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CVE-2026-101296

Apache Tomcat: JNDIRealm bind credential validation fails open for non-GSSAPI SASL mechanisms

A missing critical step in authentication vulnerability in Apache Tomcat when the JNDI realm was configured with with a non GSSAPI SASL authentication mechanism allowed attackers to authenticate without providing the correct password. This issue affects Apache Tomcat: from 11.0.0-M1 through 11.0.26, from 10.1.0-M1 through 10.1.60, from 9.0.0.M1 through 9.0.122. The following versions were EOL at the time the CVE was created but are known to be affected: from 8.5.0 through 8.5.100, from 7.0.0 through 7.0.109. Other unsupported versions may also be affected. Users are recommended to upgrade to version 11.0.27, 10.1.61 or 9.0.123, which fix the issue.

CVSS 4.0 · 9.1 Critical EPSS < 1% KEV · Not listed
Vendors
Apache Apache Software Foundation Redhat
Products
Apache Tomcat Tomcat Tomcat and 1 more
CVE-2024-50379

Apache Tomcat: RCE due to TOCTOU issue in JSP compilation

Time-of-check Time-of-use (TOCTOU) Race Condition vulnerability during JSP compilation in Apache Tomcat permits an RCE on case insensitive file systems when the default servlet is enabled for write (non-default configuration). This issue affects Apache Tomcat: from 11.0.0-M1 through 11.0.1, from 10.1.0-M1 through 10.1.33, from 9.0.0.M1 through 9.0.97. The following versions were EOL at the time the CVE was created but are known to be affected: 8.5.0 though 8.5.100. Other, older, EOL versions may also be affected. Users are recommended to upgrade to version 11.0.2, 10.1.34 or 9.0.98, which fixes the issue.

CVSS 3.1 · 9.8 Critical EPSS 31.8% KEV · Not listed
Vendors
Apache Netapp Redhat
Products
Tomcat Bootstrap Os Hci Compute Node and 3 more
CVE-2019-10072

tomcat: HTTP/2 connection window exhaustion on write, incomplete fix of CVE-2019-0199

The fix for CVE-2019-0199 was incomplete and did not address HTTP/2 connection window exhaustion on write in Apache Tomcat versions 9.0.0.M1 to 9.0.19 and 8.5.0 to 8.5.40 . By not sending WINDOW_UPDATE messages for the connection window (stream 0) clients were able to cause server-side threads to block eventually leading to thread exhaustion and a DoS.

CVSS 3.0 · 7.5 High EPSS 73.0% KEV · Not listed
Vendors
Apache Redhat
Products
Tomcat Jboss Enterprise Web Server
CVE-2019-0232

tomcat: Remote Code Execution on Windows

When running on Windows with enableCmdLineArguments enabled, the CGI Servlet in Apache Tomcat 9.0.0.M1 to 9.0.17, 8.5.0 to 8.5.39 and 7.0.0 to 7.0.93 is vulnerable to Remote Code Execution due to a bug in the way the JRE passes command line arguments to Windows. The CGI Servlet is disabled by default. The CGI option enableCmdLineArguments is disable by default in Tomcat 9.0.x (and will be disabled by default in all versions in response to this vulnerability). For a detailed explanation of the JRE behaviour, see Markus Wulftange's blog (https://codewhitesec.blogspot.com/2016/02/java-and-command-line-injections-in-windows.html) and this archived MSDN blog (https://web.archive.org/web/20161228144344/https://blogs.msdn.microsoft.com/twistylittlepassagesallalike/2011/04/23/everyone-quotes-command-line-arguments-the-wrong-way/).

CVSS 3.0 · 8.1 High EPSS 99.9% KEV · Not listed
Vendors
Apache Microsoft Redhat
Products
Tomcat Windows Jboss Enterprise Web Server
CVE-2019-0221

tomcat: XSS in SSI printenv

The SSI printenv command in Apache Tomcat 9.0.0.M1 to 9.0.0.17, 8.5.0 to 8.5.39 and 7.0.0 to 7.0.93 echoes user provided data without escaping and is, therefore, vulnerable to XSS. SSI is disabled by default. The printenv command is intended for debugging and is unlikely to be present in a production website.

