{"id":"CVE-2020-1935","details":"In Apache Tomcat 9.0.0.M1 to 9.0.30, 8.5.0 to 8.5.50 and 7.0.0 to 7.0.99 the HTTP header parsing code used an approach to end-of-line parsing that allowed some invalid HTTP headers to be parsed as valid. This led to a possibility of HTTP Request Smuggling if Tomcat was located behind a reverse proxy that incorrectly handled the invalid Transfer-Encoding header in a particular manner. Such a reverse proxy is considered unlikely.","aliases":["BIT-tomcat-2020-1935","GHSA-qxf4-chvg-4r8r"],"modified":"2026-04-16T00:04:48.535441770Z","published":"2020-02-24T22:15:11.980Z","related":["CGA-j6hw-gf79-vc9x","SUSE-SU-2020:0598-1","SUSE-SU-2020:0631-1","SUSE-SU-2020:0632-1","SUSE-SU-2020:2611-1","openSUSE-SU-2020:0345-1","openSUSE-SU-2024:11468-1","openSUSE-SU-2024:13441-1"],"database_specific":{"unresolved_ranges":[{"source":"CPE_FIELD","extracted_events":[{"introduced":"3.0.0"},{"last_affected":"3.1.3"}],"cpe":"cpe:2.3:a:netapp:oncommand_system_manager:*:*:*:*:*:*:*:*"},{"source":"CPE_FIELD","extracted_events":[{"last_affected":"6.2.1.0"}],"cpe":"cpe:2.3:a:oracle:agile_engineering_data_management:6.2.1.0:*:*:*:*:*:*:*"},{"source":"CPE_FIELD","extracted_events":[{"last_affected":"9.3.3"}],"cpe":"cpe:2.3:a:oracle:agile_product_lifecycle_management:9.3.3:*:*:*:*:*:*:*"},{"source":"CPE_FIELD","extracted_events":[{"last_affected":"9.3.5"}],"cpe":"cpe:2.3:a:oracle:agile_product_lifecycle_management:9.3.5:*:*:*:*:*:*:*"},{"source":"CPE_FIELD","extracted_events":[{"last_affected":"9.3.6"}],"cpe":"cpe:2.3:a:oracle:agile_product_lifecycle_management:9.3.6:*:*:*:*:*:*:*"},{"source":"CPE_FIELD","extracted_events":[{"last_affected":"8.1.1"}],"cpe":"cpe:2.3:a:oracle:communications_element_manager:8.1.1:*:*:*:*:*:*:*"},{"source":"CPE_FIELD","extracted_events":[{"last_affected":"8.2.0"}],"cpe":"cpe:2.3:a:oracle:communications_element_manager:8.2.0:*:*:*:*:*:*:*"},{"source":"CPE_FIELD","extracted_events":[{"last_affected":"8.2.1"}],"cpe":"cpe:2.3:a:oracle:communications_element_manager:8.2.1:*:*:*:*:*:*:*"},{"source":"CPE_FIELD","extracted_events":[{"last_affected":"10.0.1.4.0"}],"cpe":"cpe:2.3:a:oracle:communications_instant_messaging_server:10.0.1.4.0:*:*:*:*:*:*:*"},{"source":"CPE_FIELD","extracted_events":[{"last_affected":"1.0.1.2"}],"cpe":"cpe:2.3:a:oracle:health_sciences_empirica_inspections:1.0.1.2:*:*:*:*:*:*:*"},{"source":"CPE_FIELD","extracted_events":[{"last_affected":"7.3.3"}],"cpe":"cpe:2.3:a:oracle:health_sciences_empirica_signal:7.3.3:*:*:*:*:*:*:*"},{"source":"CPE_FIELD","extracted_events":[{"last_affected":"4.2.0"}],"cpe":"cpe:2.3:a:oracle:hospitality_guest_access:4.2.0:*:*:*:*:*:*:*"},{"source":"CPE_FIELD","extracted_events":[{"last_affected":"4.2.1"}],"cpe":"cpe:2.3:a:oracle:hospitality_guest_access:4.2.1:*:*:*:*:*:*:*"},{"source":"CPE_FIELD","extracted_events":[{"last_affected":"11.1.2.4"}],"cpe":"cpe:2.3:a:oracle:hyperion_infrastructure_technology:11.1.2.4:*:*:*:*:*:*:*"},{"source":"CPE_FIELD","extracted_events":[{"introduced":"17.1"},{"last_affected":"17.3"}],"cpe":"cpe:2.3:a:oracle:instantis_enterprisetrack:*:*:*:*:*:*:*:*"},{"source":"CPE_FIELD","extracted_events":[{"introduced":"4.0.0"},{"last_affected":"4.0.12"},{"introduced":"8.0.0"},{"last_affected":"8.0.20"}],"cpe":"cpe:2.3:a:oracle:mysql_enterprise_monitor:*:*:*:*:*:*:*:*"},{"source":"CPE_FIELD","extracted_events":[{"last_affected":"15.0"}],"cpe":"cpe:2.3:a:oracle:retail_order_broker:15.0:*:*:*:*:*:*:*"},{"source":"CPE_FIELD","extracted_events":[{"last_affected":"20.5"}],"cpe":"cpe:2.3:a:oracle:siebel_ui_framework:*:*:*:*:*:*:*:*"},{"source":"CPE_FIELD","extracted_events":[{"last_affected":"6.3.7"}],"cpe":"cpe:2.3:a:oracle:transportation_management:6.3.7:*:*:*:*:*:*:*"},{"source":"CPE_FIELD","extracted_events":[{"last_affected":"12.2.0.1"}],"cpe":"cpe:2.3:a:oracle:workload_manager:12.2.0.1:*:*:*:*:*:*:*"},{"source":"CPE_FIELD","extracted_events":[{"last_affected":"18c"}],"cpe":"cpe:2.3:a:oracle:workload_manager:18c:*:*:*:*:*:*:*"},{"source":"CPE_FIELD","extracted_events":[{"last_affected":"19c"}],"cpe":"cpe:2.3:a:oracle:workload_manager:19c:*:*:*:*:*:*:*"},{"source":"CPE_FIELD","extracted_events":[{"last_affected":"16.04"}],"cpe":"cpe:2.3:o:canonical:ubuntu_linux:16.04:*:*:*:lts:*:*:*"},{"source":"CPE_FIELD","extracted_events":[{"last_affected":"8.0"}],"cpe":"cpe:2.3:o:debian:debian_linux:8.0:*:*:*:*:*:*:*"},{"source":"CPE_FIELD","extracted_events":[{"last_affected":"15.1"}],"cpe":"cpe:2.3:o:opensuse:leap:15.1:*:*:*:*:*:*:*"}]},"references":[{"type":"WEB","url":"https://lists.apache.org/thread.html/r441c1f30a252bf14b07396286f6abd8089ce4240e91323211f1a2d75%40%3Cusers.tomcat.apache.org%3E"},{"type":"WEB","url":"https://lists.apache.org/thread.html/r660cd379afe346f10d72c0eaa8459ccc95d83aff181671b7e9076919%40%3Cusers.tomcat.apache.org%3E"},{"type":"WEB","url":"https://lists.apache.org/thread.html/r7bc994c965a34876bd94d5ff15b4e1e30b6220a15eb9b47c81915b78%40%3Ccommits.tomee.apache.org%3E"},{"type":"WEB","url":"https://lists.apache.org/thread.html/r80e9c8417c77d52c62809168b96912bda70ddf7748f19f8210f745b1%40%3Cusers.tomcat.apache.org%3E"},{"type":"WEB","url":"https://lists.apache.org/thread.html/r9ce7918faf347e7aac32be930bf26c233b0b140fe37af0bb294158b6%40%3Cdev.tomcat.apache.org%3E"},{"type":"WEB","url":"https://lists.apache.org/thread.html/ra5dee390ad2d60307b8362505c059cd6a726de4d146d63dfce1e05e7%40%3Cusers.tomcat.apache.org%3E"},{"type":"WEB","url":"https://lists.apache.or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