Authentication Bypass by Primary Weakness Affecting org.apache.tomcat.embed:tomcat-embed-core package, versions [9.0.0.M4,9.0.122)[10.1.0-M1,10.1.60)[11.0.0-M1,11.0.26)
Threat Intelligence
The probability is the direct output of the EPSS model, and conveys an overall sense of the threat of exploitation in the wild. The percentile measures the EPSS probability relative to all known EPSS scores. Note: This data is updated daily, relying on the latest available EPSS model version. Check out the EPSS documentation for more details.
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Test your applications- Snyk IDSNYK-JAVA-ORGAPACHETOMCATEMBED-21716517
- published26 Oct 2026
- disclosed23 Sept 2026
- credit0xCc.zhang
Introduced: 23 Sep 2026
CVE-2026-75973 (opens in a new tab)How to fix?
Upgrade org.apache.tomcat.embed:tomcat-embed-core to version 9.0.122, 10.1.60, 11.0.26 or higher.
Overview
org.apache.tomcat.embed:tomcat-embed-core is a Core Tomcat implementation.
Affected versions of this package are vulnerable to Authentication Bypass by Primary Weakness via the getServerAuthConfig method in SimpleAuthConfigProvider. When Jakarta Authentication uses this provider as the default for multiple web applications, its cached configuration retains the realm of the first application to authenticate a request. An attacker can send requests to another application and have them authenticated against that first realm, potentially gaining access to resources protected by the other application’s intended authentication.