Apache Software Foundation Apache Tomcat vulnerabilities

CVE-2024-54677 [MEDIUM] CWE-400 CVE-2024-54677: Uncontrolled Resource Consumption vulnerability in the examples web application provided with Apache Uncontrolled Resource Consumption vulnerability in the examples web application provided with Apache Tomcat leads to denial of service. 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 9.9.97. The following versions were EOL at the time the CVE was created but are known to be aff

CVE-2026-32990 [MEDIUM] CWE-20 CVE-2026-32990: Improper Input Validation vulnerability in Apache Tomcat due to an incomplete fix of CVE-2025-66614. 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.

CVE-2026-88041 CWE-459 CVE-2026-88041: Incomplete cleanup vulnerability in Apache Tomcat allowed an trailer information from a previous req 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 iss

CVE-2025-61795 [MEDIUM] CWE-404 CVE-2025-61795: Improper Resource Shutdown or Release vulnerability in Apache Tomcat. If an error occurred (includi Improper Resource Shutdown or Release vulnerability in Apache Tomcat. If an error occurred (including exceeding limits) during the processing of a multipart upload, temporary copies of the uploaded parts written to disc were not cleaned up immediately but left for the garbage collection process to delete. Depending on JVM settings, application memor

CVE-2023-42794 [MEDIUM] CWE-459 CVE-2023-42794: Incomplete Cleanup vulnerability in Apache Tomcat. The internal fork of Commons FileUpload packaged Incomplete Cleanup vulnerability in Apache Tomcat. The internal fork of Commons FileUpload packaged with Apache Tomcat 9.0.70 through 9.0.80 and 8.5.85 through 8.5.93 included an unreleased, in progress refactoring that exposed a potential denial of service on Windows if a web application opened a stream for an uploaded file but failed to close the

CVE-2017-7674 [MEDIUM] CWE-345 CVE-2017-7674: 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 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.

CVE-2023-28708 [MEDIUM] CWE-523 CVE-2023-28708: When using the RemoteIpFilter with requests received from a reverse proxy via HTTP that include t When using the RemoteIpFilter with requests received from a reverse proxy via HTTP that include the X-Forwarded-Proto header set to https, session cookies created by Apache Tomcat 11.0.0-M1 to 11.0.0.-M2, 10.1.0-M1 to 10.1.5, 9.0.0-M1 to 9.0.71 and 8.5.0 to 8.5.85 did not include the secure attribute. This could result in the user agent transmitting th

CVE-2026-24733 [LOW] CWE-20 CVE-2026-24733: Improper Input Validation vulnerability in Apache Tomcat. Tomcat did not limit HTTP/0.9 requests t Improper Input Validation vulnerability in Apache Tomcat. Tomcat did not limit HTTP/0.9 requests to the GET method. If a security constraint was configured to allow HEAD requests to a URI but deny GET requests, the user could bypass that constraint on GET requests by sending a (specification invalid) HEAD request using HTTP/0.9. This issue affects Apa

CVE-2026-77756 [LOW] CWE-444 CVE-2026-77756: Inconsistent Interpretation of HTTP Requests ('HTTP Request/Response Smuggling') vulnerability in Ap 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 t

CVE-2026-43514 [LOW] CWE-208 CVE-2026-43514: Observable Timing Discrepancy vulnerability when comparing AJP secret in Apache Tomcat. This issue Observable Timing Discrepancy vulnerability when comparing AJP secret in Apache Tomcat. This issue affects Apache Tomcat: from 11.0.0-M1 through 11.0.21, from 10.1.0-M1 through 10.1.54, from 9.0.0.M1 through 9.0.117, from 8.5.0 through 8.5.100, from 7.0.0 through 7.0.109. Older unsupported versions may also be affected. Users are recommended to upgrade

CVE-2021-43980 [LOW] CWE-362 CVE-2021-43980: The simplified implementation of blocking reads and writes introduced in Tomcat 10 and back-ported t The simplified implementation of blocking reads and writes introduced in Tomcat 10 and back-ported to Tomcat 9.0.47 onwards exposed a long standing (but extremely hard to trigger) concurrency bug in Apache Tomcat 10.1.0 to 10.1.0-M12, 10.0.0-M1 to 10.0.18, 9.0.0-M1 to 9.0.60 and 8.5.0 to 8.5.77 that could cause client connections to share an Http11Proc