Open Redirect Affecting @microsoft/kiota-http-fetchlibrary package, versions <1.0.0-preview.100
Threat Intelligence
Snyk has a proof-of-concept or detailed explanation of how to exploit this vulnerability.
The probability is the direct output of the EPSS model, and conveys an overall sense of the threat of exploitation in the wild. The percentile measures the EPSS probability relative to all known EPSS scores. Note: This data is updated daily, relying on the latest available EPSS model version. Check out the EPSS documentation for more details.
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Test your applications- Snyk IDSNYK-JS-MICROSOFTKIOTAHTTPFETCHLIBRARY-16699852
- published15 May 2026
- disclosed7 May 2026
- creditMichael Mainer
Introduced: 7 May 2026
CVE-2026-44503 (opens in a new tab)How to fix?
Upgrade @microsoft/kiota-http-fetchlibrary to version 1.0.0-preview.100 or higher.
Overview
@microsoft/kiota-http-fetchlibrary is an implementation using the Fetch API to make requests.
Affected versions of this package are vulnerable to Open Redirect in the RedirectHandler function. An attacker can obtain sensitive information such as session cookies, proxy credentials, and API keys by inducing a cross-host or cross-scheme redirect, causing these headers to be forwarded to an attacker-controlled server.