Improper handling of length parameter inconsistency vulnerability in Apache Tomcat allows WebSocket message smuggling when per-message-deflate is used.
This issue affects Apache Tomcat: from 11.0.0-M1 through 11.0.25, from 10.1.0-M1 through 10.1.59, from 9.0.0.M1 through 9.0.121.
The following versions were EOS at the time the CVE was created but are known to be affected: from 8.5.0 through 8.5.100, from 7.0.56 through 7.0.109. Other unsupported versions may also be affected.
Users are recommended to upgrade to version 11.0.26, 10.1.60 or 9.1.22, which fix the issue.
Missing release of resource after effective lifetime, Comparison using wrong factors vulnerability in Apache Tomcat allows a denial of service as a result of lost time outs for asynchronous WebSocket writes.
This issue affects Apache Tomcat: from 11.0.0-M1 through 11.0.25, from 10.1.0-M1 through 10.1.59, from 9.0.0.M1 through 9.0.121.
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 7.0.43 through 7.0.109. Other unsupported versions may also be affected.
Users are recommended to upgrade to version 11.0.26, 10.1.60 or 9.0.122, which fix the issue.
Incomplete cleanup vulnerability in Apache Tomcat allows a malformed request to potentially (depends on timing) cause one request from another user to fail.
This issue affects Apache Tomcat: from 11.0.19 through 11.0.25, from 10.1.53 through 10.1.59, from 9.0.116 through 9.0.121.
Users are recommended to upgrade to version 11.0.26, 10.1.60 or 9.0.122, which fix the issue.
Allocation of resources without limits or throttling vulnerability in Apache Tomcat allows an unauthenticated AJP request to pin an AJP processing thread leading to denial of service.
This issue affects Apache Tomcat: from 11.0.0-M1 through 11.0.25, from 10.1.0-M1 through 10.1.59, from 9.0.0.M1 through 9.0.121.
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 11.0.26, 10.1.60 or 9.0.122, which fix the issue.
Uncontrolled Resource Consumption vulnerability in Apache Tomcat during sending of WebSocket close message enabled a DoS attack.
This issue affects Apache Tomcat: from 11.0.0-M5 through 11.0.25, from 10.1.8 through 10.1.59, from 9.0.74 through 9.0.121.
The following versions were EOL at the time the CVE was created but are known to be affected: from 8.5.88 through 8.5.100. Other unsupported versions may also be affected.
Users are recommended to upgrade to version 11.0.26, 10.1.60 or 9.0.122, which fix the issue.
Inconsistent Interpretation of HTTP Requests ('HTTP Request/Response Smuggling') vulnerability in Apache Tomcat caused by processing the transfer-encoding header for an HTTP/1.0 request may allow an attacker to cause one request from another user to fail when Tomcat is located behind a reverse proxy.
This issue affects Apache Tomcat: from 11.0.0-M1 through 11.0.25, from 10.1.0-M1 through 10.1.59, from 9.0.47 through 9.0.121.
The following versions were EOL at the time the CVE was created but are known to be affected: from 8.5.67 through 8.5.100. Other unsupported versions may also be affected.
Users are recommended to upgrade to version 11.0.26, 10.1.60 or 9.0.122, which fix the issue.
Concurrent Execution using Shared Resource with Improper Synchronization ('Race Condition') vulnerability in Apache Tomcat allows an attacker to inject trailer fields into another HTTP/2 request.
This issue affects Apache Tomcat: from 11.0.0-M1 through 11.0.25, from 10.1.0-M1 through 10.1.59, from 9.0.39 through 9.0.121.
The following versions were EOL at the time the CVE was created but are known to be affected: from 8.5.59 through 8.5.100. Other unsupported versions may also be affected.
Users are recommended to upgrade to version 11.0.26, 10.1.60, 9.0.122, which fix the issue.
Authentication Bypass by Alternate Name vulnerability in Apache Tomcat allowed the security constraints for any WebSocket endpoint to be bypassed.
This issue affects Apache Tomcat: from 11.0.0-M1 through 11.0.25, from 10.1.0-M1 through 10.1.59, from 9.0.0.M1 through 9.0.121.
