tomcat: Apache Tomcat: Request smuggling vulnerability can lead to denial of service

A flaw was found in Apache Tomcat. This vulnerability, known as HTTP Request/Response Smuggling, occurs when Tomcat processes the transfer-encoding header for an HTTP/1.0 request while operating behind a reverse proxy. A remote attacker could exploit this to cause a denial of service, leading to...

tomcat: Apache Tomcat: Race condition allows HTTP/2 request manipulation

A flaw was found in Apache Tomcat. This vulnerability, caused by a race condition during concurrent execution, allows an attacker to inject unauthorized data, known as trailer fields, into another user's HTTP/2 request. This could lead to the manipulation of web traffic or unintended information...

tomcat: Apache Tomcat: Denial of Service via busy wait during WebSocket close

A flaw was found in Apache Tomcat. An uncontrolled resource consumption vulnerability occurs when sending a WebSocket close message, which can lead to a busy wait condition. A remote attacker could exploit this to cause a Denial of Service DoS by making the server unresponsive...

tomcat: Apache Tomcat: Denial of Service via AJP request

A flaw was found in Apache Tomcat. An unauthenticated remote attacker can send a specially crafted AJP Apache JServ Protocol request, causing an AJP processing thread to become unresponsive. This resource exhaustion can lead to a denial of service DoS, making the server unavailable to legitimate...

tomcat: Apache Tomcat: Denial of Service via malformed HTTP/2 request

A flaw was found in Apache Tomcat. An incomplete cleanup vulnerability allows a remote attacker to send a malformed HTTP/2 request. This can potentially cause a denial of service, leading to one request from another user failing...

tomcat: Apache Tomcat: Denial of Service due to lost asynchronous WebSocket write timeouts

A flaw was found in Apache Tomcat. This vulnerability allows a remote attacker to cause a Denial of Service DoS by exploiting lost timeouts for asynchronous WebSocket writes. This can lead to the affected system becoming unresponsive or unavailable...

tomcat: Apache Tomcat: OCSP checks sometimes soft-fail with FFM even when soft-fail is disabled

A flaw was found in Apache Tomcat. When client certificate authentication is configured with strict certificate revocation checking, Online Certificate Status Protocol OCSP verification may improperly allow connections instead of failing as intended. A remote attacker presenting an invalid or...

tomcat: Apache Tomcat: HTTP/2 request smuggling due to header mix-up

A flaw was found in Apache Tomcat. This vulnerability, identified as HTTP Request/Response smuggling, stems from an inconsistent interpretation of HTTP/2 requests. A regression in a prior security fix can cause request headers to be mixed up. This could allow a remote attacker to bypass security...

tomcat: Apache Tomcat: WebSocket message smuggling via improper length handling

A flaw was found in Apache Tomcat. This vulnerability, related to improper handling of length parameters, allows for WebSocket message smuggling when the 'per-message-deflate' extension is in use. A remote attacker could exploit this to bypass security controls or inject malicious data into...

Security update for tomcat

This update for tomcat fixes the following issues: CVE-2026-65182: Apache Tomcat: Bypass longest prefix security constraint bsc1276893. CVE-2026-65183: Apache Tomcat: TOCTOU when setting specific permissions for Unix Domain Sockets bsc1276894. CVE-2026-65637: Apache Tomcat: HTTP/2 no-authority...

SUSE-SU-2026:4203-1 Security update for tomcat

This update for tomcat fixes the following issues: - CVE-2026-65182: Apache Tomcat: Bypass longest prefix security constraint bsc1276893. - CVE-2026-65183: Apache Tomcat: TOCTOU when setting specific permissions for Unix Domain Sockets bsc1276894. - CVE-2026-65637: Apache Tomcat: HTTP/2...

Exploit for Deserialization of Untrusted Data in Apache Tomcat

CVE-2025-24813 — Apache Tomcat Partial PUT Deserialization RCE...

Exploit for Improper Input Validation in Apache Tomcat

CVE-2026-24733 What is CVE-2026-24733? Apache Tomcat incor...

PT-2026-97294

Name of the Vulnerable Software and Affected Versions Apache Tomcat versions 11.0.0-M1 through 11.0.25 Apache Tomcat versions 10.1.0-M1 through 10.1.59 Apache Tomcat versions 9.0.0.M1 through 9.0.121 Apache Tomcat versions 8.5.0 through 8.5.100 Apache Tomcat versions 7.0.43 through 7.0.109...

Fixed in Apache Tomcat 11.0.26

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 4fef25fe. This issue was reported to the Tomcat security team on 7 September 2026. The iss...

PT-2026-97283

Name of the Vulnerable Software and Affected Versions Apache Tomcat versions 11.0.0-M1 through 11.0.25 Apache Tomcat versions 10.1.0-M1 through 10.1.59 Apache Tomcat versions 9.0.0.M1 through 9.0.121 Apache Tomcat versions 8.5.0 through 8.5.100 Apache Tomcat versions 7.0.43 through 7.0.109...

PT-2026-97285

Name of the Vulnerable Software and Affected Versions Apache Tomcat versions 11.0.0-M1 through 11.0.25 Apache Tomcat versions 10.1.0-M1 through 10.1.59 Apache Tomcat versions 9.0.39 through 9.0.121 Apache Tomcat versions 8.5.59 through 8.5.100 Description A race condition occurs due to improper...

PT-2026-97298

Name of the Vulnerable Software and Affected Versions Apache Tomcat versions 11.0.0-M14 through 11.0.25 Apache Tomcat versions 10.1.22 through 10.1.59 Apache Tomcat versions 9.0.92 through 9.0.121 Description CLIENT CERT authentication does not fail as expected in certain scenarios when the soft...

PT-2026-97293

Name of the Vulnerable Software and Affected Versions Apache Tomcat versions 11.0.19 through 11.0.25 Apache Tomcat versions 10.1.53 through 10.1.59 Apache Tomcat versions 9.0.116 through 9.0.121 Description An incomplete cleanup issue allows a malformed request to potentially cause a request from...

SUSE SLES15: tomcat10 / tomcat10-admin-webapps / tomcat10-el-5_0-api / etc (SUSE-SU-2026:4119-1)

The remote SUSE Linux SLES15 / SLESSAP15 host has packages installed that are affected by multiple vulnerabilities as referenced in the SUSE-SU-2026:4119-1 advisory. - CVE-2026-65182: Apache Tomcat: Bypass longest prefix security constraint bsc1276893. - CVE-2026-65183: Apache Tomcat: TOCTOU when...