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CVE-2021-33037

5.3 medium SSVC exploitation: none Modified

Apache Tomcat 10.0.0-M1 to 10.0.6, 9.0.0.M1 to 9.0.46 and 8.5.0 to 8.5.66 did not correctly parse the HTTP transfer-encoding request header in some circumstances leading to the possibility to request smuggling when used with a reverse proxy. Specifically: - Tomcat incorrectly ignored the transfer encoding header if the client declared it would only accept an HTTP/1.0 response; - Tomcat honoured the identify encoding; and - Tomcat did not ensure that, if present, the chunked encoding was the final encoding.

Fix

Patch, vendor advisory and mitigation references on NVD 10

Every line above is quoted from NVD, CISA, Microsoft, the vendor's own advisory or DISA; nothing is generated.

Change history 1

  1. First seenCVSS 5.3 · apache, debian, oracleNVD modified 2026-10-08 22:17

Affected (CPE criteria) 40

  • cpe:2.3:a:apache:tomcat:*:*:*:*:*:*:*:*
  • cpe:2.3:a:apache:tomee:8.0.6:*:*:*:*:*:*:*
  • cpe:2.3:o:debian:debian_linux:9.0:*:*:*:*:*:*:*
  • cpe:2.3:o:debian:debian_linux:10.0:*:*:*:*:*:*:*
  • cpe:2.3:a:oracle:agile_product_lifecycle_management:9.3.6:*:*:*:*:*:*:*
  • cpe:2.3:a:oracle:communications_cloud_native_core_policy:1.14.0:*:*:*:*:*:*:*
  • cpe:2.3:a:oracle:communications_cloud_native_core_service_communication_proxy:1.14.0:*:*:*:*:*:*:*
  • cpe:2.3:a:oracle:communications_diameter_signaling_router:*:*:*:*:*:*:*:*
  • cpe:2.3:a:oracle:communications_instant_messaging_server:10.0.1.5.0:*:*:*:*:*:*:*
  • cpe:2.3:a:oracle:communications_policy_management:12.5.0:*:*:*:*:*:*:*
  • cpe:2.3:a:oracle:communications_pricing_design_center:12.0.0.3.0:*:*:*:*:*:*:*
  • cpe:2.3:a:oracle:communications_session_report_manager:*:*:*:*:*:*:*:*
  • cpe:2.3:a:oracle:communications_session_route_manager:*:*:*:*:*:*:*:*
  • cpe:2.3:a:oracle:graph_server_and_client:*:*:*:*:*:*:*:*
  • cpe:2.3:a:oracle:healthcare_translational_research:4.1.0:*:*:*:*:*:*:*
  • cpe:2.3:a:oracle:hospitality_cruise_shipboard_property_management_system:20.1.0:*:*:*:*:*:*:*
  • cpe:2.3:a:oracle:instantis_enterprisetrack:17.1:*:*:*:*:*:*:*
  • cpe:2.3:a:oracle:instantis_enterprisetrack:17.2:*:*:*:*:*:*:*
  • cpe:2.3:a:oracle:instantis_enterprisetrack:17.3:*:*:*:*:*:*:*
  • cpe:2.3:a:oracle:managed_file_transfer:12.2.1.3.0:*:*:*:*:*:*:*
  • cpe:2.3:a:oracle:managed_file_transfer:12.2.1.4.0:*:*:*:*:*:*:*
  • cpe:2.3:a:oracle:mysql_enterprise_monitor:*:*:*:*:*:*:*:*
  • cpe:2.3:a:oracle:sd-wan_edge:9.0:*:*:*:*:*:*:*
  • cpe:2.3:a:oracle:sd-wan_edge:9.1:*:*:*:*:*:*:*
  • cpe:2.3:a:oracle:secure_global_desktop:5.6:*:*:*:*:*:*:*
  • cpe:2.3:a:oracle:utilities_testing_accelerator:6.0.0.1.1:*:*:*:*:*:*:*
  • cpe:2.3:a:oracle:utilities_testing_accelerator:6.0.0.2.2:*:*:*:*:*:*:*
  • cpe:2.3:a:oracle:utilities_testing_accelerator:6.0.0.3.1:*:*:*:*:*:*:*
  • cpe:2.3:a:mcafee:epolicy_orchestrator:*:*:*:*:*:*:*:*
  • cpe:2.3:a:mcafee:epolicy_orchestrator:5.10.0:-:*:*:*:*:*:*
  • cpe:2.3:a:mcafee:epolicy_orchestrator:5.10.0:update_1:*:*:*:*:*:*
  • cpe:2.3:a:mcafee:epolicy_orchestrator:5.10.0:update_10:*:*:*:*:*:*
  • cpe:2.3:a:mcafee:epolicy_orchestrator:5.10.0:update_2:*:*:*:*:*:*
  • cpe:2.3:a:mcafee:epolicy_orchestrator:5.10.0:update_3:*:*:*:*:*:*
  • cpe:2.3:a:mcafee:epolicy_orchestrator:5.10.0:update_4:*:*:*:*:*:*
  • cpe:2.3:a:mcafee:epolicy_orchestrator:5.10.0:update_5:*:*:*:*:*:*
  • cpe:2.3:a:mcafee:epolicy_orchestrator:5.10.0:update_6:*:*:*:*:*:*
  • cpe:2.3:a:mcafee:epolicy_orchestrator:5.10.0:update_7:*:*:*:*:*:*
  • cpe:2.3:a:mcafee:epolicy_orchestrator:5.10.0:update_8:*:*:*:*:*:*
  • cpe:2.3:a:mcafee:epolicy_orchestrator:5.10.0:update_9:*:*:*:*:*:*

References 32