CVSS 3.0 · 6.1 Medium EPSS 58.3% KEV · Not listed
Vendors
Apache Redhat
Products
Tomcat Jboss Enterprise Web Server
CVE-2017-5647

tomcat: Incorrect handling of pipelined requests when send file was used

A bug in the handling of the pipelined requests in Apache Tomcat 9.0.0.M1 to 9.0.0.M18, 8.5.0 to 8.5.12, 8.0.0.RC1 to 8.0.42, 7.0.0 to 7.0.76, and 6.0.0 to 6.0.52, when send file was used, results in the pipelined request being lost when send file processing of the previous request completed. This could result in responses appearing to be sent for the wrong request. For example, a user agent that sent requests A, B and C could see the correct response for request A, the response for request C for request B and no response for request C.

CVSS 3.0 · 7.5 High EPSS 16.8% KEV · Not listed
Vendors
Apache Redhat
Products
Tomcat Enterprise Linux Jboss Enterprise Web Server
CVE-2026-93446

Apache Tomcat: Possible TLS 1.3 connection failures

Incomplete cleanup vulnerability in Apache Tomcat could cause TLS 1.3 connections to fail intermittently. This issue affects Apache Tomcat: from 11.0.0-M21 through 11.0.26, from 10.1.25 through 10.1.60, from 9.0.90 through 9.0.122. Users are recommended to upgrade to version 11.0.27, 10.1.61 or 9.0.123, which fix the issue.

CVSS 3.1 · 7.5 High EPSS < 1% KEV · Not listed
Vendors
Apache Apache Software Foundation Redhat
Products
Apache Tomcat Tomcat Tomcat and 1 more
CVE-2026-88041

Apache Tomcat: HTTP/2 trailer header cross-contamination

Incomplete cleanup vulnerability in Apache Tomcat allowed an trailer information from a previous request to leak into a subsequent request. This issue affects Apache Tomcat: from 11.0.0-M23 through 11.0.26, from 10.1.27 through 10.1.60, from 9.0.92 through 9.0.122. Users are recommended to upgrade to version 11.0.27, 10.1.61 or 9.0.123, which fix the issue.

CVSS 3.1 · 7.5 High EPSS < 1% KEV · Not listed
Vendors
Apache Apache Software Foundation Redhat
Products
Apache Tomcat Tomcat Tomcat and 1 more
CVE-2026-80353

Apache Tomcat: TOCTOU when setting specific permissions for Unix Domain Sockets - Fix for CVE-2026-65183 did not address APR connector

Time-of-check time-of-use (TOCTOU) race condition vulnerability in Apache Tomcat when creating unix domain sockets for the APR/Native connector allows an unauthorised local user to access the unix domain socket. The fix for CVE-2026-65183 only addressed the NIO connector. It did not address the same issue in the APR/Native connector. This issue affects Apache Tomcat: from 9.0.47 through 9.0.122. Users are recommended to upgrade to version 9.0.123, which fixes the issue.

CVSS 3.1 · 8.1 High EPSS < 1% KEV · Not listed
Vendors
Apache Apache Software Foundation Redhat
Products
Apache Tomcat Tomcat Tomcat and 1 more
CVE-2026-74049

Apache Tomcat: Jasper JSTL <c:redirect> plug-in implementation omits page abort (SKIP_PAGE)

Execution After Redirect (EAR) vulnerability in Apache Tomcat. This issue affects Apache Tomcat: from 11.0.0-M1 through 11.0.26, from 10.1.0-M1 through 10.1.60, from 9.0.0.M1 through 9.0.122. The following versions were EOL at the time the CVE was created but are known to be affected: from 8.5.0 through 8.5.100, from 7.0.0 through 7.0.109. Other unsupported versions may also be affected. Users are recommended to upgrade to version 11.0.27, 10.1.61, 9.0.123, which fixes the issue.

