CVE-2026-49336— @microsoft/kiota-http-fetchlibrary 因大小写不匹配导致凭证泄露
可能的 ATT&CK 技术 1AI
T1557 · Adversary-in-the-Middle影响版本矩阵 1
| 厂商 | 产品 | 版本范围 | 状态 |
|---|---|---|---|
| microsoft | kiota-typescript | >= 1.0.0-preview.97, < 1.0.0-preview.102 | affected |
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一、 漏洞 CVE-2026-49336 基础信息
漏洞信息
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Vulnerability Title
@microsoft/kiota-http-fetchlibrary: Bearer token and Cookie leak across origin on redirect due to case-mismatched scrub in fetchRequestAdapter
来源: 美国国家漏洞数据库 NVD
Vulnerability 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.
来源: 美国国家漏洞数据库 NVD
CVSS Information
N/A
来源: 美国国家漏洞数据库 NVD
Vulnerability Type
大小写敏感处理不恰当
来源: 美国国家漏洞数据库 NVD
受影响产品
| 厂商 | 产品 | 影响版本 | CPE | 订阅 |
|---|---|---|---|---|
| microsoft | kiota-typescript | >= 1.0.0-preview.97, < 1.0.0-preview.102 | - |
二、漏洞 CVE-2026-49336 的公开POC
| # | POC 描述 | 源链接 | 神龙链接 |
|---|
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CVE-2026-49336 补丁与修复 (1)
CVE-2026-49336 厂商安全公告 (1)
同批安全公告 · microsoft · 2026-06-19 · 共 8 条
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IV. Related Vulnerabilities
V. Comments for CVE-2026-49336
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