{"id":"CVE-2020-13934","revision":"2b5a852945bf4206b510115830f70012","records":[{"revision":"2b5a852945bf4206b510115830f70012","observedAt":"2026-10-23T15:48:27.903+00:00","statement":{"source":"cve-program","id":"CVE-2020-13934","aliases":[],"title":"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 OutOfMemoryEx…","description":"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.","state":0,"publishedAt":"2020-07-14T14:59:11+00:00","modifiedAt":"2026-10-08T21:13:57.516+00:00","affected":[{"ecosystem":"Vendor product","name":"Apache Tomcat","ranges":[],"versions":[],"rawVersionEvidence":"{\n                    \"product\": \"Apache Tomcat\",\n                    \"vendor\": \"n/a\",\n                    \"versions\": [\n                        {\n                            \"status\": \"affected\",\n                            \"version\": \"Apache Tomcat 10.0.0-M1 to 10.0.0-M6, 9.0.0.M5 to 9.0.36, 8.5.1 to 8.5.56\"\n                        }\n                    ]\n                }"}],"metrics":[],"references":["https://lists.apache.org/thread.html/r61f411cf82488d6ec213063fc15feeeb88e31b0ca9c29652ee4f962e%40%3Cannounce.tomcat.apache.org%3E","https://www.debian.org/security/2020/dsa-4727","https://lists.debian.org/debian-lts-announce/2020/07/msg00017.html","http://lists.opensuse.org/opensuse-security-announce/2020-07/msg00084.html","http://lists.opensuse.org/opensuse-security-announce/2020-07/msg00088.html","https://lists.apache.org/thread.html/ra072b1f786e7d139e86f1d1145572e0ff71cef38a96d9c6f5362aac8%40%3Cdev.tomcat.apache.org%3E","https://www.oracle.com/security-alerts/cpuoct2020.html","https://security.netapp.com/advisory/ntap-20200724-0003/","https://usn.ubuntu.com/4596-1/","https://www.oracle.com/security-alerts/cpujan2021.html","https://www.oracle.com/security-alerts/cpuApr2021.html","https://www.oracle.com//security-alerts/cpujul2021.html","https://www.oracle.com/security-alerts/cpujan2022.html"],"sourceUrl":"https://www.cve.org/CVERecord?id=CVE-2020-13934","license":"CVE Program Terms of Use","key":"cve-program:CVE-2020-13934","identifiers":["CVE-2020-13934"]},"retained":false,"historicalAffected":[]}],"coverage":[]}