{"action":"Upgrade libcoap3 to 4.3.5-1 or later.","affected":[{"fixed":"4.3.5-1","introduced":"0"}],"component":"libcoap3","cve_ids":[],"ecosystem":"Debian","ecosystem_qualifier":"Debian:14","exploited":false,"fixed_versions":["4.3.5-1"],"id":"tcs_01M5NKENGCQY229FYKZV1C7B67","modified_at":"2026-11-02T12:02:06.299142214Z","published_at":"2024-04-17T19:15:07.623Z","references":["https://osv.dev/vulnerability/DEBIAN-CVE-2024-31031","https://security-tracker.debian.org/tracker/CVE-2024-31031"],"severity":{"label":"high","score":7.5},"sources":[{"source":"osv","source_id":"DEBIAN-CVE-2024-31031#Debian:14/libcoap3","url":"https://osv.dev/vulnerability/DEBIAN-CVE-2024-31031"}],"summary":"An issue in `coap_pdu.c` in libcoap 4.3.4 allows attackers to cause undefined behavior via a sequence of messages leading to unsigned integer overflow."}