{"action":"Upgrade nodejs to 18.20.4+dfsg-1~deb12u2 or later.","affected":[{"fixed":"18.20.4+dfsg-1~deb12u2","introduced":"0"}],"component":"nodejs","cve_ids":[],"ecosystem":"Debian","ecosystem_qualifier":"Debian:12","exploited":false,"fixed_versions":["18.20.4+dfsg-1~deb12u2"],"id":"tcs_01M5NQYXXN0CCXQ459CCR4SDW0","modified_at":"2026-10-01T03:03:20.642398247Z","published_at":"2026-03-30T20:16:19.397Z","references":["https://osv.dev/vulnerability/DEBIAN-CVE-2026-21713","https://security-tracker.debian.org/tracker/CVE-2026-21713"],"severity":{"label":"medium","score":5.9},"sources":[{"source":"osv","source_id":"DEBIAN-CVE-2026-21713","url":"https://osv.dev/vulnerability/DEBIAN-CVE-2026-21713"}],"summary":"A flaw in Node.js HMAC verification uses a non-constant-time comparison when validating user-provided signatures, potentially leaking timing information proportional to the number of matching bytes. U"}