CVE-2026-44503
Kiota abstractions RedirectHandler leaks Cookie/Proxy-Authorization headers on cross-host redirect
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.
CVSS 4.0 · 7 High
EPSS < 1%
KEV · Not listed
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