Signal is active with 2 mentions in latest observed window
Recommended action window: Monitor and triage in normal cycle
NVD description
@microsoft/kiota-http-fetchlibrary provides TypeScript libraries for Kiota-generated API clients. In versions 1.0.0-preview.97 through 1.0.0-preview.101, `@microsoft/kiota-http-fetchlibrary`'s `RedirectHandler` is documented as stripping `Authorization` and `Cookie` from cross-origin redirect targets, but the default `scrubSensitiveHeaders` callback in `RedirectHandlerOptions` uses case-sensitive property deletion (`delete headers.Authorization`, `delete headers.Cookie`) on a headers object that `FetchRequestAdapter.getRequestFromRequestInformation` has already lower-cased. The delete therefore targets keys that do not exist, the scrub is a no-op, and any Bearer token or Cookie attached by a kiota-generated SDK is forwarded to an attacker-controlled host across a 30x redirect. This is reachable in the default middleware chain (`MiddlewareFactory.getDefaultMiddlewares`) with no custom configuration, and applies to every kiota-generated TypeScript SDK that uses `BaseBearerTokenAuthenticationProvider` or any other authentication provider that sets the `Authorization` request header. Version 1.0.0-preview.102 patches the issue.
Priority
LOW
Exploitation
NONE
PoC
NONE
Patch
NONE
Momentum
STABLE
| Date | Total | Labels |
|---|
| 2026-06-19 | 1 | Disclosure1 |
| 2026-06-20 | 2 | General2 |
🚨*CVE* CVE-2026-49336 @microsoft/kiota-http-fetchlibrary provides TypeScript libraries for Kiota-generated API clients. In versions 1.0.0-preview.97 through 1.0.0-preview.101, `@microsoft/… https://www.cve.org/CVERecord?id=CVE-2026-49336 ----- Traducción: CVE-2026-49336 @mi… http://infoflow.cloud`
Post summary
The post merely references CVE-2026-49336 without further details about exploitation, patches, or technical specifics.
CVE-2026-49336 @microsoft/kiota-http-fetchlibrary provides TypeScript libraries for Kiota-generated API clients. In versions 1.0.0-preview.97 through 1.0.0-preview.101, `@microsoft/… https://www.cve.org/CVERecord?id=CVE-2026-49336
Post summary
The post notes that CVE-2026-49336 impacts @microsoft/kiota-http-fetchlibrary versions 1.0.0-preview.97 to 1.0.0-preview.101, but provides no further details, patches, or exploit information.
CVE-2026-49336 Sensitive Header Leakage in Microsoft Kiota HTTP Fetch Library Versions 1.0.0-preview.97-101 https://vulmon.com/vulnerabilitydetails?qid=CVE-2026-49336
Post summary
An announcement of CVE-2026-49336, highlighting a sensitive header leakage issue in Microsoft Kiota HTTP Fetch Library preview versions 1.0.0‑preview.97‑101, without any PoC or exploit details.