CVE-2026-55957

A flaw was found in Apache Tomcat. When the JNDIRealm was configured to authenticate binds using GSSAPI, an attacker could exploit a missing critical step in the authentication process. This allowed the attacker to bypass password verification and authenticate without providing the correct...

GHSA-7JVV-FHMG-WPFW

creationtimestamp| type| source ---|---|--- 2026-08-12 06:12:39+00:00| seen| https://bsky.app/profile/harald.mementomori.social.ap.brid.gy/post/3msuhwgxmzpr2...

Apache Tomcat 11.0.23 RewriteValve Authentication Bypass

A proof of concept exploit for an authentication bypass vulnerability in Apache Tomcat version 11.0.23. The vulnerability exists because RewriteValve rebuilds decoded request URIs using java.net.URLDecoder, causing literal plus characters to be interpreted differently during security constraint...

Apache Tomcat 9.0.13 < 9.0.117 Insertion of Sensitive Information Vulnerability

The version of Tomcat installed on the remote host is 9.0.13 prior to 9.0.117. It is, therefore, affected by a vulnerability as referenced in the fixedinapachetomcat9.0.117security-9 advisory. - Insertion of Sensitive Information into Log File vulnerability in the cloud membership for clustering...

Apache Tomcat 11.0.2 Remote Code Execution

A proof of concept exploit for an unauthenticated remote code execution vulnerability in Apache Tomcat version 11.0.2. The vulnerability abuses partial PUT path equivalence to place a crafted Java serialized session file where a PersistentManager with FileStore can load it, resulting in unsafe Ja...

Apache Tomcat 9.0.40 < 9.0.117 Improper Encoding or Escaping of Output Vulnerability (CVE-2026-34483)

The version of Tomcat installed on the remote host is 9.0.40 prior to 9.0.117. It is, therefore, affected by a vulnerability as referenced in the fixedinapachetomcat9.0.117security-9 advisory. - Improper Encoding or Escaping of Output vulnerability in the JsonAccessLogValve component of Apache...

Apache Tomcat 9.0.116 < 9.0.117 Missing Encryption of Sensitive Data Vulnerability (CVE-2026-34486)

The version of Tomcat installed on the remote host is 9.0.116 prior to 9.0.117. It is, therefore, affected by a vulnerability as referenced in the fixedinapachetomcat9.0.117security-9 advisory. - Missing Encryption of Sensitive Data vulnerability in Apache Tomcat due to the fix for CVE-2026-29146...

GHSA-Q67Q-549Q-P849

creationtimestamp| type| source ---|---|--- 2026-08-10 17:18:10+00:00| seen| https://gist.github.com/haidang-infosec/402db84bee7aca2f57bb109b31574649...

CVE-2018-11798

creationtimestamp| type| source ---|---|--- 2026-08-10 13:20:13+00:00| seen| https://bsky.app/profile/o2cloud.bsky.social/post/3msq6vheark2o 2026-08-13 08:46:14+00:00| seen| https://www.cert.ssi.gouv.fr/avis/CERTFR-2026-AVI-0991...

OESA-2026-3233 tomcat security update

Tomcat is the servlet container that is used in the official Reference Implementation for the Java Servlet and JavaServer Pages technologies. The Java Servlet and JavaServer Pages specifications are developed by Sun under the Java Community Process. Security Fixes: Uncontrolled Resource Consumpti...

Apache Tomcat: Apache Tomcat: Incorrect control flow in rewrite valve allows unexpected rule processing

A flaw was found in Apache Tomcat's rewrite valve. This vulnerability involves an incorrect control flow implementation where, during the processing of rewrite rules, if the first condition in an OR chain matched, subsequent non-OR conditions were unexpectedly skipped. This can lead to unintended...

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...

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: Security constraint bypass via improper URL encoding in rewrite valve

A flaw was found in Apache Tomcat. This vulnerability, located in the rewrite valve, is due to improper handling of URL encoding hex encoding. A remote attacker could exploit this to bypass security constraints in certain configurations, potentially gaining unauthorized access or performing actio...

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...

Apache Tomcat: Apache Tomcat: Incorrect control flow in rewrite valve allows unexpected rule processing

A flaw was found in Apache Tomcat's rewrite valve. This vulnerability involves an incorrect control flow implementation where, during the processing of rewrite rules, if the first condition in an OR chain matched, subsequent non-OR conditions were unexpectedly skipped. This can lead to unintended...

tomcat: Apache Tomcat: Security constraint bypass via improper URL encoding in rewrite valve

A flaw was found in Apache Tomcat. This vulnerability, located in the rewrite valve, is due to improper handling of URL encoding hex encoding. A remote attacker could exploit this to bypass security constraints in certain configurations, potentially gaining unauthorized access or performing actio...

Apache Tomcat Missing Encryption of Sensitive Data Vulnerability

Apache Tomcat contains a missing encryption of sensitive data vulnerability that allows the bypass of the EncryptInterceptor. This vulnerability can be chained with CVE‑2025‑24813...

K000162737: Apache Tomcat vulnerability CVE-2026-66299

Security Advisory Description Uncontrolled Resource Consumption vulnerability in Apache Tomcat's WebSocket chat example. This issue affects Apache Tomcat: from 11.0.0-M20 through 11.0.24, from 10.1.24 through 10.1.57, from 9.0.89 through 9.0.120. Users who have followed the security guidance to...