{"action":"Upgrade expat to 2.4.3-1 or later.","affected":[{"fixed":"2.4.3-1","introduced":"0"}],"component":"expat","cve_ids":[],"ecosystem":"Debian","ecosystem_qualifier":"Debian:14","exploited":false,"fixed_versions":["2.4.3-1"],"id":"tcs_01M5NG330AMCF8A43J2SXYEBDS","modified_at":"2026-10-15T09:47:36.120363525Z","published_at":"2022-01-01T19:15:08.030Z","references":["https://osv.dev/vulnerability/DEBIAN-CVE-2021-45960","https://security-tracker.debian.org/tracker/CVE-2021-45960"],"severity":{"label":"high","score":8.8},"sources":[{"source":"osv","source_id":"DEBIAN-CVE-2021-45960#Debian:14/expat","url":"https://osv.dev/vulnerability/DEBIAN-CVE-2021-45960"}],"summary":"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 memor"}