{"attribution":"This product uses data from the NVD API but is not endorsed or certified by the NVD.","cve":{"id":"CVE-2026-1858","sourceIdentifier":"vulnreport@tenable.com","published":"2026-04-29T21:16:20.513","lastModified":"2026-10-26T20:10:00.160","vulnStatus":"Analyzed","cveTags":[],"descriptions":[{"lang":"en","value":"wget2 accepts a server certificate with incorrect Key Usage (KU) or Extended Key Usage (EKU). If the attackers compromise a certificate (with the associated private key) issued for a different purpose, they may be able to reuse it for TLS server authentication."},{"lang":"es","value":"wget2 acepta un certificado de servidor con uso de clave (KU) incorrecto o uso de clave extendido (EKU). Si los atacantes comprometen un certificado (con la clave privada asociada) emitido para un propósito diferente, podrían reutilizarlo para autenticación de servidor TLS."}],"affected":[{"source":"vulnreport@tenable.com","affectedData":[{"vendor":"gnu","product":"wget2","defaultStatus":"unaffected","versions":[{"version":"0","lessThanOrEqual":"2.2.1","versionType":"semver","status":"affected"}]}]}],"metrics":{"cvssMetricV31":[{"source":"vulnreport@tenable.com","type":"Secondary","cvssData":{"version":"3.1","vectorString":"CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:L/I:L/A:N","baseScore":4.8,"baseSeverity":"MEDIUM","attackVector":"NETWORK","attackComplexity":"HIGH","privilegesRequired":"NONE","userInteraction":"NONE","scope":"UNCHANGED","confidentialityImpact":"LOW","integrityImpact":"LOW","availabilityImpact":"NONE"},"exploitabilityScore":2.2,"impactScore":2.5}],"ssvcV203":[{"source":"134c704f-9b21-4f2e-91b3-4a467353bcc0","ssvcData":{"timestamp":"2026-04-30T13:16:18.594329Z","id":"CVE-2026-1858","options":[{"exploitation":"none"},{"automatable":"no"},{"technicalImpact":"partial"}],"role":"CISA Coordinator","version":"2.0.3"}}]},"weaknesses":[{"source":"vulnreport@tenable.com","type":"Secondary","description":[{"lang":"en","value":"CWE-20"}]}],"configurations":[{"nodes":[{"operator":"OR","negate":false,"cpeMatch":[{"vulnerable":true,"criteria":"cpe:2.3:a:gnu:wget2:*:*:*:*:*:*:*:*","versionEndIncluding":"2.2.1","matchCriteriaId":"7059A7C4-12BD-4BA5-B6A7-642161B8DDA2"}]}]}],"references":[{"url":"https://www.tenable.com/security/research/tra-2026-37","source":"vulnreport@tenable.com","tags":["Exploit","Third Party Advisory"]}]}}