{"id":"CVE-2018-8037","aliases":["ALSA-2019:1529","DSA-4281-1","EUVD-2018-0523","GHSA-6v52-mj5r-7j2m","RHSA-2018:2868","RHSA-2019:1529","RLSA-2019:1529","SUSE-SU-2018:2699-1","SUSE-SU-2018:3011-1","SUSE-SU-2018:3388-1","UBUNTU-CVE-2018-8037","openSUSE-SU-2024:11468-1","openSUSE-SU-2024:13441-1"],"status":"published","title":"Apache Tomcat Race Condition vulnerability","description":"If an async request was completed by the application at the same time as the container triggered the async timeout, a race condition existed that could result in a user seeing a response intended for a different user. An additional issue was present in the NIO and NIO2 connectors that did not correctly track the closure of the connection when an async request was completed by the application and timed out by the container at the same time. This could also result in a user seeing a response intended for another user. Versions Affected: Apache Tomcat 9.0.0.M9 to 9.0.9 and 8.5.5 to 8.5.31.","severity":{"version":"3.0","score":5.9,"vector":"CVSS:3.0/AV:N/AC:H/PR:N/UI:N/S:U/C:H/I:N/A:N","level":"medium","assessor":"primary","from":"nvd"},"epss":{"day":"2026-11-07","score":0.11156,"percentile":0.95973,"model":"v2026.06.15"},"facts":{"in_kev":false,"known_exploited":false,"public_exploit":false,"fix_available":true},"cwes":["CWE-362"],"published":"2018-08-02T14:00:00Z","modified":"2026-10-29T11:00:06Z","fixes":[{"ecosystem":"Maven","package":"org.apache.tomcat.embed:tomcat-embed-core","fixed_in":["8.5.32","9.0.10"],"sources":["ghsa","osv"]},{"ecosystem":"Ubuntu:18.04:LTS","package":"tomcat8","fixed_in":["8.5.39-1ubuntu1~18.04.1"],"sources":["osv"]}],"affected":[{"source":"ghsa","ecosystem":"Maven","package":"org.apache.tomcat.embed:tomcat-embed-core","ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"8.5.5"},{"fixed":"8.5.32"}]}]},{"source":"ghsa","ecosystem":"Maven","package":"org.apache.tomcat.embed:tomcat-embed-core","ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"9.0.0.M9"},{"fixed":"9.0.10"}]}]},{"source":"osv","ecosystem":"AlmaLinux:8","package":"apache-commons-collections","ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"},{"fixed":"3.2.2-10.module_el8.5.0+2577+9e95fe00"}]}],"bundled":4},{"source":"osv","ecosystem":"AlmaLinux:8","package":"apache-commons-collections","ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"},{"fixed":"3.2.2-10.module_el8.5.0+150+5f0dbea0"}]}],"bundled":4},{"source":"osv","ecosystem":"AlmaLinux:8","package":"apache-commons-lang","ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"},{"fixed":"2.6-21.module_el8.5.0+150+5f0dbea0"}]}],"bundled":4},{"source":"osv","ecosystem":"AlmaLinux:8","package":"apache-commons-lang","ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"},{"fixed":"2.6-21.module_el8.5.0+2577+9e95fe00"}]}],"bundled":4},{"source":"osv","ecosystem":"AlmaLinux:8","package":"bea-stax-api","ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"},{"fixed":"1.2.0-16.module_el8.5.0+150+5f0dbea0"}]}],"bundled":4},{"source":"osv","ecosystem":"AlmaLinux:8","package":"bea-stax-api","ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"},{"fixed":"1.2.0-16.module_el8.5.0+2577+9e95fe00"}]}],"bundled":4},{"source":"osv","ecosystem":"AlmaLinux:8","package":"glassfish-fastinfoset","ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"},{"fixed":"1.2.13-9.module_el8.5.0+150+5f0dbea0"}]}],"bundled":4},{"source":"osv","ecosystem":"AlmaLinux:8","package":"glassfish-fastinfoset","ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"},{"fixed":"1.2.13-9.module_el8.5.0+2577+9e95fe00"}]}],"bundled":4},{"source":"osv","ecosystem":"AlmaLinux:8","package":"glassfish-jaxb-api","ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"},{"fixed":"2.2.12-8.module_el8.5.0+2577+9e95fe00"}]}],"bundled":4},{"source":"osv","ecosystem":"AlmaLinux:8","package":"glassfish-jaxb-api","ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"},{"fixed":"2.2.12-8.module_el8.5.0+150+5f0dbea0"}]}],"bundled":4},{"source":"osv","ecosystem":"AlmaLinux:8","package":"glassfish-jaxb-core","ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"},{"fixed":"2.2.11-11.module_el8.5.0+150+5f0dbea0"}]}],"bundled":4},{"source":"osv","ecosystem":"AlmaLinux:8","