The following versions were EOS at the time the CVE was created but are known to be affected: from 8.5.0 through 8.5.100, from 7.0.43 through 7.0.109. Other unsupported versions may also be affected.
Users are recommended to upgrade to version 11.0.26, 10.1.60 or 9.0.122, which fix the issue.
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 authenticate a request would be used for all web applications.
This issue affects Apache Tomcat: from 11.0.0-M1 through 11.0.25, from 10.1.0-M1 through 10.1.59, from 9.0.0.M4 through 9.0.121.
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. Other unsupported versions may also be affected.
Users are recommended to upgrade to version 11.0.26, 10.1.60, 9.0.122, which fixes the issue.
Improper Check for Certificate Revocation vulnerability in Apache Tomcat. Both the OpenSSL and OpenSSL-FFM TLS implementations ignore CRLs when certificate uses a keystore.
This issue affects Apache Tomcat: from 11.0.0-M1 through 11.0.25, from 10.1.0-M1 through 10.1.58, from 9.0.0-M1 through 9.0.121.
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. Other unsupported versions may also be affected.
Users are recommended to upgrade to version 11.0.26, 10.1.59, 9.0.122, which fixes the issue.
CLIENTCERT authentication does not fail as expected for some scenarios when soft fail is disabled vulnerability in Apache Tomcat.
This issue affects Apache Tomcat: from 11.0.0-M14 through 11.0.25, from 10.1.22 through 10.1.59, from 9.0.92 through 9.0.121.
Users are recommended to upgrade to version 11.0.26, 10.1.60 or 9.0.122, which fix the issue.
Inconsistent interpretation of HTTP/2 requests ('HTTP Request/Response smuggling') vulnerability in Apache Tomcat caused by a regression in fix for CVE-2026-41293 can trigger request header mix-up.
This issue affects Apache Tomcat: from 11.0.22 through 11.0.25, from 10.1.55 through 10.1.59, from 9.0.118 through 9.0.121.
Users are recommended to upgrade to version 11.0.26, 10.1.60 or 9.0.122, which fix the issue.
Severity: low
Affected versions:
- Apache Tomcat 11.0.0-M1 through 11.0.25 - Apache Tomcat 10.1.0-M1 through 10.1.59 - Apache Tomcat 9.0.0.M1 through 9.0.121 - Apache Tomcat 8.5.0 through 8.5.100 - Apache Tomcat 7.0.56 through 7.0.109
Description:
Credit:
krsecurity(kongr) (finder)
References:
https://lists.apache.org/thread/ypvlkjqsq0480fnk9jm6h9qllddwlw4w https://tomcat.apache.org/ https://www.cve.org/CVERecord?id=CVE-2026-87022
Severity: important
Affected versions:
- Apache Tomcat 11.0.22 through 11.0.25 - Apache Tomcat 10.1.55 through 10.1.59 - Apache Tomcat 9.0.118 through 9.0.121
Description:
Credit:
Jeppe Weikop (finder)
References:
https://lists.apache.org/thread/mss45z99lcdd5dtpgcn45dy82f3toswc https://tomcat.apache.org/ https://www.cve.org/CVERecord?id=CVE-2026-86350
Severity: moderate
Affected versions:
- Apache Tomcat 11.0.0-M14 through 11.0.25 - Apache Tomcat 10.1.22 through 10.1.59 - Apache Tomcat 9.0.92 through 9.0.121
Description:
Credit:
Mike Read (github.com/Michael-JRead) (finder)
References:
https://lists.apache.org/thread/nmkmjp9l53y8h3oc4n8fc0bkw9dv15sk https://tomcat.apache.org/ https://www.cve.org/CVERecord?id=CVE-2026-86248
Severity: moderate
Affected versions:
