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.
- CVSS 4.0
- 7.0
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 - EPSS
- 0.6% chance of exploitation in the next 30 days; higher than 46% of CVEs (scores of 2026-10-25)
- CWE
- CWE-601
- Published
- Modified
- Record from
- the NVD, synced
Packages (OSV)
| Advisory | Ecosystem | Package | Affected | Fixed in |
|---|---|---|---|---|
| GHSA-7j59-v9qr-6fq9 | Maven | com.microsoft.kiota:microsoft-kiota-abstractions | <1.9.1 | 1.9.1 |
| GHSA-7j59-v9qr-6fq9 | NuGet | Microsoft.Kiota.Abstractions | <1.22.0 | 1.22.0 |
| GHSA-7j59-v9qr-6fq9 | PyPI | microsoft-kiota-http | <1.9.9 | 1.9.9 |
| GHSA-7j59-v9qr-6fq9 | npm | kiota-typescript | <1.0.0-preview.100 | 1.0.0-preview.100 |
| GHSA-7j59-v9qr-6fq9 | Go | github.com/microsoft/kiota-http-go | <1.5.5 | 1.5.5 |
| GO-2026-5224 | Go | github.com/microsoft/kiota-http-go | <1.5.5 | 1.5.5 |
| PYSEC-2026-2647 | PyPI | microsoft-kiota-http | <1.9.9 | 1.9.9 |