package":"glassfish-jaxb-core","ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"},{"fixed":"2.2.11-11.module_el8.5.0+2577+9e95fe00"}]}],"bundled":4},{"source":"osv","ecosystem":"AlmaLinux:8","package":"glassfish-jaxb-runtime","ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"},{"fixed":"2.2.11-11.module_el8.5.0+2577+9e95fe00"}]}],"bundled":4},{"source":"osv","ecosystem":"AlmaLinux:8","package":"glassfish-jaxb-runtime","ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"},{"fixed":"2.2.11-11.module_el8.5.0+150+5f0dbea0"}]}],"bundled":4},{"source":"osv","ecosystem":"AlmaLinux:8","package":"glassfish-jaxb-txw2","ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"},{"fixed":"2.2.11-11.module_el8.5.0+2577+9e95fe00"}]}],"bundled":4},{"source":"osv","ecosystem":"AlmaLinux:8","package":"glassfish-jaxb-txw2","ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"},{"fixed":"2.2.11-11.module_el8.5.0+150+5f0dbea0"}]}],"bundled":4},{"source":"osv","ecosystem":"AlmaLinux:8","package":"jackson-module-jaxb-annotations","ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"},{"fixed":"2.7.6-4.module_el8.5.0+150+5f0dbea0"}]}],"bundled":4},{"source":"osv","ecosystem":"AlmaLinux:8","package":"jackson-module-jaxb-annotations","ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"},{"fixed":"2.7.6-4.module_el8.5.0+2577+9e95fe00"}]}],"bundled":4},{"source":"osv","ecosystem":"AlmaLinux:8","package":"jakarta-commons-httpclient","ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"},{"fixed":"1:3.1-28.module_el8.5.0+2577+9e95fe00"}]}],"bundled":4},{"source":"osv","ecosystem":"AlmaLinux:8","package":"jakarta-commons-httpclient","ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"},{"f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an async request was completed by the application at the same time as the container triggered the async timeout, a race condition existed that could result in a user seeing a response intended for a different user. An additional issue was present in the NIO and NIO2 connectors that did not correctly track the closure of the connection when an async request was completed by the application and timed out by the container at the same time. This could also result in a user seeing a response intended for another user. Versions Affected: Apache Tomcat 9.0.0.M9 to 9.0.9 and 8.5.5 to 8.5.31.","status":"published","published":"2018-08-02T14:00:00Z","modified":"2024-09-16T17:07:40.261Z","updated_at":"2026-11-02T14:35:04.172099Z"}],"euvd":[{"id":"EUVD-2018-0523","description":"If an async request was completed by the application at the same time as the container triggered the async timeout, a race condition existed that could result in a user seeing a response intended for a different user. An additional issue was present in the NIO and NIO2 connectors that did not correctly track the closure of the connection when an async request was completed by the application and timed out by the container at the same time. This could also result in a user seeing a response intended for another user. Versions Affected: Apache Tomcat 9.0.0.M9 to 9.0.9 and 8.5.5 to 8.5.31.","status":"published","published":"2018-08-02T14:00:00Z","modified":"2024-09-16T17:07:40Z","updated_at":"2026-11-03T00:55:45.275329Z"}],"ghsa":[{"id":"GHSA-6v52-mj5r-7j2m","title":"Apache Tomcat Race Condition vulnerability","description":"If an async request was completed by the application at the same time as the container triggered the async timeout, a race condition existed that could result in a user seeing a response intended for a different user. An additional issue was present in the NIO and NIO2 connectors that did not correctly track the closure of the connection when an async request was completed by the application and timed out by the container at the same time. This could also result in a user seeing a response intended for another user. Versions Affected: Apache Tomcat 9.0.0.M9 to 9.0.9 and 8.5.5 to 8.5.31.","status":"published","published":"2018-10-17T16:33:02Z","modified":"2024-02-22T21:06:51Z","cvss":[{"version":"3.0","score":5.9,"vector":"CVSS:3.0/AV:N/AC:H/PR:N/UI:N/S:U/C:H/I:N/A:N","level":"medium"}],"cwes":["CWE-362"],"updated_at":"2026-11-02T14:37:38.935144Z"}],"nvd":[{"id":"CVE-2018-8037","description":"If