EUVD-2026-85236

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...

CVE-2026-87022 Apache Tomcat: WebSocket message smuggling with per-message-deflate

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...

CVE-2026-87022

Apache Tomcat is vulnerable to WebSocket message smuggling due to an improper handling of length parameter inconsistency when the per-message-deflate feature is enabled. This vulnerability affects versions 11.0.0-M1 through 11.0.25 , 10.1.0-M1 through 10.1.59 , and 9.0.0.M1 through 9.0.121 . Addi...

CVE-2026-86350

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-2026-86350 Apache Tomcat: Regression in fix for CVE-2026-41293 can trigger request header mix-up

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...

EUVD-2026-85235

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-2026-86350

Apache Tomcat is vulnerable to an HTTP Request/Response smuggling vulnerability caused by a regression in the fix for CVE-2026-41293 . This issue results in an inconsistent interpretation of HTTP/2 requests , which can trigger a request header mix-up . The vulnerability affects versions 11.0.22 t...

CVE-2026-86350 Apache Tomcat: Regression in fix for CVE-2026-41293 can trigger request header mix-up

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-2026-86248

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...

EUVD-2026-85234

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-2026-86248

Apache Tomcat is vulnerable to a flaw where CLIENT_CERT authentication does not fail as expected in specific scenarios even when soft fail is disabled. This was caused by an incomplete fix for CVE-2026-34500 , where OCSP checks sometimes soft-fail with FFM. This issue affects versions 11.0.0-M14 ...

CVE-2026-86248 Apache Tomcat: Fix for CVE-2026-34500 was incomplete. OCSP checks sometimes soft-fail with FFM even when soft-fail is disabled

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-2026-86248 Apache Tomcat: Fix for CVE-2026-34500 was incomplete. OCSP checks sometimes soft-fail with FFM even when soft-fail is disabled

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-2026-79677

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-2026-79677

A concurrency bug in Apache Tomcat allows an attacker to trigger a denial of service (DoS) by causing lost timeouts during asynchronous WebSocket writes . This vulnerability affects the following versions: 11.0.0-M1 through 11.0.25 , 10.1.0-M1 through 10.1.59 , and 9.0.0.M1 through 9.0.121 . Addi...

EUVD-2026-85232

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-2026-79677

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-2026-79677 Apache Tomcat: WebSocket DoS due to lost asynchronous write timeout

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...

org.apache.tomee.bom:tomee-microprofile (>=10.0.0-m1, <=10.0.0), org.apache.tomee.bom:tomee-plume (>=10.0.0-m1, <=10.0.0) +13 more potentially affected by CVE-2026-79677 via org.apache.tomcat:tomcat-websocket (>=10.1.20, <=10.1.57)

org.apache.tomcat:tomcat-websocket MAVEN version =10.1.20, =10.0.0-m1, =10.0.0-m1, =10.0.0-m1, =10.0.0-m1, =10.0.0-m1, =10.0.0-m1, =10.0.0-m1, =10.0.0-m1, =10.0.0-m1, =10.0.0-m1, =10.0.0-m1, =10.0.0-m1, =10.0.0-m1, =10.0.0-m1, =10.0.0-m1, =10.2.0 Source cves: CVE-2026-79677 Source advisory:...

CVE-2026-79677 Apache Tomcat: WebSocket DoS due to lost asynchronous write timeout

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...