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CVE-2026-27124

🗓️ 03 Apr 2026 15:22:17Reported by GitHub_MType 
cve
 cve
🔗 web.nvd.nist.gov👁 63 Views

Missing consent verification in OAuth proxy callback enables Confused Deputy; fixed in FastMCP 3.2.0.

Related
Detection
Affected
Refs
ReporterTitlePublishedViews
Family
attackerkb
ATTACKERKB
CVE-2026-27124
3 Apr 202615:22
attackerkb
cgr
Chainguard
CVE-2026-27124 vulnerabilities
18 Jul 202614:17
cgr
circl
Circl
CVE-2026-27124
3 Apr 202616:05
circl
cnnvd
CNNVD
FastMCP 安全漏洞
3 Apr 202600:00
cnnvd
cvelist
Cvelist
CVE-2026-27124 FastMCP: Missing Consent Verification in OAuth Proxy Callback Facilitates Confused Deputy Vulnerabilities
3 Apr 202615:22
cvelist
github
Github Security Blog
FastMCP: Missing Consent Verification in OAuth Proxy Callback Facilitates Confused Deputy Vulnerabilities
31 Mar 202622:32
github
nvd
NVD
CVE-2026-27124
3 Apr 202616:16
nvd
osv
OSV
CGA-5Q86-M9JF-Q7RW
18 Jul 202613:09
osv
osv
OSV
CGA-RXFQ-P97R-JVX7
16 Jun 202617:47
osv
osv
OSV
CGA-V46R-GRCM-426Q
16 Jun 202618:15
osv
Rows per page
NVD
Vulners
Node
jlowinfastmcpRange<3.2.0
[
  {
    "vendor": "jlowin",
    "product": "fastmcp",
    "versions": [
      {
        "version": "< 3.2.0",
        "status": "affected"
      }
    ]
  }
]

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24 Jul 2026 22:10Current
5.9Medium risk
Vulners AI Score5.9
CVSS 3.16.1
CVSS 48.2
EPSS0.00207
SSVC
63