Vulnerability Monitor

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CVE-2025-53506

Uncontrolled Resource Consumption vulnerability in Apache Tomcat if an HTTP/2 client did not acknowledge the initial settings frame that reduces the maximum permitted concurrent streams. This issue affects Apache Tomcat: from 11.0.0-M1 through 11.0.8, from 10.1.0-M1 through 10.1.42, from 9.0.0.M1 through 9.0.106. The following versions were EOL at the time the CVE was created but are known to be affected: 8.5.0 through 8.5.100. Users are recommended to upgrade to version 11.0.9, 10.1.43 or 9.0.107, which fix the issue.

Published

2025-07-10T20:15:26.970

Last Modified

2025-08-08T13:15:29.780

Status

Modified

Source

[email protected]

Severity

CVSSv3.1: 7.5 (HIGH)

Weaknesses
  • Type: Secondary
    CWE-400
Affected Vendors & Products
Type Vendor Product Version/Range Vulnerable?
Application apache tomcat ≤ 9.0.106 Yes
Application apache tomcat ≤ 10.1.42 Yes
Application apache tomcat ≤ 11.0.8 Yes
References