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Description

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 Reserved 2026-05-06 | Published 2026-05-14 | Updated 2026-05-14 | Assigner GitHub_M




HIGH: 7.0CVSS:4.0/AV:N/AC:L/AT:P/PR:N/UI:P/VC:H/VI:N/VA:N/SC:H/SI:N/SA:N

Problem types

CWE-601: URL Redirection to Untrusted Site ('Open Redirect')

Product status

< 1.9.1
affected

< 1.22.0
affected

< 1.5.5
affected

< 1.0.0-preview.100
affected

< 1.9.1
affected

< 1.9.9
affected

References

github.com/...a-java/security/advisories/GHSA-7j59-v9qr-6fq9 exploit

github.com/...a-java/security/advisories/GHSA-7j59-v9qr-6fq9

cve.org (CVE-2026-44503)

nvd.nist.gov (CVE-2026-44503)

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