{"action":"Upgrade libidn to 1.33-1 or later.","affected":[{"fixed":"1.33-1","introduced":"0"}],"component":"libidn","cve_ids":[],"ecosystem":"Debian","ecosystem_qualifier":"Debian:13","exploited":false,"fixed_versions":["1.33-1"],"id":"tcs_01M5NBP0E0DPTQTC6WE91SVTNR","modified_at":"2026-09-22T07:01:34.346739472Z","published_at":"2016-09-07T20:59:04.263Z","references":["https://osv.dev/vulnerability/DEBIAN-CVE-2016-6261","https://security-tracker.debian.org/tracker/CVE-2016-6261"],"severity":{"label":"high","score":7.5},"sources":[{"source":"osv","source_id":"DEBIAN-CVE-2016-6261#Debian:13/libidn","url":"https://osv.dev/vulnerability/DEBIAN-CVE-2016-6261"}],"summary":"The idna_to_ascii_4i function in lib/idna.c in libidn before 1.33 allows context-dependent attackers to cause a denial of service (out-of-bounds read and crash) via 64 bytes of input."}