tomcat: Apache Tomcat: Improper Authentication due to principal lookup failure

A flaw was found in Apache Tomcat. This improper authentication vulnerability allows a remote attacker to be authenticated even if their user account does not exist in the DataSourceRealm, under specific circumstances such as CLIENT-CERT or SPNEGO authentication. This can lead to unauthorized...

tomcat: Apache Tomcat: Access control bypass due to off-by-one error in RewriteValve [N] flag processing

A flaw was found in Apache Tomcat. An off-by-one error in the RewriteValve's N flag processing causes rewrite rules to restart at the second rule instead of the first. This vulnerability may allow an attacker to bypass intended access controls...

tomcat: Apache Tomcat: Denial of Service via WebSocket chat example

A flaw was found in Apache Tomcat. This uncontrolled resource consumption vulnerability, located in the WebSocket chat example, allows a remote attacker to cause a Denial of Service DoS by exhausting system resources. This can lead to the affected system becoming unresponsive or crashing...

tomcat: Apache Tomcat: Denial of Service via HTTP/2 allocation leak

A flaw was found in Apache Tomcat. This vulnerability, an uncontrolled resource consumption issue, arises from an allocation leak in the HTTP/2 backlog tracking when a stream is reset. A remote attacker could exploit this to cause a Denial of Service DoS, making the server unresponsive or...

tomcat: Apache Tomcat: Authenticated WebSocket session persists after HTTP session termination

A flaw was found in Apache Tomcat. This vulnerability, categorized as Insufficient Session Expiration, occurs when an authenticated HTTP session's ID is modified after a WebSocket connection has been established. Under these conditions, the WebSocket session fails to terminate as expected when th...

RHEL 10 / 8 / 9 : Red Hat JBoss Web Server 7.0.2 (RHSA-2026:76952)

The remote Redhat Enterprise Linux 10 / 8 / 9 host has packages installed that are affected by multiple vulnerabilities as referenced in the RHSA-2026:76952 advisory. Red Hat JBoss Web Server is a fully integrated and certified set of components for hosting Java web applications. It is comprised ...

K000163569: Multiple Apache Tomcat vulnerabilities

Security Advisory Description CVE-2026-75973 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...

CVE-2026-50229

⚡ CVE-2026-50229 — Apache Tomcat Examples XSS Exploit 🔴 Advanced Cross-Site Scripting XSS Scanner & Exploit for Apache Tomcat Examples Web Application 📌 Overview CVE-2026-50229 is a Cross-Site Scripting XSS vulnerability discovered in the bundled examples web application shipped with Apache Tomca...

Astra Linux – Vulnerability in Tomcat9

There is a vulnerability related to improper input validation in Apache Tomcat. Tomcat did not restrict HTTP/0.9 requests to only the GET method. If a security constraint was configured to allow HEAD requests to a URI but deny GET requests, users could bypass this constraint on GET requests by...

Astra Linux – Vulnerability in Tomcat9

Occasional URL redirection to untrusted sites is a vulnerability in Apache Tomcat, caused by the LoadBalancerDrainingValve. This issue affects Apache Tomcat versions as follows: 11.0.0-M1 through 11.0.18, 10.1.0-M1 through 10.1.52, 9.0.0.M23 through 9.0.115, and 8.5.30 through 8.5.100. Other,...

Astra Linux – Vulnerability in Tomcat9

Vulnerability of resource allocation without limits or throttling in Apache Tomcat. This issue affects Apache Tomcat: versions from 11.0.0-M1 through 11.0.21, from 10.1.0-M1 through 10.1.54, and from 9.0.0.M1 through 9.0.117. Older, unsupported versions may also be affected. Users are recommended...

Astra Linux – Vulnerability in Tomcat9

Apache Tomcat has a Relative Path Traversal vulnerability. The fix for bug 60013 introduced a regression where the rewritten URL was normalized before it was decoded. This created the possibility that, for rewrite rules that modify query parameters into the URL, an attacker could manipulate the...

Astra Linux – Vulnerability in Tomcat9

A missing critical step in the authentication process in Apache Tomcat’s vulnerability allows attackers to authenticate without providing the correct password. This issue affects Apache Tomcat versions ranging from 11.0.0-M1 through 11.0.4, from 10.1.0-M1 through 10.1.36, from 9.0.0.M1 through...

Astra Linux – Vulnerability in Tomcat9

DoS attack due to a vulnerability related to incomplete cleanup in Apache Tomcat. WebSocket clients were able to keep WebSocket connections open, leading to increased resource consumption. This issue affects Apache Tomcat versions from 11.0.0-M1 through 11.0.0-M16, from 10.1.0-M1 through 10.1.18,...

Astra Linux – Vulnerability in Tomcat9

The Padding Oracle vulnerability exists in Apache Tomcat’s EncryptInterceptor with the default configuration. This issue affects Apache Tomcat versions as follows: 11.0.0-M1 through 11.0.18, 10.0.0-M1 through 10.1.52, 9.0.13 through 9.0.115, 8.5.38 through 8.5.100, and 7.0.100 through 7.0.109...

Astra Linux – Vulnerability in Tomcat9

There is a vulnerability related to improper input validation in Apache Tomcat. This issue affects Apache Tomcat versions as follows: 11.0.0-M1 through 11.0.21, 10.1.0-M1 through 10.1.54, 9.0.0.M1 through 9.0.117, and 10.0.0-M1 through 10.0.27. Older, end-of-support versions may also be affected...

Apache Tomcat 11.0.2 Vulnerability Scanner

Apache Tomcat versions 9.0.0 through 9.0.98, 10.1.0 through 10.1.34, and 11.0.0 through 11.0.2 may allow remote code execution when partial PUT and persistent sessions are enabled. The supplied Nuclei template identifies affected versions and tests partial PUT support...

tomcat: Apache Tomcat: Denial of Service via HTTP/2 allocation leak

A flaw was found in Apache Tomcat. This vulnerability, an uncontrolled resource consumption issue, arises from an allocation leak in the HTTP/2 backlog tracking when a stream is reset. A remote attacker could exploit this to cause a Denial of Service DoS, making the server unresponsive or...

tomcat: Apache Tomcat: Error condition not handled when configuring CRLs

A flaw was found in Apache Tomcat. When configuring Certificate Revocation Lists CRLs for a FFM presumably a specific type of connector, the system fails to detect and act upon an error condition. This oversight could lead to unexpected behavior or a security bypass, as the intended security...

tomcat: Apache Tomcat: Misleading security logs due to incorrect control flow

A flaw was found in Apache Tomcat. Due to an always-incorrect control flow implementation, special roles and empty authorization constraints were not accurately included when the effective web.xml configuration was logged. This could lead to a security oversight where administrators might...