{"id":"AZL-7124","summary":"CVE-2021-45960 affecting package expat for versions less than 2.4.3-1","details":"In Expat (aka libexpat) before 2.4.3, a left shift by 29 (or more) places in the storeAtts function in xmlparse.c can lead to realloc misbehavior (e.g., allocating too few bytes, or only freeing memory).","modified":"2026-04-01T05:22:01.879788Z","published":"2022-01-01T19:15:08Z","upstream":["CVE-2021-45960"],"references":[{"type":"WEB","url":"https://nvd.nist.gov/vuln/detail/CVE-2021-45960"}],"affected":[{"package":{"name":"expat","ecosystem":"Azure Linux:2","purl":"pkg:rpm/azure-linux/expat"},"ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"},{"fixed":"2.4.3-1"}]}],"database_specific":{"source":"https://github.com/microsoft/AzureLinuxVulnerabilityData/blob/main/osv/AZL-7124.json"}}],"schema_version":"1.7.5","severity":[{"type":"CVSS_V3","score":"CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H"}]}