Home/CVE/The RedirectHandler middleware in microsoft/kiota-java (com.microsoft.kiota:microsoft-kiota-http-okHttp v1.9.0) and othe
CVE

CVE-2026-44503

The RedirectHandler middleware in microsoft/kiota-java (com.microsoft.kiota:microsoft-kiota-http-okHttp v1.9.0) and othe

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.

EPSS 0.00079
Monitor
  • No active-exploitation, high-EPSS, or public-exploit signals - routine patching cadence
Sigma rules0 YARA rules0
⬡

Weakness Classification

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

Affected Packages

5
Language-ecosystem packages (from OSV) tied to this CVE, with the version that fixes it - the dependency-level detail NVD doesn’t carry.
Go github.com/microsoft/kiota-http-go HIGH fixed in 1.5.5
Maven com.microsoft.kiota:microsoft-kiota-abstractions HIGH fixed in 1.9.1
NuGet Microsoft.Kiota.Abstractions HIGH fixed in 1.22.0
PyPI microsoft-kiota-http HIGH fixed in 1.9.9
npm kiota-typescript HIGH fixed in 1.0.0-preview.100
▣

Scoring & Timeline

Published to NVD14 May 2026 · 04:16 PM
SSVC triage · cisa-vulnrichment
Exploitation
poc
Automatable
no
Technical impact
partial
SSVC asks the questions that actually drive patch urgency: is it being exploited, can attacks be automated, and how total is the impact.
🔗

References & Sources

1
Source URLs (vendor pages, mailing lists, write-ups). Exploit/PoC links are in their own section above to avoid duplication.
https://github.com/microsoft/kiota-java/security/advisories/GHSA-7j59-v9qr-6fq9
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