CVE-2026-86247

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...

DEBIAN-CVE-2026-86247

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-2026-86247

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...

UBUNTU-CVE-2026-86247

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-2026-86247 Apache Tomcat Native: Client certificate requirements can be down-graded

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-2026-86247

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-2026-86247

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-2026-86247 Apache Tomcat Native: Client certificate requirements can be down-graded

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-2026-86247

A race condition within a thread in Apache Tomcat Native allows client certificate verification requirements to be down-graded for certain configurations. This vulnerability affects versions 2.0.0 through 2.0.15 and 1.3.0 through 1.3.8 , with unsupported versions potentially impacted. To remediat...

CVE-2026-86247 Apache Tomcat Native: Client certificate requirements can be down-graded

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...

EUVD-2026-85270

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...

Fixed in Apache Tomcat Native Connector 2.0.16 / 1.3.9

Important: Client certificate requirements can be down-graded CVE-2026-86247 A race condition allowed client certificate verification requirements to be down-graded for some configurations. This was fixed with commit fb688de4 2.0.x and 3dc73c11 1.3.x. This issue was reported to the Tomcat securit...

DEBIAN-CVE-2026-77762

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-2026-77762

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...

UBUNTU-CVE-2026-77762

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-2026-77762

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...

openssl: openssl: Denial of Service via race condition in certificate extension caching

A flaw was found in OpenSSL. A remote, unauthenticated attacker can cause a Denial of Service DoS by initiating concurrent connections to a multi-threaded Transport Layer Security TLS client or server verifying certificates. Due to improper synchronization when multiple threads simultaneously...

EUVD-2026-85227

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-2026-77762 Apache Tomcat: Stale HPACK emitter injects trailers into recycled pooled Request

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-2026-77762

Apache Tomcat is vulnerable to a race condition caused by concurrent execution using a shared resource with improper synchronization. This flaw allows an attacker to inject trailer fields into another HTTP/2 request via a stale HPACK emitter injecting into a recycled pooled request. Affected vers...