CVSS 3.1 · 6.1 Medium EPSS < 1% KEV · Not listed
Vendors
Apache Apache Software Foundation Redhat
Products
Apache Tomcat Tomcat Tomcat and 1 more
CVE-2026-74048

Apache Tomcat: OpenSSL-FFM FIPS failure does not prevent start-up

Not Failing Securely ('Failing Open') vulnerability in Apache Tomcat. If the OpenSSLLifecycleListener is configured to use FIPS mode but FIPS activation fails, Tomcat logs and error but continues to use JSSE in non-FIPS mode with the provided configuration. This issue affects Apache Tomcat: from 11.0.0-M14 through 11.0.26, from 10.1.22 through 10.1.60, from 9.0.92 through 9.0.122. Users are recommended to upgrade to version 11.0.27, 10.1.61 or 9.0.123, which fix the issue.

CVSS 3.1 · 6.5 Medium EPSS < 1% KEV · Not listed
Vendors
Apache Apache Software Foundation Redhat
Products
Apache Tomcat Tomcat Tomcat and 1 more
CVE-2026-101356

Apache Tomcat: HTTP/2 request/response mix-up after error during async processing

Incorrect object recycling and re-use vulnerability in Apache Tomcat affecting HTTP/2 processing of asynchronous servlets can trigger request and/or response mix-up between users. This issue affects Apache Tomcat: from 11.0.22 through 11.0.26, from 10.1.55 through 10.1.60, from 9.0.118 through 9.0.122. Users are recommended to upgrade to version 11.0.27, 10.1.61 or 9.0.123, which fixes the issue.

CVSS 3.1 · 9.1 Critical EPSS < 1% KEV · Not listed
Vendors
Apache Apache Software Foundation Redhat
Products
Apache Tomcat Tomcat Tomcat and 1 more
CVE-2026-103119

Apache Tomcat: AJP response mix-up

Buffer under-read vulnerability in Apache Tomcat meant that a large non-blocking write could result in the response body being split between the current request and the next request received on that connection leading most likely to failure of the second request and possibly leakage of data from the first response to the second. This issue affects Apache Tomcat: from 11.0.0-M25 through 11.0.26. Users are recommended to upgrade to version 11.0.27, which fixes the issue.

CVSS 3.1 · 9.1 Critical EPSS < 1% KEV · Not listed
Vendors
Apache Apache Software Foundation Redhat
Products
Apache Tomcat Tomcat Tomcat and 1 more
CVE-2018-8014

tomcat: Insecure defaults in CORS filter enable 'supportsCredentials' for all origins

The defaults settings for the CORS filter provided in Apache Tomcat 9.0.0.M1 to 9.0.8, 8.5.0 to 8.5.31, 8.0.0.RC1 to 8.0.52, 7.0.41 to 7.0.88 are insecure and enable 'supportsCredentials' for all origins. It is expected that users of the CORS filter will have configured it appropriately for their environment rather than using it in the default configuration. Therefore, it is expected that most users will not be impacted by this issue.

CVSS 3.0 · 9.8 Critical EPSS 20.9% KEV · Not listed
Vendors
Apache Canonical Debian and 3 more
Products
Tomcat Ubuntu Linux Debian Linux and 9 more
CVE-2018-1305

tomcat: Late application of security constraints can lead to resource exposure for unauthorised users

Security constraints defined by annotations of Servlets in Apache Tomcat 9.0.0.M1 to 9.0.4, 8.5.0 to 8.5.27, 8.0.0.RC1 to 8.0.49 and 7.0.0 to 7.0.84 were only applied once a Servlet had been loaded. Because security constraints defined in this way apply to the URL pattern and any URLs below that point, it was possible - depending on the order Servlets were loaded - for some security constraints not to be applied. This could have exposed resources to users who were not authorised to access them.

