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4 vulnerabilities found for kiota-typescript by microsoft
CVE-2026-49336 (GCVE-0-2026-49336)
Vulnerability from nvd – Published: 2026-06-19 18:19 – Updated: 2026-06-22 15:05
VLAI
Title
@microsoft/kiota-http-fetchlibrary: Bearer token and Cookie leak across origin on redirect due to case-mismatched scrub in fetchRequestAdapter
Summary
@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.
Severity
SSVC
Exploitation: poc
Automatable: yes
Technical Impact: partial
CISA Coordinator (v2.0.3)
CWE
Assigner
References
2 references
| URL | Tags |
|---|---|
| https://github.com/microsoft/kiota-typescript/sec… | x_refsource_CONFIRM |
| https://github.com/microsoft/kiota-typescript/com… | x_refsource_MISC |
Impacted products
1 product
| Vendor | Product | Version | |
|---|---|---|---|
| microsoft | kiota-typescript |
Affected:
>= 1.0.0-preview.97, < 1.0.0-preview.102
|
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CVE-2026-44503 (GCVE-0-2026-44503)
Vulnerability from nvd – Published: 2026-05-14 15:58 – Updated: 2026-05-14 19:51
VLAI
Title
Kiota abstractions RedirectHandler leaks Cookie/Proxy-Authorization headers on cross-host redirect
Summary
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.
Severity
SSVC
Exploitation: poc
Automatable: no
Technical Impact: partial
CISA Coordinator (v2.0.3)
CWE
- CWE-601 - URL Redirection to Untrusted Site ('Open Redirect')
Assigner
References
1 reference
| URL | Tags |
|---|---|
| https://github.com/microsoft/kiota-java/security/… | x_refsource_CONFIRM |
Impacted products
6 products
| Vendor | Product | Version | |
|---|---|---|---|
| microsoft | kiota-java |
Affected:
< 1.9.1
|
|
| microsoft | Microsoft.Kiota.Abstractions |
Affected:
< 1.22.0
|
|
| microsoft | github.com/microsoft/kiota-http-go |
Affected:
< 1.5.5
|
|
| microsoft | kiota-typescript |
Affected:
< 1.0.0-preview.100
|
|
| microsoft | microsoft-kiota-abstractions |
Affected:
< 1.9.1
|
|
| microsoft | microsoft-kiota-http |
Affected:
< 1.9.9
|
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CVE-2026-49336 (GCVE-0-2026-49336)
Vulnerability from cvelistv5 – Published: 2026-06-19 18:19 – Updated: 2026-06-22 15:05
VLAI
Title
@microsoft/kiota-http-fetchlibrary: Bearer token and Cookie leak across origin on redirect due to case-mismatched scrub in fetchRequestAdapter
Summary
@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.
Severity
SSVC
Exploitation: poc
Automatable: yes
Technical Impact: partial
CISA Coordinator (v2.0.3)
CWE
Assigner
References
2 references
| URL | Tags |
|---|---|
| https://github.com/microsoft/kiota-typescript/sec… | x_refsource_CONFIRM |
| https://github.com/microsoft/kiota-typescript/com… | x_refsource_MISC |
Impacted products
1 product
| Vendor | Product | Version | |
|---|---|---|---|
| microsoft | kiota-typescript |
Affected:
>= 1.0.0-preview.97, < 1.0.0-preview.102
|
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CVE-2026-44503 (GCVE-0-2026-44503)
Vulnerability from cvelistv5 – Published: 2026-05-14 15:58 – Updated: 2026-05-14 19:51
VLAI
Title
Kiota abstractions RedirectHandler leaks Cookie/Proxy-Authorization headers on cross-host redirect
Summary
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.
Severity
SSVC
Exploitation: poc
Automatable: no
Technical Impact: partial
CISA Coordinator (v2.0.3)
CWE
- CWE-601 - URL Redirection to Untrusted Site ('Open Redirect')
Assigner
References
1 reference
| URL | Tags |
|---|---|
| https://github.com/microsoft/kiota-java/security/… | x_refsource_CONFIRM |
Impacted products
6 products
| Vendor | Product | Version | |
|---|---|---|---|
| microsoft | kiota-java |
Affected:
< 1.9.1
|
|
| microsoft | Microsoft.Kiota.Abstractions |
Affected:
< 1.22.0
|
|
| microsoft | github.com/microsoft/kiota-http-go |
Affected:
< 1.5.5
|
|
| microsoft | kiota-typescript |
Affected:
< 1.0.0-preview.100
|
|
| microsoft | microsoft-kiota-abstractions |
Affected:
< 1.9.1
|
|
| microsoft | microsoft-kiota-http |
Affected:
< 1.9.9
|
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{
"lang": "en",
"value": "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."
}
],
"metrics": [
{
"cvssV4_0": {
"attackComplexity": "LOW",
"attackRequirements": "PRESENT",
"attackVector": "NETWORK",
"baseScore": 7,
"baseSeverity": "HIGH",
"privilegesRequired": "NONE",
"subAvailabilityImpact": "NONE",
"subConfidentialityImpact": "HIGH",
"subIntegrityImpact": "NONE",
"userInteraction": "PASSIVE",
"vectorString": "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",
"version": "4.0",
"vulnAvailabilityImpact": "NONE",
"vulnConfidentialityImpact": "HIGH",
"vulnIntegrityImpact": "NONE"
}
}
],
"problemTypes": [
{
"descriptions": [
{
"cweId": "CWE-601",
"description": "CWE-601: URL Redirection to Untrusted Site (\u0027Open Redirect\u0027)",
"lang": "en",
"type": "CWE"
}
]
}
],
"providerMetadata": {
"dateUpdated": "2026-05-14T15:58:57.772Z",
"orgId": "a0819718-46f1-4df5-94e2-005712e83aaa",
"shortName": "GitHub_M"
},
"references": [
{
"name": "https://github.com/microsoft/kiota-java/security/advisories/GHSA-7j59-v9qr-6fq9",
"tags": [
"x_refsource_CONFIRM"
],
"url": "https://github.com/microsoft/kiota-java/security/advisories/GHSA-7j59-v9qr-6fq9"
}
],
"source": {
"advisory": "GHSA-7j59-v9qr-6fq9",
"discovery": "UNKNOWN"
},
"title": "Kiota abstractions RedirectHandler leaks Cookie/Proxy-Authorization headers on cross-host redirect"
}
},
"cveMetadata": {
"assignerOrgId": "a0819718-46f1-4df5-94e2-005712e83aaa",
"assignerShortName": "GitHub_M",
"cveId": "CVE-2026-44503",
"datePublished": "2026-05-14T15:58:57.772Z",
"dateReserved": "2026-05-06T18:28:20.886Z",
"dateUpdated": "2026-05-14T19:51:10.682Z",
"state": "PUBLISHED"
},
"dataType": "CVE_RECORD",
"dataVersion": "5.2"
}