{"action":"Upgrade libcoap3 to 4.3.5-3 or later.","affected":[{"fixed":"4.3.5-3","introduced":"0"}],"component":"libcoap3","cve_ids":[],"ecosystem":"Debian","ecosystem_qualifier":"Debian:14","exploited":false,"fixed_versions":["4.3.5-3"],"id":"tcs_01M5NRHGVZXMTHGSD647XAWF45","modified_at":"2026-10-01T03:03:09.440944286Z","published_at":"2026-04-17T22:16:31.063Z","references":["https://osv.dev/vulnerability/DEBIAN-CVE-2026-29013","https://security-tracker.debian.org/tracker/CVE-2026-29013"],"severity":{"label":"critical","score":9.8},"sources":[{"source":"osv","source_id":"DEBIAN-CVE-2026-29013#Debian:14/libcoap3","url":"https://osv.dev/vulnerability/DEBIAN-CVE-2026-29013"}],"summary":"libcoap contains out-of-bounds read vulnerabilities in OSCORE Appendix B.2 CBOR unwrap handling where get_byte_inc() in src/oscore/oscore_cbor.c relies solely on assert() for bounds checking, which is"}