CVSS 3.0 · 6.5 Medium EPSS 14.5% KEV · Not listed
Vendors
Apache Canonical Debian and 2 more
Products
Tomcat Ubuntu Linux Debian Linux and 7 more
CVE-2018-1304

tomcat: Incorrect handling of empty string URL in security constraints can lead to unintended exposure of resources

The URL pattern of "" (the empty string) which exactly maps to the context root was not correctly handled in Apache Tomcat 9.0.0.M1 to 9.0.4, 8.5.0 to 8.5.27, 8.0.0.RC1 to 8.0.49 and 7.0.0 to 7.0.84 when used as part of a security constraint definition. This caused the constraint to be ignored. It was, therefore, possible for unauthorised users to gain access to web application resources that should have been protected. Only security constraints with a URL pattern of the empty string were affected.

CVSS 3.0 · 5.9 Medium EPSS 17.1% KEV · Not listed
Vendors
Apache Canonical Debian and 2 more
Products
Tomcat Ubuntu Linux Debian Linux and 10 more
CVE-2018-11784

tomcat: Open redirect in default servlet

When the default servlet in Apache Tomcat versions 9.0.0.M1 to 9.0.11, 8.5.0 to 8.5.33 and 7.0.23 to 7.0.90 returned a redirect to a directory (e.g. redirecting to '/foo/' when the user requested '/foo') a specially crafted URL could be used to cause the redirect to be generated to any URI of the attackers choice.

CVSS 3.0 · 4.3 Medium EPSS 97.7% KEV · Not listed
Vendors
Apache Canonical Debian and 3 more
Products
Tomcat Ubuntu Linux Debian Linux and 14 more
CVE-2017-7674

tomcat: Vary header not added by CORS filter leading to cache poisoning

The CORS Filter in Apache Tomcat 9.0.0.M1 to 9.0.0.M21, 8.5.0 to 8.5.15, 8.0.0.RC1 to 8.0.44 and 7.0.41 to 7.0.78 did not add an HTTP Vary header indicating that the response varies depending on Origin. This permitted client and server side cache poisoning in some circumstances.

CVSS 3.0 · 4.3 Medium EPSS 8.0% KEV · Not listed
Vendors
Apache Redhat
Products
Tomcat Enterprise Linux Jboss Enterprise Web Server
CVE-2017-5664

tomcat: Security constrained bypass in error page mechanism

The error page mechanism of the Java Servlet Specification requires that, when an error occurs and an error page is configured for the error that occurred, the original request and response are forwarded to the error page. This means that the request is presented to the error page with the original HTTP method. If the error page is a static file, expected behaviour is to serve content of the file as if processing a GET request, regardless of the actual HTTP method. The Default Servlet in Apache Tomcat 9.0.0.M1 to 9.0.0.M20, 8.5.0 to 8.5.14, 8.0.0.RC1 to 8.0.43 and 7.0.0 to 7.0.77 did not do this. Depending on the original request this could lead to unexpected and undesirable results for static error pages including, if the DefaultServlet is configured to permit writes, the replacement or removal of the custom error page. Notes for other user provided error pages: (1) Unless explicitly coded otherwise, JSPs ignore the HTTP method. JSPs used as error pages must must ensure that they handle any error dispatch as a GET request, regardless of the actual method. (2) By default, the response generated by a Servlet does depend on the HTTP method. Custom Servlets used as error pages must ensure that they handle any error dispatch as a GET request, regardless of the actual method.

CVSS 3.0 · 7.5 High EPSS 16.6% KEV · Not listed
Vendors
Apache Redhat
Products
Tomcat Enterprise Linux Jboss Enterprise Application Platform and 1 more
CVE-2017-5648

tomcat: Calls to application listeners did not use the appropriate facade object

While investigating bug 60718, it was noticed that some calls to application listeners in Apache Tomcat 9.0.0.M1 to 9.0.0.M17, 8.5.0 to 8.5.11, 8.0.0.RC1 to 8.0.41, and 7.0.0 to 7.0.75 did not use the appropriate facade object. When running an untrusted application under a SecurityManager, it was therefore possible for that untrusted application to retain a reference to the request or response object and thereby access and/or modify information associated with another web application.

CVSS 3.0 · 9.1 Critical EPSS 13.2% KEV · Not listed
Vendors
Apache Redhat
Products
Tomcat Enterprise Linux Jboss Enterprise Web Server