an async request was completed by the application at the same time as the container triggered the async timeout, a race condition existed that could result in a user seeing a response intended for a different user. An additional issue was present in the NIO and NIO2 connectors that did not correctly track the closure of the connection when an async request was completed by the application and timed out by the container at the same time. This could also result in a user seeing a response intended for another user. Versions Affected: Apache Tomcat 9.0.0.M9 to 9.0.9 and 8.5.5 to 8.5.31.","status":"published","published":"2018-08-02T14:29:00.363Z","modified":"2026-06-17T02:04:08.897Z","cvss":[{"version":"3.0","score":5.9,"vector":"CVSS:3.0/AV:N/AC:H/PR:N/UI:N/S:U/C:H/I:N/A:N","level":"medium","assessor":"primary"},{"version":"2.0","score":4.3,"vector":"AV:N/AC:M/Au:N/C:P/I:N/A:N","level":"medium","assessor":"primary"}],"cwes":["CWE-362"],"updated_at":"2026-11-02T14:04:35.310988Z"}],"osv":[{"id":"CVE-2018-8037","description":"If an async request was completed by the application at the same time as the container triggered the async timeout, a race condition existed that could result in a user seeing a response intended for a different user. An additional issue was present in the NIO and NIO2 connectors that did not correctly track the closure of the connection when an async request was completed by the application and timed out by the container at the same time. This could also result in a user seeing a response intended for another user. Versions Affected: Apache Tomcat 9.0.0.M9 to 9.0.9 and 8.5.5 to 8.5.31.","status":"published","published":"2018-08-02T14:29:00.363Z","modified":"2026-10-24T10:31:00.983408371Z","cvss":[{"version":"3.0","score":5.9,"vector":"CVSS:3.0/AV:N/AC:H/PR:N/UI:N/S:U/C:H/I:N/A:N","level":"medium"}],"updated_at":"2026-11-02T15:44:09.74357Z"},{"id":"GHSA-6v52-mj5r-7j2m","title":"Apache Tomcat Race Condition vulnerability","description":"If an async request was completed by the application at the same time as the container triggered the async timeout, a race condition existed that could result in a user seeing a response intended for a different user. An additional issue was present in the NIO and NIO2 connectors that did not correctly track the closure of the connection when an async request was completed by the application and timed out by the container at the same time. This could also result in a user seeing a response intended for another user. Versions Affected: Apache Tomcat 9.0.0.M9 to 9.0.9 and 8.5.5 to 8.5.31.","status":"published","published":"2018-10-17T16:33:02Z","modified":"2024-03-11T05:32:05.311159Z","cvss":[{"version":"3.0","score":5.9,"vector":"CVSS:3.0/AV:N/AC:H/PR:N/UI:N/S:U/C:H/I:N/A:N","level":"medium"}],"cwes":["CWE-362"],"updated_at":"2026-11-02T15:46:39.965326Z"},{"id":"RHSA-2018:2868","title":"Red Hat Security Advisory: Red Hat JBoss Web Server 5.0 Service Pack 1 security and bug fix update","status":"published","published":"2024-09-13T19:49:32Z","modified":"2026-08-05T10:05:44Z","cvss":[{"version":"3.0","score":9.1,"vector":"CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:N","level":"critical"}],"updated_at":"2026-11-02T15:53:05.383061Z"},{"id":"RHSA-2019:1529","title":"Red Hat Security Advisory: pki-deps:10.6 security update","status":"published","published":"2024-10-21T22:15:11Z","modified":"2026-08-05T10:06:12Z","cvss":[{"version":"3.0","score":9.1,"vector":"CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:N","level":"critical"}],"updated_at":"2026-11-02T15:53:06.0195Z"},{"id":"RLSA-2019:1529","title":"Important: pki-deps:10.6 security update","description":"The Public Key Infrastructure (PKI) Deps module contains fundamental packages required as dependencies for the pki-core module by Rocky Enterprise Software Foundation Certificate System.