{"id":"CVE-2026-94265","state":"PUBLISHED","title":"Authorization: Negotiate sent to foreign origin","description":"When processing an HTTP redirect to a URL containing userinfo (a\n`username:password` component), curl might erroneously retain and re-transmit\nthe original host's HTTP Negotiate authentication state. Consequently, a\nmalicious server can trigger a redirect containing arbitrary userinfo to force\ncurl to send a freshly minted Kerberos ticket—generated using the ambient\nidentity of the client process to an untrusted third-party host, effectively\nbypassing the domain-scoping restrictions normally enforced by the absence of\n`--location-trusted`.","publishedAt":"2026-10-20T20:26:18.061Z","updatedAt":"2026-10-30T16:19:18.095Z","severity":{"score":9.1,"label":"Critical","version":"3.1","vector":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:N","source":"CISA-ADP"},"assigner":"curl","products":["curl curl"],"affected":[{"vendor":"curl","product":"curl","defaultStatus":"unaffected","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"}]}],"references":["https://curl.se/docs/CVE-2026-94265.json","https://curl.se/docs/CVE-2026-94265.html","https://hackerone.com/reports/4040551"],"weaknesses":["CWE-200"],"ingestedAt":"2026-10-30T16:28:06.823Z","source":{"repository":"CVEProject/cvelistV5","path":"cves/2026/94xxx/CVE-2026-94265.json","commit":"25ad8a5b2686c03ce519304fa94cee2ab6c5e852","baselineCommit":"556c9d3a8cd17e218bb8e452ba7cd619a384ff47"},"raw":{"dataType":"CVE_RECORD","dataVersion":"5.2","cveMetadata":{"cveId":"CVE-2026-94265","state":"PUBLISHED","datePublished":"2026-10-20T20:26:18.061Z","dateUpdated":"2026-10-30T16:19:18.095Z","assignerShortName":"curl","assignerOrgId":"2499f714-1537-4658-8207-48ae4bb9eae9","dateReserved":"2026-09-21T09:07:44.636Z"},"containers":{"cna":{"title":"Authorization: Negotiate sent to foreign origin","descriptions":[{"lang":"en","value":"When processing an HTTP redirect to a URL containing userinfo (a\n`username:password` component), curl might erroneously retain and re-transmit\nthe original host's HTTP Negotiate authentication state. Consequently, a\nmalicious server can trigger a redirect containing arbitrary userinfo to force\ncurl to send a freshly minted Kerberos ticket—generated using the ambient\nidentity of the client process to an untrusted third-party host, effectively\nbypassing the domain-scoping restrictions normally enforced by the absence of\n`--location-trusted`."}],"affected":[{"vendor":"curl","product":"curl","defaultStatus":"unaffected","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"}]}],"references":[{"url":"https://curl.se/docs/CVE-2026-94265.json","name":"json"},{"url":"https://curl.se/docs/CVE-2026-94265.html","name":"www"},{"url":"https://hackerone.com/reports/4040551","name":"issue"}],"problemTypes":[{"descriptions":[{"lang":"en","description":"CWE-200 Exposure of Sensitive Information to an Unauthorized Actor"}]}],"providerMetadata":{"shortName":"curl","orgId":"2499f714-1537-4658-8207-48ae4bb9eae9","dateUpdated":"2026-10-20T20:26:18.061Z"},"credits":[{"lang":"en","value":"Joshua Rogers (Aisle Research)","type":"finder"},{"lang":"en","value":"Joshua Rogers (Aisle Research)","type":"remediation developer"}]},"adp":[{"title":"CISA ADP Vulnrichment","references":[{"url":"https://hackerone.com/reports/4040551","tags":["exploit"]}],"metrics":[{"cvssV3_1":{"scope":"UNCHANGED","version":"3.1","baseScore":9.1,"attackVector":"NETWORK","baseSeverity":"CRITICAL","vectorString":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:N","integrityImpact":"HIGH","userInteraction":"NONE","attackComplexity":"LOW","availabilityImpact":"NONE","privilegesRequired":"NONE","confidentialityImpact":"HIGH"}},{"other":{"type":"ssvc","content":{"timestamp":"2026-10-30T16:18:54.642885Z","id":"CVE-2026-94265","options":[{"Exploitation":"poc"},{"Automatable":"yes"},{"Technical Impact":"total"}],"role":"CISA Coordinator","version":"2.0.3"}}}],"problemTypes":[{"descriptions":[{"cweId":"CWE-200","type":"CWE","lang":"en","description":"CWE-200 Exposure of Sensitive Information to an Unauthorized Actor"}]}],"providerMetadata":{"shortName":"CISA-ADP","orgId":"134c704f-9b21-4f2e-91b3-4a467353bcc0","dateUpdated":"2026-10-30T16:19:18.095Z"}}]}}}