Fixed in Apache Tomcat 9.0.122

Low: WebSocket message smuggling with per-message-deflate CVE-2026-87022 Improper handling of length parameter allows WebSocket message smuggling when per-message-deflate is used. This was fixed with commit 959a52a2. This issue was reported to the Tomcat security team on 7 September 2026. The iss...

SUSE SLES15: tomcat11 / tomcat11-admin-webapps / tomcat11-el-6_0-api / etc (SUSE-SU-2026:4114-1)

The remote SUSE Linux SLES15 / SLESSAP15 host has packages installed that are affected by multiple vulnerabilities as referenced in the SUSE-SU-2026:4114-1 advisory. - CVE-2026-65182: Apache Tomcat: Bypass longest prefix security constraint bsc1276893. - CVE-2026-65183: Apache Tomcat: TOCTOU when...

Fixed in Apache Tomcat 10.1.60

Low: WebSocket message smuggling with per-message-deflate CVE-2026-87022 Improper handling of length parameter allows WebSocket message smuggling when per-message-deflate is used. This was fixed with commit 567a8551. This issue was reported to the Tomcat security team on 7 September 2026. The iss...

Astra Linux – Vulnerability in Tomcat9

A vulnerability exists in Apache Tomcat related to uncontrolled resource consumption, caused by an allocation leak in the HTTP/2 backlog tracking when a stream is reset. This issue affects Apache Tomcat: versions from 11.0.0-M1 through 11.0.24, from 10.1.0-M1 through 10.1.57, and from 9.0.39...

Astra Linux – Vulnerability in Tomcat9

Authentication Bypass due to a capture-replay vulnerability in Apache Tomcat’s DIGEST authenticator. If a client makes a DIGEST authenticated request with a nonceCount value exceeding the upper boundary of the replay window before windowSize requests have been made, that request can be replayed...

Astra Linux – Vulnerability in Tomcat9

There is an improper authentication vulnerability in Apache Tomcat, which means that under certain circumstances e.g., using CLIENT-CERT or SPNEGO, a user can be authenticated even if the user does not exist in the DataSourceRealm. This issue affects Apache Tomcat versions from 11.0.0-M1 through...

Astra Linux – Vulnerability in Tomcat9

A “off-by-one” error vulnerability in Apache Tomcat affects the N flag used for rewrite valves, causing rewrite processing to restart at the second rule instead of the first rule. This issue affects Apache Tomcat versions from 11.0.0-M1 through 11.0.24, from 10.1.0-M1 through 10.1.57, and from...

Astra Linux – Vulnerability in Tomcat9

Improper neutralization of script-related HTML tags in a web page constitutes an XSS vulnerability in the number guessing example for Apache Tomcat. This issue affects Apache Tomcat versions as follows: 11.0.0-M1 through 11.0.22, 10.1.0-M1 through 10.1.55, 9.0.0.M1 through 9.0.118, 8.5.0 through...

Astra Linux – Vulnerability in Tomcat9

An improper authorization vulnerability in Apache Tomcat leads to security constraints that ignore any methods or method omissions configured as part of the constraints. This issue affects Apache Tomcat versions from 11.0.0-M1 through 11.0.22, from 10.1.0-M1 through 10.1.55, from 9.0.0.M1 through...

Astra Linux – Vulnerability in Tomcat9

A flaw in improper authentication in Apache Tomcat allowed for a replay attack on the EncryptionInterceptor in the cluster component. This issue affects Apache Tomcat versions: 11.0.0-M1 through 11.0.22, 10.1.0-M1 through 10.1.55, 9.0.13 through 9.0.18, 8.5.38 through 8.5.100, and 7.0.100 through...

Astra Linux – Vulnerability in Tomcat9

Check-time/use-time TOCTOU race condition vulnerability in Apache Tomcat: When creating Unix domain sockets, an unauthorized local user can access the Unix domain socket. This issue affects Apache Tomcat: versions from 11.0.0-M1 through 11.0.24, from 10.1.0-M1 through 10.1.57, and from 9.0.42...

Astra Linux – Vulnerability in Tomcat9

Uncontrolled resource consumption vulnerability in Apache Tomcat’s WebSocket chat example. This issue affects Apache Tomcat versions: 11.0.0-M20 through 11.0.24, 10.1.24 through 10.1.57, and 9.0.89 through 9.0.120. Users who have followed security guidelines to remove example web applications are...

Astra Linux – Vulnerability in Tomcat9

There is a vulnerability in input validation in Apache Tomcat due to an incomplete fix for CVE-2026-32990. This issue affects Apache Tomcat versions from 11.0.20 through 11.0.24, from 10.1.53 through 10.1.57, and from 9.0.115 through 9.0.120. Users are recommended to upgrade to version 11.0.25,...

Astra Linux – Vulnerability in Tomcat9

An incorrect authorization vulnerability in Apache Tomcat’s FORM authentication process allows for bypassing a security constraint that restricts users’ access to resources via POST requests, but not via GET requests. This issue affects Apache Tomcat versions from 11.0.0-M1 through 11.0.24, from...

Astra Linux – Vulnerability in Tomcat9

There is a vulnerability related to improper input validation in Apache Tomcat. In versions of Tomcat from 11.0.0-M1 through 11.0.0-M10, from 10.1.0-M1 through 10.1.15, from 9.0.0-M1 through 9.0.82, and from 8.5.0 through 8.5.95, HTTP trailer headers were not parsed correctly. A trailer header th...

Astra Linux – Vulnerability in Tomcat9

An improper authorization vulnerability in Apache Tomcat occurs due to incorrect use of security-role-ref definitions as role aliases within the Realm, in addition to their proper use in Request.isUserInRole. This issue affects Apache Tomcat versions from 11.0.0-M1 through 11.0.24, from 10.1.0-M1...

Astra Linux – Vulnerability in Tomcat9

There is a vulnerability related to insufficient session expiration in Apache Tomcat. This vulnerability means that if the session ID of an authenticated HTTP session is changed after a WebSocket connection is established under that authenticated HTTP session, the WebSocket session will not be...

Astra Linux – Vulnerability in Tomcat9

CLIENTCERT authentication does not fail as expected in some scenarios when soft fail is disabled and FFM is used in Apache Tomcat. This issue affects Apache Tomcat versions from 11.0.0-M14 through 11.0.20, from 10.1.22 through 10.1.53, and from 9.0.92 through 9.0.116. Users are recommended to...

Astra Linux – Vulnerability in Tomcat9

Improper access control and incorrect authorization vulnerabilities in Apache Tomcat can lead to bypassing security constraints. This occurs when a constraint for a longer path is specified before a more restrictive constraint for a shorter sub-path. This issue affects Apache Tomcat versions as...

tomcat: Apache Tomcat: Information disclosure via AJP secret timing discrepancy

A flaw was found in Apache Tomcat. The AJP secret was comparable in non-constant time, allowing an attacker on the local network to mount a timing attack to determine the AJP secret, which may lead to unauthorized access or other security bypasses...