| Red Hat JBoss Web Server 7.0 on RHEL 9 | Fixed | RHSA-2026:49951 |
| Red Hat JBoss Web Server 7.0.1 | Fixed | RHSA-2026:49952 |
Timeline
- 2026-10-02 Threatist record created from CVE-2026-53404
- 2026-10-03 Alias added: GHSA-h792-v28v-ppgr
- 2026-10-09 Fix available: RHSA-2026:49952 · Red Hat
- 2026-10-14 EPSS moved to the 50th–90th percentile
- 2026-10-23 Fix available: Red Hat JBoss Web Server 7.0.1 · Red Hat
- 2026-11-04 Fix available: Maven/org.apache.tomcat.embed:[email protected], Maven/org.apache.tomcat.embed:[email protected], Maven/org.apache.tomcat.embed:[email protected] +6 · GHSA-h792-v28v-ppgr
- 2026-11-04 CVSS score added · GHSA-h792-v28v-ppgr
- 2026-11-04 Weakness changed · GHSA-h792-v28v-ppgr
- 2026-11-04 10 new references · GHSA-h792-v28v-ppgr
References
Advisory 3
Other 7
- https://github.com/apache/tomcat/commit/b647cb584cea8bf95e64f5d2526c59ab8fca3225
- https://github.com/apache/tomcat/commit/bbb6219fa5ac185060bef7842cee5fb90230ca00
- https://github.com/apache/tomcat/commit/fe06ae8a71997061596f54189dae1b1b5da75430
- https://github.com/apache/tomcat
- https://tomcat.apache.org/security-10.html
- https://tomcat.apache.org/security-11.html
- https://tomcat.apache.org/security-9.html
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-2026-53404 · CVE Program
- CVE-2026-53404 · NVD
- FIRST EPSS
- GHSA-h792-v28v-ppgr · GitHub Advisory Database · CC BY 4.0
- CVE-2026-53404 · Red Hat security data · CC BY 4.0
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