Disclosure summary
An h2c direct connection to Apache Tomcat 10.0.0-M1 to 10.0.0-M6, 9.0.0.M5 to 9.0.36 and 8.5.1 to 8.5.56 did not release the HTTP/1.1 processor after the upgrade to HTTP/2. If a sufficient number of such requests were made, an OutOfMemoryException could occur leading to a denial of service.
Source-reported weakness categories
CWE-401, CWE-476
Source-specific records & product guidance
Sources retain their own attribution and scoring. Follow the original record to confirm affected versions, fixed releases, and configuration conditions.
NIST National Vulnerability Database · NVD-CVE-2020-13934
Open original source · Updated Oct 08, 2026
Only CPE matches marked vulnerable=true are indexed. AND/OR platform conditions must be checked in the original NVD record.
| Vendor | Product / association | Version / bounds |
|---|---|---|
| apache | tomcat | * {"versionStartIncluding":"9.0.1","versionEndIncluding":"9.0.36"} |
| apache | tomcat | 9.0.0 |
| apache | tomcat | 9.0.0 |
| apache | tomcat | 9.0.0 |
| apache | tomcat | 9.0.0 |
| apache | tomcat | 9.0.0 |
| apache | tomcat | 9.0.0 |
| apache | tomcat | 9.0.0 |
| apache | tomcat | 9.0.0 |
| apache | tomcat | 9.0.0 |
| apache | tomcat | 9.0.0 |
| apache | tomcat | 9.0.0 |
| apache | tomcat | 9.0.0 |
| apache | tomcat | 9.0.0 |
| apache | tomcat | 9.0.0 |
| apache | tomcat | 9.0.0 |
| apache | tomcat | 9.0.0 |
| apache | tomcat | 9.0.0 |
| apache | tomcat | 9.0.0 |
| apache | tomcat | 9.0.0 |
| apache | tomcat | 9.0.0 |
| apache | tomcat | 9.0.0 |
| apache | tomcat | 9.0.0 |
| apache | tomcat | 9.0.0 |
| apache | tomcat | 10.0.0 |
| apache | tomcat | 10.0.0 |
| apache | tomcat | 10.0.0 |
| apache | tomcat | 10.0.0 |
| apache | tomcat | 10.0.0 |
| apache | tomcat | 10.0.0 |
| debian | debian_linux | 9.0 |
| debian | debian_linux | 10.0 |
| netapp | oncommand_system_manager | * {"versionStartIncluding":"3.0.0","versionEndIncluding":"3.1.3"} |
| opensuse | leap | 15.1 |
| opensuse | leap | 15.2 |
| canonical | ubuntu_linux | 20.04 |
| oracle | agile_engineering_data_management | 6.2.1.0 |
| oracle | agile_product_lifecycle_management | 9.3.3 |
| oracle | agile_product_lifecycle_management | 9.3.5 |
| oracle | agile_product_lifecycle_management | 9.3.6 |
| oracle | communications_instant_messaging_server | 10.0.1.5.0 |
| oracle | fmw_platform | 12.2.1.3.0 |
| oracle | fmw_platform | 12.2.1.4.0 |
| oracle | instantis_enterprisetrack | 17.1 |
| oracle | instantis_enterprisetrack | 17.2 |
| oracle | instantis_enterprisetrack | 17.3 |
| oracle | managed_file_transfer | 12.2.1.3.0 |
| oracle | managed_file_transfer | 12.2.1.4.0 |
| oracle | mysql_enterprise_monitor | * {"versionEndIncluding":"8.0.21"} |
| oracle | siebel_ui_framework | * {"versionEndIncluding":"20.12"} |
| oracle | workload_manager | 12.2.0.1 |
| oracle | workload_manager | 18c |
| oracle | workload_manager | 19c |
Original records & references
- NIST NVD record
- CVE Program record
- lists.apache.org — Mailing List, Release Notes, Vendor Advisory
- lists.apache.org
- lists.debian.org — Mailing List, Third Party Advisory
- security.netapp.com — Third Party Advisory
- usn.ubuntu.com — Third Party Advisory
- www.debian.org — Third Party Advisory
- www.oracle.com — Patch, Third Party Advisory
- www.oracle.com — Patch, Third Party Advisory
- www.oracle.com — Patch, Third Party Advisory
- www.oracle.com — Patch, Third Party Advisory
- www.oracle.com — Patch, Third Party Advisory
- lists.apache.org — Mailing List, Release Notes, Vendor Advisory
- lists.apache.org
- lists.debian.org — Mailing List, Third Party Advisory
- security.netapp.com — Third Party Advisory
- usn.ubuntu.com — Third Party Advisory
- www.debian.org — Third Party Advisory
- www.oracle.com — Patch, Third Party Advisory
- www.oracle.com — Patch, Third Party Advisory
- www.oracle.com — Patch, Third Party Advisory
- www.oracle.com — Patch, Third Party Advisory
- www.oracle.com — Patch, Third Party Advisory
PUBLISHED 2020-07-14T11:15:11-04:00
MODIFIED 2026-10-08T18:16:56-04:00
INGESTED 2026-10-10T20:50:19-04:00