CVE-2026-53404: Apache Tomcat: Bad ornext processing in RewriteValve

Published Jun 29, 2026
·
Updated

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.

Affected Software

11 affected componentsFixes available
Apache Tomcat>=11.0.0-M1<=11.0.22
Apache Tomcat>=10.1.0-M1<=10.1.55
Apache Tomcat>=9.0.0.M1<=9.0.118
Apache Tomcat>=8.5.0<=8.5.100
Apache Tomcat>=8.5.0<=8.5.100
Apache Tomcat>=9.0.0<9.0.119
Apache Tomcat>=10.1.0<10.1.56
Apache Tomcat>=11.0.0<11.0.23
debian/tomcat10<=10.1.55-1~deb12u1, <=10.1.55-1~deb13u1, <=10.1.55-1
debian/tomcat11<=11.0.22-1~deb13u1, <=11.0.22-2
debian/tomcat9<=9.0.43-2~deb11u10
9.0.118-0+deb11u19.0.70-29.0.95-19.0.118-1

Remediation

Recommended actions to resolve this vulnerability, in priority order.

  1. Upgrade

    Upgrade debian/tomcat9 to a version that resolves this vulnerability.

    Fixed in 9.0.118-0+deb11u1Fixed in 9.0.70-2Fixed in 9.0.95-1Fixed in 9.0.118-1
  2. Upgrade

    Upgrade Apache Tomcat to a version that resolves this vulnerability.

    Fixed in 11.0.23
  3. Upgrade

    Upgrade Apache Tomcat to a version that resolves this vulnerability.

    Fixed in 10.1.56
  4. Upgrade

    Upgrade Apache Tomcat to a version that resolves this vulnerability.

    Fixed in 9.0.119

Event History

Jun 29, 2026
CVE Published
via MITRE·08:39 PM
Data Sourced
via MITRE·08:39 PM
DescriptionWeakness
Data Sourced
via Red Hat·09:02 PM
DescriptionSeverityAffected Software
Data Sourced
via NVD·09:16 PM
DescriptionSeverityWeaknessAffected Software
Jul 16, 2026
Data Sourced
via Ubuntu·04:41 PM
RemedyDescriptionSeverityAffected Software
Data Sourced
via Debian·04:42 PM
DescriptionAffected Software
Jul 17, 2026
Data Sourced
via Launchpad·04:43 PM
Description
Free Weekly Intel

Don't miss critical vulnerabilities

Join thousands of security professionals who receive our weekly digest of trending CVEs, zero-days, and exploited vulnerabilities.

No spam. Unsubscribe anytime.

Frequently Asked Questions

1

What is the severity of CVE-2026-53404?

CVE-2026-53404 has a risk level of 30, indicating a moderate vulnerability.

2

How do I fix CVE-2026-53404?

To mitigate CVE-2026-53404, upgrade Apache Tomcat to the latest version beyond 11.0.22, 10.1.55, or 9.0.x where the vulnerability is patched.

3

What versions of Apache Tomcat are affected by CVE-2026-53404?

CVE-2026-53404 impacts Apache Tomcat versions from 11.0.0-M1 through 11.0.22, 10.1.0-M1 through 10.1.55, and others within the 9.0.x series.

4

What type of vulnerability is CVE-2026-53404?

CVE-2026-53404 is categorized as a control flow implementation vulnerability affecting the RewriteValve component in Apache Tomcat.

5

What is the impact of CVE-2026-53404 on Apache Tomcat?

The vulnerability can lead to improper condition evaluation in the RewriteValve, potentially causing unintended request processing behavior.

Company

Resources

Contact

SecAlerts Pty Ltd.
132 Wickham Terrace
Fortitude Valley,
QLD 4006, Australia
info@secalerts.co
By using SecAlerts services, you agree to our services end-user license agreement. This website is safeguarded by reCAPTCHA and governed by the Google Privacy Policy and Terms of Service. All names, logos, and brands of products are owned by their respective owners, and any usage of these names, logos, and brands for identification purposes only does not imply endorsement. If you possess any content that requires removal, please get in touch with us.
© 2026 SecAlerts Pty Ltd.
ABN: 70 645 966 203, ACN: 645 966 203