{"action":"Upgrade nss to 3.55-r0 or later.","affected":[{"fixed":"3.55-r0","introduced":"0"}],"component":"nss","cve_ids":[],"ecosystem":"Alpine","ecosystem_qualifier":"Alpine:v3.12","exploited":false,"fixed_versions":["3.55-r0"],"id":"tcs_01M5NC3X3DAKKYTKF9WSAAC55D","modified_at":"2026-10-26T11:17:55.104051353Z","published_at":"2021-05-27T19:15:07.953Z","references":["https://osv.dev/vulnerability/ALPINE-CVE-2020-12403","https://security.alpinelinux.org/vuln/CVE-2020-12403"],"severity":{"label":"critical","score":9.1},"sources":[{"source":"osv","source_id":"ALPINE-CVE-2020-12403","url":"https://osv.dev/vulnerability/ALPINE-CVE-2020-12403"}],"summary":"A flaw was found in the way CHACHA20-POLY1305 was implemented in NSS in versions before 3.55. When using multi-part Chacha20, it could cause out-of-bounds reads. This issue was fixed by explicitly dis"}