- Apache Tomcat 11.0.0-M1 through 11.0.25 - Apache Tomcat 10.1.0-M1 through 10.1.59 - Apache Tomcat 9.0.0.M1 through 9.0.121 - Apache Tomcat 8.5.0 through 8.5.100 - Apache Tomcat 7.0.43 through 7.0.109 - Apache Tomcat before 7.0.43 unaffected
Description:
References:
https://lists.apache.org/thread/bzwps6ck4szf2hmksbbon3syyl9qnkv8 https://tomcat.apache.org/ https://www.cve.org/CVERecord?id=CVE-2026-79677
Severity: low
Affected versions:
- Apache Tomcat 11.0.19 through 11.0.25 - Apache Tomcat 10.1.53 through 10.1.59 - Apache Tomcat 9.0.116 through 9.0.121 - Apache Tomcat through 8.5.100 unaffected
Description:
References:
https://lists.apache.org/thread/qkmsos3s8chn5053qr466rzwv6sk5gjg https://tomcat.apache.org/ https://www.cve.org/CVERecord?id=CVE-2026-78437
Severity: important
Affected versions:
- Apache Tomcat 11.0.0-M1 through 11.0.25 - Apache Tomcat 10.1.0-M1 through 10.1.59 - Apache Tomcat 9.0.0.M1 through 9.0.121 - Apache Tomcat 8.5.0 through 8.5.100 - Apache Tomcat 7.0.0 through 7.0.109
Description:
This issue is being tracked as lo
References:
https://lists.apache.org/thread/tyqcqk99g7ghgk22641vf67vghcyswnw https://tomcat.apache.org/ https://www.cve.org/CVERecord?id=CVE-2026-78383 https://issues.apache.org/jira/browse/lo
Severity: important
Affected versions:
- Apache Tomcat 11.0.0-M5 through 11.0.25 - Apache Tomcat 10.1.8 through 10.1.59 - Apache Tomcat 9.0.74 through 9.0.121 - Apache Tomcat 8.5.88 through 8.5.100 - Apache Tomcat through 7.0.109 unaffected
Description:
The following versions were EOL at the time the CVE was created but are
References:
https://lists.apache.org/thread/mb1pjjooqytrl6hbvbt3rw1lqwlon4cz https://tomcat.apache.org/ https://www.cve.org/CVERecord?id=CVE-2026-77791
Severity: low
Affected versions:
- Apache Tomcat 11.0.0-M1 through 11.0.25 - Apache Tomcat 10.1.0-M1 through 10.1.59 - Apache Tomcat 9.0.39 through 9.0.121 - Apache Tomcat 8.56.59 through 8.5.100 - Apache Tomcat through 7.0.109 unaffected
Description:
The following versions were EOL at the time the CVE was created but are
References:
https://lists.apache.org/thread/y5r9fvjo7ol24mkoyoc0st8bqrfyqcyn https://tomcat.apache.org/ https://www.cve.org/CVERecord?id=CVE-2026-77762
Severity: low
Affected versions:
- Apache Tomcat 11.0.0-M1 through 11.0.25 - Apache Tomcat 10.1.0-M1 through 10.1.59 - Apache Tomcat 9.0.47 through 9.0.121 - Apache Tomcat 8.5.67 through 8.5.100 - Apache Tomcat through 7.0.109 unaffected
Description:
The following versions were EOL at the time the CVE was created but are
References:
https://lists.apache.org/thread/bl5b6rxqh3vb2k9bj2794vhor7o6xl3z https://tomcat.apache.org/ https://www.cve.org/CVERecord?id=CVE-2026-77756
Severity: important
Affected versions:
- Apache Tomcat 11.0.0-M1 through 11.0.25 - Apache Tomcat 10.1.0-M1 through 10.1.59 - Apache Tomcat 9.0.0.M1 through 9.0.121 - Apache Tomcat 8.5.0 through 8.5.100 - Apache Tomcat 7.0.43 through 7.0.109 - Apache Tomcat before 7.0.43
Description:
The following versions were EOS at the time the CVE was created but are
References:
https://lists.apache.org/thread/45mxk8nj2q8pkhct6lfxkvtm2jpywrsp https://tomcat.apache.org/ https://www.cve.org/CVERecord?id=CVE-2026-76183
Severity: low
Affected versions:
