{"id":"CVE-2020-13935","revision":"bdd8c9ac9ef84af89e6662252e3e3ea1","records":[{"revision":"bdd8c9ac9ef84af89e6662252e3e3ea1","observedAt":"2026-10-23T15:48:27.903+00:00","statement":{"source":"cve-program","id":"CVE-2020-13935","aliases":[],"title":"The payload length in a WebSocket frame was not correctly validated in Apache Tomcat 10.0.0-M1 to 10.0.0-M6, 9.0.0.M1 to 9.0.36, 8.5.0 to 8.5.56 and 7.0.27 to 7.0.104. Invalid payload lengths could trigger an infinite loop. Multiple request…","description":"The payload length in a WebSocket frame was not correctly validated in Apache Tomcat 10.0.0-M1 to 10.0.0-M6, 9.0.0.M1 to 9.0.36, 8.5.0 to 8.5.56 and 7.0.27 to 7.0.104. Invalid payload lengths could trigger an infinite loop. Multiple requests with invalid payload lengths could lead to a denial of service.","state":0,"publishedAt":"2020-07-14T15:00:21+00:00","modifiedAt":"2026-10-08T21:03:33.405+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.M1 to 9.0.36, 8.5.0 to 8.5.56, 7.0.27 to 7.0.104\"\n                        }\n                    ]\n                }"}],"metrics":[],"references":["https://lists.apache.org/thread.html/rd48c72bd3255bda87564d4da3791517c074d94f8a701f93b85752651%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://usn.ubuntu.com/4448-1/","https://www.oracle.com/security-alerts/cpuoct2020.html","https://security.netapp.com/advisory/ntap-20200724-0003/","https://kc.mcafee.com/corporate/index?page=content&id=SB10332","https://usn.ubuntu.com/4596-1/","https://lists.apache.org/thread.html/r4e5d3c09f4dd2923191e972408b40fb8b42dbff0bc7904d44b651e50%40%3Cusers.tomcat.apache.org%3E","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/cpuoct2021.html","https://www.oracle.com/security-alerts/cpujan2022.html","https://www.oracle.com/security-alerts/cpuapr2022.html"],"sourceUrl":"https://www.cve.org/CVERecord?id=CVE-2020-13935","license":"CVE Program Terms of Use","key":"cve-program:CVE-2020-13935","identifiers":["CVE-2020-13935"]},"retained":false,"historicalAffected":[]}],"coverage":[]}