Incorrect Behavior Order: Authorization Before Parsing and Canonicalization Affecting tomcat9-docs-webapp package, versions <1:9.0.120-1.amzn2023.0.1


Severity

Recommended
0.0
medium
0
10

Based on Amazon Linux security rating.

Threat Intelligence

EPSS
1.53% (73rd percentile)

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  • Snyk IDSNYK-AMZN2023-TOMCAT9DOCSWEBAPP-18062823
  • published21 Jul 2026
  • disclosed29 Jun 2026

Introduced: 29 Jun 2026

CVE-2026-55956  (opens in a new tab)
CWE-551  (opens in a new tab)

How to fix?

Upgrade Amazon-Linux:2023 tomcat9-docs-webapp to version 1:9.0.120-1.amzn2023.0.1 or higher.
This issue was patched in ALAS2023-2026-1945.

NVD Description

Note: Versions mentioned in the description apply only to the upstream tomcat9-docs-webapp package and not the tomcat9-docs-webapp package as distributed by Amazon-Linux. See How to fix? for Amazon-Linux:2023 relevant fixed versions and status.

Improper Authorization vulnerability in Apache Tomcat leads to security constraints specified for the default servlet ignoring any method or method omission configured as part of the constraint.

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, from 7.0.0 through 7.0.109. Other versions that have reached end of support may also be affected.

Users are recommended to upgrade to version 11.0.23, 10.1.56 or 9.0.119, which fix the issue.

CVSS Base Scores

version 3.1