{"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_01M5NQYXA48PNE42Z62GA6YHQE","modified_at":"2026-10-01T03:03:08.135217368Z","published_at":"2026-01-20T21:16:05.950Z","references":["https://osv.dev/vulnerability/DEBIAN-CVE-2026-21637","https://security-tracker.debian.org/tracker/CVE-2026-21637"],"severity":{"label":"high","score":7.5},"sources":[{"source":"osv","source_id":"DEBIAN-CVE-2026-21637","url":"https://osv.dev/vulnerability/DEBIAN-CVE-2026-21637"}],"summary":"A flaw in Node.js TLS error handling allows remote attackers to crash or exhaust resources of a TLS server when `pskCallback` or `ALPNCallback` are in use. Synchronous exceptions thrown during these c"}