- Apache Tomcat 11.0.0-M1 through 11.0.25 - Apache Tomcat 10.1.0-M1 through 10.1.59 - Apache Tomcat 9.0.0.M4 through 9.0.121 - Apache Tomcat 8.5.0 through 8.5.100 - Apache Tomcat through 7.0.109 unaffected
Description:
The following versions were EOL at the time the CVE was created but are
Credit:
0xCc.zhang (finder)
References:
https://lists.apache.org/thread/njjcdkkzqyzx4n3ffc4ffjmyh5mpl1gr https://tomcat.apache.org/ https://www.cve.org/CVERecord?id=CVE-2026-75973
Severity: moderate
Affected versions:
- Apache Tomcat 11.0.0-M1 through 11.0.25 - Apache Tomcat 10.1.0-M1 through 10.1.59 - Apache Tomcat 9.0.0.M1 through 9.0.121 - Apache Tomcat 8.5.0 through 8.50.100 - Apache Tomcat through 8.5.0 unaffected
Description:
The following versions were EOL at the time the CVE was created but are
Credit:
arpitjain099 (https://github.com/arpitjain099) (finder)
References:
https://lists.apache.org/thread/r0dj3h1pbn4wv96fhsfrnz3t6874t6do https://tomcat.apache.org/ https://www.cve.org/CVERecord?id=CVE-2026-73581
CLIENTCERT authentication does not fail as expected for some scenarios when soft fail is disabled vulnerability in Apache Tomcat, Apache Tomcat Native.
This issue affects Apache Tomcat: from 11.0.0-M1 through 11.0.18, from 10.1.0-M7 through 10.1.52, from 9.0.83 through 9.0.115; Apache Tomcat Native: from 1.1.23 through 1.1.34, from 1.2.0 through 1.2.39, from 1.3.0 through 1.3.6, from 2.0.0 through 2.0.13.
Users are recommended to upgrade to version Tomcat Native 1.3.7 or 2.0.14 and Tomcat 11.0.20, 10.1.53 and 9.0.116, which fix the issue.
Improper Input Validation vulnerability in Apache Tomcat due to an incomplete fix of CVE-2025-66614.
This issue affects Apache Tomcat: from 11.0.15 through 11.0.19, from 10.1.50 through 10.1.52, from 9.0.113 through 9.0.115.
Users are recommended to upgrade to version 11.0.20, 10.1.53 or 9.0.116, which fix the issue.
Inconsistent Interpretation of HTTP Requests ('HTTP Request/Response Smuggling') vulnerability in Apache Tomcat via invalid chunk extension.
This issue affects Apache Tomcat: from 11.0.0-M1 through 11.0.18, from 10.1.0-M1 through 10.1.52, from 9.0.0.M1 through 9.0.115, 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 11.0.20, 10.1.52 or 9.0.116, which fix the issue.
Configured cipher preference order not preserved vulnerability in Apache Tomcat.
This issue affects Apache Tomcat: from 11.0.16 through 11.0.18, from 10.1.51 through 10.1.52, from 9.0.114 through 9.0.115.
Users are recommended to upgrade to version 11.0.20, 10.1.53 or 9.0.116, which fix the issue.
Padding Oracle vulnerability in Apache Tomcat's EncryptInterceptor with default configuration.
This issue affects Apache Tomcat: from 11.0.0-M1 through 11.0.18, from 10.0.0-M1 through 10.1.52, from 9.0.13 through 9..115, from 8.5.38 through 8.5.100, from 7.0.100 through 7.0.109.
Users are recommended to upgrade to version 11.0.19, 10.1.53 and 9.0.116, which fixes the issue.
Occasional URL redirection to untrusted Site ('Open Redirect') vulnerability in Apache Tomcat via the LoadBalancerDrainingValve.
This issue affects Apache Tomcat: from 11.0.0-M1 through 11.0.18, from 10.1.0-M1 through 10.1.52, from 9.0.0.M23 through 9.0.115, from 8.5.30 through 8.5.100. Other, unsupported versions may also be affected
Users are recommended to upgrade to version 11.0.20, 10.1.53 or 9.0.116, which fix the issue.