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    CVE-2026-44503

    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.

    Published:May 14, 2026
    Last Modified:May 17, 2026
    EPS:May 14, 2026
    EPSS Score:0.00061
    CVSS Score:7

    Affected Products

    Vendor
    Microsoft
    Product
    Kiota-abstractions
    Vendor
    Microsoft
    Product
    Kiota-http
    Vendor
    Microsoft
    Product
    Kiota-http-go
    Vendor
    Microsoft
    Product
    Kiota-java
    Vendor
    Microsoft
    Product
    Kiota-typescript
    Vendor
    Microsoft
    Product
    Microsoft.kiota.abstractions

    Exploits

    No exploit reference

    Common Attack Pattern Enumeration and Classification (CAPEC)

    CAPEC-178 Cross-Site Flashing

    Common Vulnerability Scoring System

    Attack Vector
    Network
    Adjacent
    Local
    Physical
    Privileges Required
    None
    Low
    High
    User Interaction
    None
    Required
    Scope
    Unchanged
    Changed
    Confidentiality
    None
    Low
    High
    Integrity
    None
    Low
    High
    Availability
    None
    Low
    High