{"dataType":"CVE_RECORD","dataVersion":"5.2","cveMetadata":{"cveId":"CVE-2026-86413","assignerOrgId":"2499f714-1537-4658-8207-48ae4bb9eae9","state":"PUBLISHED","assignerShortName":"curl","dateReserved":"2026-09-07T12:11:52.093Z","datePublished":"2026-10-20T20:06:11.699Z","dateUpdated":"2026-10-20T20:06:11.699Z"},"containers":{"cna":{"title":"Negotiate credentials sent to redirected origin","descriptions":[{"lang":"en","value":"When using an *ambient user* in a first transfer doing Negotiate\nauthentication and asked to follow redirects, curl could pass on its\ncredential details to an unrelated second origin when asked to redirect there."}],"providerMetadata":{"orgId":"2499f714-1537-4658-8207-48ae4bb9eae9","shortName":"curl","dateUpdated":"2026-10-20T20:06:11.699Z"},"problemTypes":[{"descriptions":[{"lang":"en","description":"CWE-201 Information Exposure Through Sent Data"}]}],"affected":[{"vendor":"curl","product":"curl","versions":[{"version":"8.22.0","status":"affected","lessThanOrEqual":"8.22.0","versionType":"semver"},{"version":"8.21.0","status":"affected","lessThanOrEqual":"8.21.0","versionType":"semver"}],"defaultStatus":"unaffected"}],"references":[{"url":"https://curl.se/docs/CVE-2026-86413.json","name":"json"},{"url":"https://curl.se/docs/CVE-2026-86413.html","name":"www"},{"url":"https://hackerone.com/reports/3993549","name":"issue"}],"credits":[{"lang":"en","value":"Stanislav Fort (Aisle Research)","type":"finder"},{"lang":"en","value":"Stefan Eissing","type":"remediation developer"}]}}}