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Exposure of Sensitive Information to an Unauthorized Actor

CVE-2026-42498

High
7.3/10

Summary

Exposure of HTTP Authentication Header to unexpected hosts during WebSocket authentication vulnerability in Apache Tomcat. This issue affects Apache Tomcat versions 7.0.83 through 7.0.109, 8.5.24 through 8.5.100, 9.0.2 through 9.0.117, 10.1.0-M1 through 10.1.54, and 11.0.0-M1 through 11.0.21.

  • LOW
  • NETWORK
  • LOW
  • UNCHANGED
  • NONE
  • NONE
  • LOW
  • LOW

CWE-200 - Information Exposure

An information exposure vulnerability is categorized as an information flow (IF) weakness, which can potentially allow unauthorized access to otherwise classified information in the application, such as confidential personal information (demographics, financials, health records, etc.), business secrets, and the application's internal environment.

References

Advisory Timeline

  • Published