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: 2026-05-14
Score: 7 High
EPSS: < 1% Very Low
KEV: No
Impact: n/a
Action: n/a
AI Analysis

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Remediation

No vendor fix or workaround currently provided.

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Tracking

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Advisories
Source ID Title
Github GHSA Github GHSA GHSA-7j59-v9qr-6fq9 Kiota abstractions RedirectHandler leaks Cookie/Proxy-Authorization headers on cross-host redirect
History

Sun, 17 May 2026 20:30:00 +0000

Type Values Removed Values Added
First Time appeared Microsoft
Microsoft kiota-abstractions
Microsoft kiota-http
Microsoft kiota-http-go
Microsoft kiota-java
Microsoft kiota-typescript
Microsoft microsoft.kiota.abstractions
Vendors & Products Microsoft
Microsoft kiota-abstractions
Microsoft kiota-http
Microsoft kiota-http-go
Microsoft kiota-java
Microsoft kiota-typescript
Microsoft microsoft.kiota.abstractions

Thu, 14 May 2026 21:30:00 +0000

Type Values Removed Values Added
Metrics ssvc

{'options': {'Automatable': 'no', 'Exploitation': 'poc', 'Technical Impact': 'partial'}, 'version': '2.0.3'}


Thu, 14 May 2026 16:15:00 +0000

Type Values Removed Values Added
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.
Title Kiota abstractions RedirectHandler leaks Cookie/Proxy-Authorization headers on cross-host redirect
Weaknesses CWE-601
References
Metrics cvssV4_0

{'score': 7, 'vector': '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'}


Subscriptions

Microsoft Kiota-abstractions Kiota-http Kiota-http-go Kiota-java Kiota-typescript Microsoft.kiota.abstractions
cve-icon MITRE

Status: PUBLISHED

Assigner: GitHub_M

Published:

Updated: 2026-05-14T19:51:10.682Z

Reserved: 2026-05-06T18:28:20.886Z

Link: CVE-2026-44503

cve-icon Vulnrichment

Updated: 2026-05-14T18:02:18.424Z

cve-icon NVD

Status : Deferred

Published: 2026-05-14T16:16:24.223

Modified: 2026-06-17T10:50:44.263

Link: CVE-2026-44503

cve-icon Redhat

No data.

cve-icon OpenCVE Enrichment

Updated: 2026-05-17T19:41:46Z

Weaknesses