{"action":"Upgrade libtasn1 to 4.21.0-r0 or later.","affected":[{"fixed":"4.21.0-r0","introduced":"0"}],"component":"libtasn1","cve_ids":[],"ecosystem":"Alpine","ecosystem_qualifier":"Alpine:v3.23","exploited":false,"fixed_versions":["4.21.0-r0"],"id":"tcs_01M5NF8V6DXBPMRFFTJEE7MNNY","modified_at":"2026-08-27T22:18:02.771002803Z","published_at":"2026-01-07T22:15:43.200Z","references":["https://osv.dev/vulnerability/ALPINE-CVE-2025-13151","https://security.alpinelinux.org/vuln/CVE-2025-13151"],"severity":{"label":"high","score":7.5},"sources":[{"source":"osv","source_id":"ALPINE-CVE-2025-13151#Alpine:v3.23/libtasn1","url":"https://osv.dev/vulnerability/ALPINE-CVE-2025-13151"}],"summary":"Stack-based buffer overflow in libtasn1 version: v4.20.0. The function fails to validate the size of input data resulting in a buffer overflow in asn1_expend_octet_string."}