CVE-2026-73581

Apache Tomcat is vulnerable to an Improper Check for Certificate Revocation issue in both the OpenSSL and OpenSSL-FFM TLS implementations. The root cause is that these implementations ignore Certificate Revocation Lists (CRLs) when a certificate is used with a keystore . This affects versions 11....

EUVD-2026-85222

Improper Check for Certificate Revocation vulnerability in Apache Tomcat. Both the OpenSSL and OpenSSL-FFM TLS implementations ignore CRLs when certificate uses a keystore. This issue affects Apache Tomcat: from 11.0.0-M1 through 11.0.25, from 10.1.0-M1 through 10.1.58, from 9.0.0-M1 through...

CVE-2026-86243: Buffer Over-read

Buffer over-read vulnerability in Apache Tomcat Native during the TLS handshake permits a malicious user to trigger a DoS via a JVM crash. This issue affects Apache Tomcat Native: from 2.0.0 through 2.0.15, from 1.3.0 through 1.3.8. Earlier, unsupported versions may also be affected. Users are...

CVE-2026-86243: Buffer Over-read

Buffer over-read vulnerability in Apache Tomcat Native during the TLS handshake permits a malicious user to trigger a DoS via a JVM crash. This issue affects Apache Tomcat Native: from 2.0.0 through 2.0.15, from 1.3.0 through 1.3.8. Earlier, unsupported versions may also be affected. Users are...

Apache Tomcat 9.0.0.M1 < 9.0.122 multiple vulnerabilities

The version of Tomcat installed on the remote host is prior to 9.0.122. It is, therefore, affected by multiple vulnerabilities as referenced in the fixedinapachetomcat9.0.122security-9 advisory. - CLIENTCERT authentication does not fail as expected for some scenarios when soft fail is disabled...

CVE-2026-86246: Initialization of a Resource with an Insecure Default

Initialization of a resource with an insecure default vulnerability in Apache Tomcat Native enabled insecure options by default including ALLOWCLIENTRENEGOTIATION, NOEXTENDEDMASTERSECRET, IGNOREUNEXPECTEDEOF and ALLOWNODHEKEX. This issue affects Apache Tomcat Native: from 2.0.0 through 2.0.15, fr...

CVE-2026-86247: Race Condition within a Thread

Race condition within a thread vulnerability in Apache Tomcat Native allowed client certificate verification requirements to be down-graded for some configurations. This issue affects Apache Tomcat Native: from 2.0.0 through 2.0.15, from 1.3.0 through 1.3.8. Unsupported versions may also be...

CVE-2026-86350: Inconsistent Interpretation of HTTP Requests

Inconsistent interpretation of HTTP/2 requests 'HTTP Request/Response smuggling' vulnerability in Apache Tomcat caused by a regression in fix for CVE-2026-41293 can trigger request header mix-up. This issue affects Apache Tomcat: from 11.0.22 through 11.0.25, from 10.1.55 through 10.1.59, from...

CVE-2026-86247: Race Condition within a Thread

Race condition within a thread vulnerability in Apache Tomcat Native allowed client certificate verification requirements to be down-graded for some configurations. This issue affects Apache Tomcat Native: from 2.0.0 through 2.0.15, from 1.3.0 through 1.3.8. Unsupported versions may also be...

CVE-2026-86246: Initialization of a Resource with an Insecure Default

Initialization of a resource with an insecure default vulnerability in Apache Tomcat Native enabled insecure options by default including ALLOWCLIENTRENEGOTIATION, NOEXTENDEDMASTERSECRET, IGNOREUNEXPECTEDEOF and ALLOWNODHEKEX. This issue affects Apache Tomcat Native: from 2.0.0 through 2.0.15, fr...

CVE-2026-73581: Improper Check for Certificate Revocation

Improper Check for Certificate Revocation vulnerability in Apache Tomcat. Both the OpenSSL and OpenSSL-FFM TLS implementations ignore CRLs when certificate uses a keystore. This issue affects Apache Tomcat: from 11.0.0-M1 through 11.0.25, from 10.1.0-M1 through 10.1.59, from 9.0.0-M1 through...

CVE-2026-75973: Improper Authentication

Improper Authentication vulnerability in Apache Tomcat. When Jakarta Authentication was configured with SimpleAuthConfigProvider as the default provider and multiple web application used that provider, the realm for the first web application to authenticate a request would be used for all web...

CVE-2026-77756: Inconsistent Interpretation of HTTP Requests

Inconsistent Interpretation of HTTP Requests 'HTTP Request/Response Smuggling' vulnerability in Apache Tomcat caused by processing the transfer-encoding header for an HTTP/1.0 request may allow an attacker to cause one request from another user to fail when Tomcat is located behind a reverse prox...

CVE-2026-77762: Concurrent Execution using Shared Resource with Improper Synchronization

Concurrent Execution using Shared Resource with Improper Synchronization 'Race Condition' vulnerability in Apache Tomcat allows an attacker to inject trailer fields into another HTTP/2 request. This issue affects Apache Tomcat: from 11.0.0-M1 through 11.0.25, from 10.1.0-M1 through 10.1.59, from...

CVE-2026-77791: Uncontrolled Resource Consumption

Uncontrolled Resource Consumption vulnerability in Apache Tomcat during sending of WebSocket close message enabled a DoS attack. This issue affects Apache Tomcat: from 11.0.0-M5 through 11.0.25, from 10.1.8 through 10.1.59, from 9.0.74 through 9.0.121. The following versions were EOL at the time...

CVE-2026-78383: Allocation of Resources Without Limits or Throttling

Allocation of resources without limits or throttling vulnerability in Apache Tomcat allows an unauthenticated AJP request to pin an AJP processing thread leading to denial of service. This issue affects Apache Tomcat: from 11.0.0-M1 through 11.0.25, from 10.1.0-M1 through 10.1.59, from 9.0.0.M1...

CVE-2026-78437: Incomplete Cleanup

Incomplete cleanup vulnerability in Apache Tomcat allows a malformed request to potentially depends on timing cause one request from another user to fail. This issue affects Apache Tomcat: from 11.0.19 through 11.0.25, from 10.1.53 through 10.1.59, from 9.0.116 through 9.0.121. Users are...

CVE-2026-79677: Missing Release of Resource after Effective Lifetime

Missing release of resource after effective lifetime, Comparison using wrong factors vulnerability in Apache Tomcat allows a denial of service as a result of lost time outs for asynchronous WebSocket writes. This issue affects Apache Tomcat: from 11.0.0-M1 through 11.0.25, from 10.1.0-M1 through...

CVE-2026-86248: Improper Authentication

CLIENTCERT authentication does not fail as expected for some scenarios when soft fail is disabled vulnerability in Apache Tomcat. This issue affects Apache Tomcat: from 11.0.0-M14 through 11.0.25, from 10.1.22 through 10.1.59, from 9.0.92 through 9.0.121. Users are recommended to upgrade to versi...

CVE-2026-87022: Improper Handling of Length Parameter Inconsistency

Improper handling of length parameter inconsistency vulnerability in Apache Tomcat allows WebSocket message smuggling when per-message-deflate is used. This issue affects Apache Tomcat: from 11.0.0-M1 through 11.0.25, from 10.1.0-M1 through 10.1.59, from 9.0.0.M1 through 9.0.121. The following...