{"action":"Upgrade isync to 1.4.1-r0 or later.","affected":[{"fixed":"1.4.1-r0","introduced":"0"}],"component":"isync","cve_ids":[],"ecosystem":"Alpine","ecosystem_qualifier":"Alpine:v3.21","exploited":false,"fixed_versions":["1.4.1-r0"],"id":"tcs_01M6GN5GAR8RFA2Z3XBBKBSP6H","modified_at":"2026-11-03T06:32:26.888366436Z","published_at":"2021-02-23T19:15:13.510Z","references":["https://osv.dev/vulnerability/ALPINE-CVE-2021-20247","https://security.alpinelinux.org/vuln/CVE-2021-20247"],"severity":{"label":"high","score":7.4},"sources":[{"source":"osv","source_id":"ALPINE-CVE-2021-20247#Alpine:v3.21/isync","url":"https://osv.dev/vulnerability/ALPINE-CVE-2021-20247"}],"summary":"A flaw was found in mbsync before v1.3.5 and v1.4.1. Validations of the mailbox names returned by IMAP LIST/LSUB do not occur allowing a malicious or compromised server to use specially crafted mailbo"}