\n\nSecurity Fix(es):\n\n* tomcat: Due to a mishandling of close in NIO/NIO2 connectors user sessions can get mixed up (CVE-2018-8037)\n\n* tomcat: Insecure defaults in CORS filter enable 'supportsCredentials' for all origins (CVE-2018-8014)\n\n* tomcat: Open redirect in default servlet (CVE-2018-11784)\n\n* tomcat: Host name verification missing in WebSocket client (CVE-2018-8034)\n\nFor more details about the security issue(s), including the impact, a CVSS score, acknowledgments, and other related information, refer to the CVE page(s) listed in the References section.","status":"published","published":"2019-06-18T16:36:21Z","modified":"2026-02-04T07:40:26.302524Z","cvss":[{"version":"3.0","score":9.1,"vector":"CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:N","level":"critical"}],"updated_at":"2026-11-02T15:53:23.969672Z"},{"id":"UBUNTU-CVE-2018-8037","description":"If an async request was completed by the application at the same time as the container triggered the async timeout, a race condition existed that could result in a user seeing a response intended for a different user. An additional issue was present in the NIO and NIO2 connectors that did not correctly track the closure of the connection when an async request was completed by the application and timed out by the container at the same time. This could also result in a user seeing a response intended for another user. Versions Affected: Apache Tomcat 9.0.0.M9 to 9.0.9 and 8.5.5 to 8.5.31.","status":"published","published":"2018-08-02T14:29:00Z","modified":"2025-07-16T07:39:04.729434Z","cvss":[{"version":"3.0","score":5.9,"vector":"CVSS:3.0/AV:N/AC:H/PR:N/UI:N/S:U/C:H/I:N/A:N","level":"medium"}],"updated_at":"2026-11-02T15:54:18.772093Z"},{"id":"ALSA-2019:1529","title":"Important: pki-deps:10.6 security update","description":"The Public Key Infrastructure (PKI) Deps module contains fundamental packages required as dependencies for the pki-core module by AlmaLinux Certificate System.\n\nSecurity Fix(es):\n\n* tomcat: Due to a mishandling of close in NIO/NIO2 connectors user sessions can get mixed up (CVE-2018-8037)\n\n* tomcat: Insecure defaults in CORS filter enable 'supportsCredentials' for all origins (CVE-2018-8014)\n\n* tomcat: Open redirect in default servlet (CVE-2018-11784)\n\n* tomcat: Host name verification missing in WebSocket client (CVE-2018-8034)\n\nFor more details about the security issue(s), including the impact, a CVSS score, acknowledgments, and other related information, refer to the CVE page(s) listed in the References section.","status":"published","published":"2019-06-18T16:36:21Z","modified":"2026-10-29T11:00:06.255031359Z","updated_at":"2026-11-02T15:27:51.196609Z"},{"id":"DSA-4281-1","title":"tomcat8 - security update","status":"published","published":"2018-08-29T00:00:00Z","modified":"2026-03-09T02:09:19.490837Z","updated_at":"2026-11-02T15:46:16.862196Z"},{"id":"openSUSE-SU-2024:11468-1","title":"tomcat-9.0.36-8.4 on GA media","description":"These are all security issues fixed in the tomcat-9.0.36-8.4 package on the GA media of openSUSE Tumbleweed.","status":"published","published":"2024-06-15T00:00:00Z","modified":"2026-02-04T03:21:40.917277Z","updated_at":"2026-11-02T16:58:35.195147Z"},{"id":"openSUSE-SU-2024:13441-1","title":"tomcat10-10.1.14-1.1 on GA media","description":"These are all security issues fixed in the tomcat10-10.1.14-1.1 package on the GA media of openSUSE Tumbleweed.","status":"published","published":"2024-06-15T00:00:00Z","modified":"2026-02-04T02:52:52.718146Z","updated_at":"2026-11-02T16:58:36.327643Z"},{"id":"SUSE-SU-2018:2699-1","title":"Security update for tomcat","description":"This update for tomcat to 8.0.53 fixes the following issues:\n\nSecurity issue fixed:\n\n- CVE-2018-1336: An improper handing of overflow in the UTF-8 decoder with\n  supplementary characters could have lead to an infinite loop in the decoder\n  causing a Denial of Service (bsc#1102400).\n- CVE-2018-8034: The host name verification when using TLS with the WebSocket\n  client was missing. It is now enabled by default (bsc#1102379).\n- CVE-2018-8037: If an async request was completed by the application at the\n  same time as the container triggered the async timeout, a race condition\n  existed that could have resulted in a user seeing a response intended for a\n  different user. An additional issue was present in the NIO and NIO2 connectors\n  that did not correctly track the closure of the connection when an async\n  request was completed by the application and timed out by the container at the\n  same time. This could also have resulted in a user seeing a response intended\n  for another user (bsc#1102410).