{"attribution":"This product uses data from the NVD API but is not endorsed or certified by the NVD.","cve":{"id":"CVE-2026-21712","sourceIdentifier":"support@hackerone.com","published":"2026-03-30T16:16:03.510","lastModified":"2026-08-19T14:05:23.400","vulnStatus":"Analyzed","cveTags":[],"descriptions":[{"lang":"en","value":"A flaw in Node.js URL processing causes an assertion failure in native code when `url.format()` is called with a malformed internationalized domain name (IDN) containing invalid characters, crashing the Node.js process."},{"lang":"es","value":"Una falla en el procesamiento de URL de Node.js causa una falla de aserción en código nativo cuando se llama a 'url.format()' con un nombre de dominio internacionalizado (IDN) malformado que contiene caracteres no válidos, colapsando el proceso de Node.js."}],"affected":[{"source":"support@hackerone.com","affectedData":[{"vendor":"nodejs","product":"node","defaultStatus":"unaffected","versions":[{"version":"24.14.0","lessThanOrEqual":"24.14.0","versionType":"semver","status":"affected"},{"version":"25.8.1","lessThanOrEqual":"25.8.1","versionType":"semver","status":"affected"}]}]}],"metrics":{"cvssMetricV31":[{"source":"nvd@nist.gov","type":"Primary","cvssData":{"version":"3.1","vectorString":"CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:N/I:N/A:H","baseScore":6.5,"baseSeverity":"MEDIUM","attackVector":"NETWORK","attackComplexity":"LOW","privilegesRequired":"NONE","userInteraction":"REQUIRED","scope":"UNCHANGED","confidentialityImpact":"NONE","integrityImpact":"NONE","availabilityImpact":"HIGH"},"exploitabilityScore":2.8,"impactScore":3.6}],"cvssMetricV30":[{"source":"support@hackerone.com","type":"Secondary","cvssData":{"version":"3.0","vectorString":"CVSS:3.0/AV:N/AC:L/PR:L/UI:R/S:U/C:N/I:N/A:H","baseScore":5.7,"baseSeverity":"MEDIUM","attackVector":"NETWORK","attackComplexity":"LOW","privilegesRequired":"LOW","userInteraction":"REQUIRED","scope":"UNCHANGED","confidentialityImpact":"NONE","integrityImpact":"NONE","availabilityImpact":"HIGH"},"exploitabilityScore":2.1,"impactScore":3.6}],"ssvcV203":[{"source":"134c704f-9b21-4f2e-91b3-4a467353bcc0","ssvcData":{"timestamp":"2026-03-30T15:52:17.619170Z","id":"CVE-2026-21712","options":[{"exploitation":"none"},{"automatable":"no"},{"technicalImpact":"partial"}],"role":"CISA Coordinator","version":"2.0.3"}}]},"weaknesses":[{"source":"134c704f-9b21-4f2e-91b3-4a467353bcc0","type":"Secondary","description":[{"lang":"en","value":"CWE-20"}]}],"configurations":[{"nodes":[{"operator":"OR","negate":false,"cpeMatch":[{"vulnerable":true,"criteria":"cpe:2.3:a:nodejs:node.js:*:*:*:*:-:*:*:*","versionStartIncluding":"24.0.0","versionEndIncluding":"24.14.0","matchCriteriaId":"DD9D3210-E42B-4584-817D-DAC5F1234234"},{"vulnerable":true,"criteria":"cpe:2.3:a:nodejs:node.js:*:*:*:*:-:*:*:*","versionStartIncluding":"25.0.0","versionEndIncluding":"25.8.1","matchCriteriaId":"89D03065-041A-4A59-95C4-B2AE7EE36439"}]}]}],"references":[{"url":"https://hackerone.com/reports/3546390","source":"support@hackerone.com","tags":["Issue Tracking","Third Party Advisory"]},{"url":"https://nodejs.org/en/blog/vulnerability/march-2026-security-releases","source":"support@hackerone.com","tags":["Vendor Advisory"]}]}}