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CVE-2026-44503

🗓️ 14 May 2026 15:58:57Reported by GitHub_MType 
cve
 cve
🔗 web.nvd.nist.gov👁 161 Views🌐 WEB

CVE-2026-44503: RedirectHandler in Kiota abstractions leaks cookies and proxy authorization headers on cross-host redirects.

Related
Detection
Affected
Refs
Paths
ReporterTitlePublishedViews
Family
attackerkb
attackerkb
CVE-2026-44503
14 May 202615:58
–attackerkb
cgr
Chainguard
CVE-2026-44503 vulnerabilities
7 May 202619:18
–cgr
circl
Circl
CVE-2026-44503
30 Apr 202622:11
–circl
cnnvd
CNNVD
Kiota Java Libraries: Input validation error vulnerability
14 May 202600:00
–cnnvd
cvelist
Cvelist
CVE-2026-44503 Kiota abstractions RedirectHandler leaks Cookie/Proxy-Authorization headers on cross-host redirect
14 May 202615:58
–cvelist
euvd
EUVD
EUVD-2026-30323
14 May 202615:58
–euvd
github
Github Security Blog
Kiota abstractions RedirectHandler leaks Cookie/Proxy-Authorization headers on cross-host redirect
7 May 202601:49
–github
mend
Mend
CVE-2026-44503
14 May 202615:58
–mend
nvd
NVD
CVE-2026-44503
14 May 202616:16
–nvd
osv_cga
osv_cga
CGA-2GW9-26V4-3G82
7 May 202612:28
–osv_cga
Rows per page
Vulners
[
  {
    "vendor": "microsoft",
    "product": "kiota-java",
    "versions": [
      {
        "version": "< 1.9.1",
        "status": "affected"
      }
    ]
  },
  {
    "vendor": "microsoft",
    "product": "Microsoft.Kiota.Abstractions",
    "versions": [
      {
        "version": "< 1.22.0",
        "status": "affected"
      }
    ]
  },
  {
    "vendor": "microsoft",
    "product": "github.com/microsoft/kiota-http-go",
    "versions": [
      {
        "version": "< 1.5.5",
        "status": "affected"
      }
    ]
  },
  {
    "vendor": "microsoft",
    "product": "kiota-typescript",
    "versions": [
      {
        "version": "< 1.0.0-preview.100",
        "status": "affected"
      }
    ]
  },
  {
    "vendor": "microsoft",
    "product": "microsoft-kiota-abstractions",
    "versions": [
      {
        "version": "< 1.9.1",
        "status": "affected"
      }
    ]
  },
  {
    "vendor": "microsoft",
    "product": "microsoft-kiota-http",
    "versions": [
      {
        "version": "< 1.9.9",
        "status": "affected"
      }
    ]
  }
]
ParameterPositionPathDescriptionCWE
Cookieheader3xx redirect targetThe RedirectHandler middleware fails to strip sensitive headers (Cookie, Proxy-Authorization, and custom headers) when following 3xx redirects to a different host or scheme.CWE-601
Proxy-Authorizationheader3xx redirect targetThe RedirectHandler middleware fails to strip sensitive headers (Cookie, Proxy-Authorization, and custom headers) when following 3xx redirects to a different host or scheme.CWE-601
custom headersheader3xx redirect targetThe RedirectHandler middleware fails to strip sensitive headers (Cookie, Proxy-Authorization, and custom headers) when following 3xx redirects to a different host or scheme.CWE-601

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26 Oct 2026 14:10Current
6Medium risk
Vulners AI Score6
CVSS 47
EPSS0.00642
SSVC
161