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...

CVE-2025-53506 Apache Tomcat: DoS via excessive h2 streams at connection start

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...

CVE-2025-53506

CVE-2025-53506 is an Uncontrolled Resource Consumption vulnerability in Apache Tomcat's HTTP/2 handling: if an HTTP/2 client does not acknowledge the initial settings frame, Tomcat may reduce the maximum permitted concurrent streams, enabling a DoS-like condition. Affected versions span Tomcat 11...

CVE-2025-52520 Apache Tomcat: DoS via integer overflow in multipart file upload

For some unlikely configurations of multipart upload, an Integer Overflow vulnerability in Apache Tomcat could lead to a DoS via bypassing of size limits. 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...

CVE-2025-52520 Apache Tomcat: DoS via integer overflow in multipart file upload

For some unlikely configurations of multipart upload, an Integer Overflow vulnerability in Apache Tomcat could lead to a DoS via bypassing of size limits. 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...

CVE-2025-52520 Apache Tomcat: DoS via integer overflow in multipart file upload

For some unlikely configurations of multipart upload, an Integer Overflow vulnerability in Apache Tomcat could lead to a DoS via bypassing of size limits. 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...

CVE-2025-52520

The CVE-2025-52520 entry describes an Integer Overflow DoS in Apache Tomcat triggered by certain multipart upload configurations. Affected branches include Tomcat 11.0.x (11.0.0-M1 to 11.0.8) and older 10.1.x (10.1.0-M1 to 10.1.42) and 9.0.x (9.0.0.M1 to 9.0.106); EOL versions may also be affecte...

CVE-2025-52434 Apache Tomcat: APR/Native Connector crash leading to DoS

Concurrent Execution using Shared Resource with Improper Synchronization 'Race Condition' vulnerability in Apache Tomcat when using the APR/Native connector. This was particularly noticeable with client initiated closes of HTTP/2 connections. This issue affects Apache Tomcat: from 9.0.0.M1 throug...

CVE-2025-52434 Apache Tomcat: APR/Native Connector crash leading to DoS

Concurrent Execution using Shared Resource with Improper Synchronization 'Race Condition' vulnerability in Apache Tomcat when using the APR/Native connector. This was particularly noticeable with client initiated closes of HTTP/2 connections. This issue affects Apache Tomcat: from 9.0.0.M1 throug...

CVE-2025-52434

CVE-2025-52434 is a race-condition DoS in Apache Tomcat when using the APR/Native connector, observed in Tomcat 9.0.0.M1 through 9.0.106 (including older EOL lines) and potentially affecting selected Tomcat 8.x/11.x/10.x configurations via related advisories. The National Vulnerability Database d...

CVE-2025-52434 Apache Tomcat: APR/Native Connector crash leading to DoS

Concurrent Execution using Shared Resource with Improper Synchronization 'Race Condition' vulnerability in Apache Tomcat when using the APR/Native connector. This was particularly noticeable with client initiated closes of HTTP/2 connections. This issue affects Apache Tomcat: from 9.0.0.M1 throug...

BIT-TOMCAT-2025-49125 Apache Tomcat: Security constraint bypass for pre/post-resources

Authentication Bypass Using an Alternate Path or Channel vulnerability in Apache Tomcat. When using PreResources or PostResources mounted other than at the root of the web application, it was possible to access those resources via an unexpected path. That path was likely not to be protected by th...

BIT-TOMCAT-2025-48988 Apache Tomcat: FileUpload large number of parts with headers DoS

Allocation of Resources Without Limits or Throttling vulnerability in Apache Tomcat. This issue affects Apache Tomcat: from 11.0.0 through 11.0.7, from 10.1.0 through 10.1.41, from 9.0.0 through 9.0.105. The following versions were EOL at the time the CVE was created but are known to be affected:...

BIT-TOMCAT-2025-46701 Apache Tomcat: Security constraint bypass for CGI scripts

Improper Handling of Case Sensitivity vulnerability in Apache Tomcat's GCI servlet allows security constraint bypass of security constraints that apply to the pathInfo component of a URI mapped to the CGI servlet. This issue affects Apache Tomcat: from 11.0.0 through 11.0.6, from 10.1.0 through...

BIT-TOMCAT-2025-31651 Apache Tomcat: Bypass of rules in Rewrite Valve

Improper Neutralization of Escape, Meta, or Control Sequences vulnerability in Apache Tomcat. For a subset of unlikely rewrite rule configurations, it was possible for a specially crafted request to bypass some rewrite rules. If those rewrite rules effectively enforced security constraints, those...

BIT-TOMCAT-2025-24813 Apache Tomcat: Potential RCE and/or information disclosure and/or information corruption with partial PUT

Path Equivalence: 'file.Name' Internal Dot leading to Remote Code Execution and/or Information disclosure and/or malicious content added to uploaded files via write enabled Default Servlet in Apache Tomcat. This issue affects Apache Tomcat: from 11.0.0 through 11.0.2, from 10.1.0 through 10.1.34,...

BIT-TOMCAT-2024-56337 Apache Tomcat: RCE due to TOCTOU issue in JSP compilation - CVE-2024-50379 mitigation was incomplete

Time-of-check Time-of-use TOCTOU Race Condition vulnerability in Apache Tomcat. This issue affects Apache Tomcat: from 11.0.0 through 11.0.1, from 10.1.0 through 10.1.33, from 9.0.0 through 9.0.97. The following versions were EOL at the time the CVE was created but are known to be affected: 8.5.0...

BIT-TOMCAT-2024-54677 Apache Tomcat: DoS in examples web application

Uncontrolled Resource Consumption vulnerability in the examples web application provided with Apache Tomcat leads to denial of service. This issue affects Apache Tomcat: from 11.0.0 through 11.0.1, from 10.1.0 through 10.1.33, from 9.0.0 through 9.9.97. The following versions were EOL at the time...

BIT-TOMCAT-2024-52316 Apache Tomcat: Authentication bypass when using Jakarta Authentication API

Unchecked Error Condition vulnerability in Apache Tomcat. If Tomcat is configured to use a custom Jakarta Authentication formerly JASPIC ServerAuthContext component which may throw an exception during the authentication process without explicitly setting an HTTP status to indicate failure, the...

BIT-TOMCAT-2024-50379 Apache Tomcat: RCE due to TOCTOU issue in JSP compilation

Time-of-check Time-of-use TOCTOU Race Condition vulnerability during JSP compilation in Apache Tomcat permits an RCE on case insensitive file systems when the default servlet is enabled for write non-default configuration. This issue affects Apache Tomcat: from 11.0.0 through 11.0.1, from 10.1.0...