{"cve":"CVE-2025-59465","nvd":{"published":"2026-01-20T21:16:04.010","modified":"2026-07-15T02:17:30.860","status":"Modified","description":"A malformed `HTTP/2 HEADERS` frame with oversized, invalid `HPACK` data can cause Node.js to crash by triggering an unhandled `TLSSocket` error `ECONNRESET`. Instead of safely closing the connection, the process crashes, enabling a remote denial of service. This primarily affects applications that do not attach explicit error handlers to secure sockets, for example:\n```\nserver.on('secureConnection', socket => {\n  socket.on('error', err => {\n    console.log(err)\n  })\n})\n```","cvss_v4":null,"cvss_v3":{"version":"3.1","vector":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H","score":7.5},"cwes":["CWE-400","CWE-248"],"references":["https://nodejs.org/en/blog/vulnerability/december-2025-security-releases","https://access.redhat.com/errata/RHSA-2026:1842","https://access.redhat.com/errata/RHSA-2026:1843","https://access.redhat.com/errata/RHSA-2026:2420","https://access.redhat.com/errata/RHSA-2026:2421"],"products":["nodejs:node.js"],"source":"nvd","synced_at":"2026-10-19T22:21:16.563232421+00:00"},"epss":{"cve":"CVE-2025-59465","score":0.03962,"percentile":0.90446,"date":"2026-10-31"},"kev":null,"osv":[],"attribution":["This product uses the NVD API but is not endorsed or certified by the NVD.","EPSS scores: FIRST Exploit Prediction Scoring System, https://www.first.org/epss","Known exploited vulnerabilities: CISA Known Exploited Vulnerabilities Catalog, https://www.cisa.gov/known-exploited-vulnerabilities-catalog","Package advisories: OSV (https://osv.dev), from the GitHub Advisory Database, PyPA, Go, RustSec and other ecosystem databases, under CC-BY 4.0 or CC0","CVE records: the CVE Program's CVE List (https://www.cve.org), under its terms of use (https://www.cve.org/Legal/TermsOfUse). CVE is a registered trademark of The MITRE Corporation; this product is not affiliated with the CVE Program."]}