\n- CVE-2018-8014: Fix insecure default CORS filter settings (bsc#1093697).\n\nBug fixes:\n\n- bsc#1067720: Avoid overwriting of customer's configuration during update.\n- bsc#1095472: Add Obsoletes for tomcat6 packages.\n","status":"published","published":"2018-09-13T05:57:00Z","modified":"2026-02-04T03:52:19.121658Z","updated_at":"2026-11-02T15:53:45.378228Z"},{"id":"SUSE-SU-2018:3011-1","title":"Security update for tomcat","description":"This update for tomcat to version 9.0.10 fixes the following issues:\n\nSecurity issues fixed:\n\n- CVE-2018-1336: An improper handing of overflow in the UTF-8 decoder with\n  supplementary characters could have lead to an infinite loop in the decoder\n  causing a Denial of Service (bsc#1102400).\n- CVE-2018-8014: Fix insecure default CORS filter settings (bsc#1093697).\n- CVE-2018-8034: The host name verification when using TLS with the WebSocket\n  client was missing. It is now enabled by default (bsc#1102379).\n- CVE-2018-8037: If an async request was completed by the application at the\n  same time as the container triggered the async timeout, a race condition\n  existed that could have resulted in a user seeing a response intended for a\n  different user. An additional issue was present in the NIO and NIO2 connectors\n  that did not correctly track the closure of the connection when an async\n  request was completed by the application and timed out by the container at the\n  same time. This could also have resulted in a user seeing a response intended\n  for another user (bsc#1102410).\n\nBug fixes:\n\n- Avoid overwriting of customer's configuration during update (bsc#1067720)\n- Disable adding OSGi metadata to JAR files\n\n- See changelog at http://tomcat.apache.org/tomcat-9.0-doc/changelog.html#Tomcat_9.0.10_(markt)\n","status":"published","published":"2018-11-28T08:58:40Z","modified":"2026-02-04T03:35:11.798702Z","updated_at":"2026-11-02T15:53:45.378228Z"},{"id":"SUSE-SU-2018:3388-1","title":"Security update for tomcat","description":"This update for tomcat to version 8.0.53 fixes the following security issues:\n\n- CVE-2018-11784: When the default servlet in Apache Tomcat returned\n  a redirect to a directory (e.g. redirecting to '/foo/' when the user\n  requested '/foo') a specially crafted URL could be used to cause the\n  redirect to be generated to any URI of the attackers choice. (bsc#1110850)\n- CVE-2018-1336: An improper handing of overflow in the UTF-8 decoder with\n  supplementary characters could have lead to an infinite loop in the decoder\n  causing a Denial of Service (bsc#1102400)\n- CVE-2018-8034: The host name verification when using TLS with the WebSocket\n  client was missing. It is now enabled by default (bsc#1102379)\n- CVE-2018-8037: If an async request was completed by the application at the\n  same time as the container triggered the async timeout, a race condition\n  existed that could have resulted in a user seeing a response intended for a\n  different user. An additional issue was present in the NIO and NIO2 connectors\n  that did not correctly track the closure of the connection when an async\n  request was completed by the application and timed out by the container at the\n  same time. This could also have resulted in a user seeing a response intended\n  for another user (bsc#1102410)\n- CVE-2018-1305: Fixed late application of security constraints that can lead\n  to resource exposure for unauthorised users (bsc#1082481).\n- CVE-2018-1304: Fixed incorrect handling of empty string URL in security\n  constraints that can lead to unitended exposure of resources (bsc#1082480).\n- CVE-2017-15706: Fixed incorrect documentation of CGI Servlet search algorithm\n  that may lead to misconfiguration (bsc#1078677).\n- CVE-2018-8014: The defaults settings for the CORS filter were insecure and\n  enable 'supportsCredentials' for all origins (bsc#1093697).\n","status":"published","published":"2018-10-24T11:48:05Z","modified":"2026-02-04T04:07:58.37791Z","updated_at":"2026-11-02T15:53:45.378228Z"}]}}