{"cvss":6.2,"datePublished":"2026-08-04T01:16:20.380","dateUpdated":"2026-10-23T23:10:00.157","description":"A flaw in Node.js allows a spoofed `TypedArray` `byteLength` to trigger a reachable assertion in the synchronous `node:zlib` APIs, causing the entire process to crash. All 11 synchronous zlib functions are affected.\r\n\r\nRepeated exploitation of this condition can result in a denial of service.\r\n\r\nThis vulnerability affects Node.js **22.x**, **24.x**, and **26.x**.","id":"CVE-2026-58045","raw":{"affected":[{"affectedData":[{"defaultStatus":"unaffected","product":"node","vendor":"nodejs","versions":[{"lessThanOrEqual":"26.5.0","status":"affected","version":"26.5.0","versionType":"semver"},{"lessThanOrEqual":"24.18.0","status":"affected","version":"24.18.0","versionType":"semver"},{"lessThanOrEqual":"22.23.1","status":"affected","version":"22.23.1","versionType":"semver"}]}],"source":"support@hackerone.com"}],"cveTags":[],"descriptions":[{"lang":"en","value":"A flaw in Node.js allows a spoofed `TypedArray` `byteLength` to trigger a reachable assertion in the synchronous `node:zlib` APIs, causing the entire process to crash. All 11 synchronous zlib functions are affected.\r\n\r\nRepeated exploitation of this condition can result in a denial of service.\r\n\r\nThis vulnerability affects Node.js **22.x**, **24.x**, and **26.x**."},{"lang":"es","value":"Un fallo en Node.js permite que un ’TypedArray’ ’byteLength’ falsificado active una aserción alcanzable en las API síncronas de ’node:zlib’, provocando el bloqueo de todo el proceso. Las 11 funciones síncronas de zlib se ven afectadas.\n\nLa explotación repetida de esta condición puede resultar en una denegación de servicio.\n\nEsta vulnerabilidad afecta a Node.js 22.x, 24.x y 26.x."}],"id":"CVE-2026-58045","lastModified":"2026-10-23T23:10:00.157","metrics":{"cvssMetricV30":[{"cvssData":{"attackComplexity":"LOW","attackVector":"LOCAL","availabilityImpact":"HIGH","baseScore":6.2,"baseSeverity":"MEDIUM","confidentialityImpact":"NONE","integrityImpact":"NONE","privilegesRequired":"NONE","scope":"UNCHANGED","userInteraction":"NONE","vectorString":"CVSS:3.0/AV:L/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H","version":"3.0"},"exploitabilityScore":2.5,"impactScore":3.6,"source":"support@hackerone.com","type":"Secondary"}],"ssvcV203":[{"source":"134c704f-9b21-4f2e-91b3-4a467353bcc0","ssvcData":{"id":"CVE-2026-58045","options":[{"exploitation":"none"},{"automatable":"no"},{"technicalImpact":"partial"}],"role":"CISA Coordinator","timestamp":"2026-08-04T14:19:40.312440Z","version":"2.0.3"}}]},"published":"2026-08-04T01:16:20.380","references":[{"source":"support@hackerone.com","url":"https://nodejs.org/en/blog/vulnerability/july-2026-security-releases"}],"sourceIdentifier":"support@hackerone.com","vulnStatus":"Awaiting Analysis","weaknesses":[{"description":[{"lang":"en","value":"CWE-400"}],"source":"support@hackerone.com","type":"Secondary"}]},"severity":"MEDIUM","source":"nvd","title":"A flaw in Node.js allows a spoofed `TypedArray` `byteLength` to trigger a reachable assertion in the synchronous `nod..."}