{"action":"Upgrade libevent to 2.1.13-stable-1 or later.","affected":[{"fixed":"2.1.13-stable-1","introduced":"0"}],"component":"libevent","cve_ids":[],"ecosystem":"Debian","ecosystem_qualifier":"Debian:14","exploited":false,"fixed_versions":["2.1.13-stable-1"],"id":"tcs_01M5NT9Y5KVZAQNWBYZXQ8BVTC","modified_at":"2026-10-27T09:47:34.493648140Z","published_at":"2026-08-20T18:16:36.893Z","references":["https://osv.dev/vulnerability/DEBIAN-CVE-2026-63388","https://security-tracker.debian.org/tracker/CVE-2026-63388"],"severity":{"label":"high","score":8.4},"sources":[{"source":"osv","source_id":"DEBIAN-CVE-2026-63388#Debian:14/libevent","url":"https://osv.dev/vulnerability/DEBIAN-CVE-2026-63388"}],"summary":"Libevent is an event notification library. Prior to 2.1.13 and 2.2.2-alpha, libevent has a heap out-of-bounds write in bufferevent_sock.c when bufferevent_socket_set_conn_address_ copies a kernel-supp"}