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CVE-2026-40109

🗓️ 09 Apr 2026 21:06:59Reported by GitHub_MType 
cve
 cve
🔗 web.nvd.nist.gov👁 1 Views🌐 WEB

Flux notification-controller allows unauthorized reconciliations via Google OIDC in gcr webhook.

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Detection
Affected
Refs
Paths
Vulners
[
  {
    "vendor": "fluxcd",
    "product": "notification-controller",
    "versions": [
      {
        "version": "< 1.8.3",
        "status": "affected"
      }
    ]
  }
]
ParameterPositionPathDescriptionCWE
tokenpath/hook/sha256sum(token+name+namespace)Webhook path used for Pub/Sub authentication in Flux notification-controller; vulnerable to authentication bypass via invalid email claim on Google OIDC token before fix.CWE-287CWE-345
namepath/hook/sha256sum(token+name+namespace)Webhook path used for Pub/Sub authentication in Flux notification-controller; vulnerable to authentication bypass via invalid email claim on Google OIDC token before fix.CWE-287CWE-345
namespacepath/hook/sha256sum(token+name+namespace)Webhook path used for Pub/Sub authentication in Flux notification-controller; vulnerable to authentication bypass via invalid email claim on Google OIDC token before fix.CWE-287CWE-345

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16 Apr 2026 14:42Current
5.9Medium risk
Vulners AI Score5.9
CVSS 3.13.1
EPSS0.00018
SSVC
1