{"id":"CVE-2026-44503","sourceIdentifier":"security-advisories@github.com","published":"2026-05-14T16:16:24.223","lastModified":"2026-06-17T10:50:44.263","vulnStatus":"Deferred","cveTags":[],"descriptions":[{"lang":"en","value":"The RedirectHandler middleware in microsoft/kiota-java (com.microsoft.kiota:microsoft-kiota-http-okHttp v1.9.0) and other Kiota libraries fails to strip sensitive HTTP headers when following 3xx redirects to a different host or scheme. Only the Authorization header is removed; Cookie, Proxy-Authorization, and all custom headers are forwarded to the redirect target."}],"affected":[{"source":"security-advisories@github.com","affectedData":[{"vendor":"microsoft","product":"kiota-java","versions":[{"version":"< 1.9.1","status":"affected"}]},{"vendor":"microsoft","product":"Microsoft.Kiota.Abstractions","versions":[{"version":"< 1.22.0","status":"affected"}]},{"vendor":"microsoft","product":"github.com/microsoft/kiota-http-go","versions":[{"version":"< 1.5.5","status":"affected"}]},{"vendor":"microsoft","product":"kiota-typescript","versions":[{"version":"< 1.0.0-preview.100","status":"affected"}]},{"vendor":"microsoft","product":"microsoft-kiota-abstractions","versions":[{"version":"< 1.9.1","status":"affected"}]},{"vendor":"microsoft","product":"microsoft-kiota-http","versions":[{"version":"< 1.9.9","status":"affected"}]}]}],"metrics":{"cvssMetricV40":[{"source":"security-advisories@github.com","type":"Secondary","cvssData":{"version":"4.0","vectorString":"CVSS:4.0/AV:N/AC:L/AT:P/PR:N/UI:P/VC:H/VI:N/VA:N/SC:H/SI:N/SA:N/E:X/CR:X/IR:X/AR:X/MAV:X/MAC:X/MAT:X/MPR:X/MUI:X/MVC:X/MVI:X/MVA:X/MSC:X/MSI:X/MSA:X/S:X/AU:X/R:X/V:X/RE:X/U:X","baseScore":7.0,"baseSeverity":"HIGH","attackVector":"NETWORK","attackComplexity":"LOW","attackRequirements":"PRESENT","privilegesRequired":"NONE","userInteraction":"PASSIVE","vulnConfidentialityImpact":"HIGH","vulnIntegrityImpact":"NONE","vulnAvailabilityImpact":"NONE","subConfidentialityImpact":"HIGH","subIntegrityImpact":"NONE","subAvailabilityImpact":"NONE","exploitMaturity":"NOT_DEFINED","confidentialityRequirement":"NOT_DEFINED","integrityRequirement":"NOT_DEFINED","availabilityRequirement":"NOT_DEFINED","modifiedAttackVector":"NOT_DEFINED","modifiedAttackComplexity":"NOT_DEFINED","modifiedAttackRequirements":"NOT_DEFINED","modifiedPrivilegesRequired":"NOT_DEFINED","modifiedUserInteraction":"NOT_DEFINED","modifiedVulnConfidentialityImpact":"NOT_DEFINED","modifiedVulnIntegrityImpact":"NOT_DEFINED","modifiedVulnAvailabilityImpact":"NOT_DEFINED","modifiedSubConfidentialityImpact":"NOT_DEFINED","modifiedSubIntegrityImpact":"NOT_DEFINED","modifiedSubAvailabilityImpact":"NOT_DEFINED","Safety":"NOT_DEFINED","Automatable":"NOT_DEFINED","Recovery":"NOT_DEFINED","valueDensity":"NOT_DEFINED","vulnerabilityResponseEffort":"NOT_DEFINED","providerUrgency":"NOT_DEFINED"}}],"ssvcV203":[{"source":"134c704f-9b21-4f2e-91b3-4a467353bcc0","ssvcData":{"timestamp":"2026-05-14T18:02:08.790490Z","id":"CVE-2026-44503","options":[{"exploitation":"poc"},{"automatable":"no"},{"technicalImpact":"partial"}],"role":"CISA Coordinator","version":"2.0.3"}}]},"weaknesses":[{"source":"security-advisories@github.com","type":"Secondary","description":[{"lang":"en","value":"CWE-601"}]}],"references":[{"url":"https://github.com/microsoft/kiota-java/security/advisories/GHSA-7j59-v9qr-6fq9","source":"security-advisories@github.com"},{"url":"https://github.com/microsoft/kiota-java/security/advisories/GHSA-7j59-v9qr-6fq9","source":"134c704f-9b21-4f2e-91b3-4a467353bcc0"}]}