{"id":"CVE-2021-43045","aliases":["GHSA-868x-rg4c-cjqg"],"url":"https://o3.security/vulnerability/CVE-2021-43045","summary":"Allocation of Resources Without Limits or Throttling in Apache Avro","details":"A vulnerability in the .NET SDK of Apache Avro allows an attacker to allocate excessive resources, potentially causing a denial-of-service attack. This issue affects .NET applications using Apache Avro version 1.10.2 and prior versions. Users should update to version 1.11.0 which addresses this issue.","published":"2022-01-06T18:15:07.863Z","modified":"2026-07-09T05:44:22.468963Z","cvss":{"score":7.5,"severity":"HIGH","vector":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H"},"epss":null,"cisaKev":null,"exploitsKnown":0,"affectedPackages":[{"ecosystem":"NuGet","name":"Apache.Avro","fixedVersion":"1.11.0"}],"fix":{"url":"https://github.com/apache/avro/pull/1357","label":"apache/avro#1357"},"references":[{"type":"ADVISORY","url":"http://www.openwall.com/lists/oss-security/2022/01/06/8"},{"type":"ADVISORY","url":"https://lists.apache.org/thread/5fttw9vk6gd2p3b846nox7hcj5469xfd"},{"type":"ADVISORY","url":"https://nvd.nist.gov/vuln/detail/CVE-2021-43045"},{"type":"WEB","url":"https://github.com/apache/avro/pull/1357"},{"type":"PACKAGE","url":"https://github.com/apache/avro"},{"type":"WEB","url":"https://issues.apache.org/jira/browse/AVRO-3225"},{"type":"WEB","url":"https://issues.apache.org/jira/browse/AVRO-3226"}],"provenance":{"sources":["OSV.dev","FIRST.org (EPSS)"],"lastVerified":"2026-07-09T05:44:22.468963Z"}}