high7.0
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 sensit…
Impact
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.
Affected packages
| Ecosystem | Package | Affected | Fixed in |
|---|---|---|---|
| maven | com.microsoft.kiota:microsoft-kiota-abstractions | < 1.9.1 | 1.9.1 |
| nuget | Microsoft.Kiota.Abstractions | < 1.22.0 | 1.22.0 |
| pip | microsoft-kiota-http | < 1.9.9 | 1.9.9 |
| npm | kiota-typescript | < 1.0.0-preview.100 | 1.0.0-preview.100 |
| go | github.com/microsoft/kiota-http-go | < 1.5.5 | 1.5.5 |
Weakness classification
References
- NVD record
- CVE.org record
- GitHub advisory
- https://github.com/advisories/GHSA-7j59-v9qr-6fq9
- https://github.com/microsoft/kiota-java/security/advisories/GHSA-7j59-v9qr-6fq9
- https://nvd.nist.gov/vuln/detail/CVE-2026-44503
- https://github.com/microsoft/kiota-java
- https://github.com/pypa/advisory-database/tree/main/vulns/microsoft-kiota-http/PYSEC-2026-2647.yaml
- https://pypi.org/project/microsoft-kiota-http