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PatchSiren cyber security CVE debrief

CVE-2026-4764 Google Cloud CVE debrief

CVE-2026-4764 is a Critical Missing Authorization vulnerability in Dialogflow CX on Google Cloud Platform. An authenticated user with specific roles can exploit this vulnerability to escalate privileges and potentially take over a GCP project using a maliciously crafted playbook import. The vulnerability was patched on March 15, 2026, and no customer action is required.

Vendor
Google Cloud
Product
Dialogflow CX
CVSS
CRITICAL 9.4
CISA KEV
Not listed in stored evidence
Original CVE published
2026-06-11
Original CVE updated
2026-06-11
Advisory published
2026-06-11
Advisory updated
2026-06-11

Who should care

Users of Dialogflow CX on Google Cloud Platform, especially those with specific roles that could be exploited for privilege escalation.

Technical summary

The vulnerability has a CVSS score of 9.4 and is classified as CRITICAL. It allows an attacker to escalate privileges and potentially take over a GCP project. The vulnerability was patched on March 15, 2026.

Defensive priority

high

Recommended defensive actions

  • Review the patch notes for Dialogflow CX on Google Cloud Platform to ensure the patch has been applied.
  • Monitor user activity and privilege escalation attempts in your GCP projects.
  • Restrict roles and permissions for users who could potentially exploit this vulnerability.

Evidence notes

The vendor is listed as Unknown Vendor, but evidence suggests the vulnerability is related to Google.

Sources and references

Verified primary and authoritative sources

  • CVE-2026-4764 CVE Program record

    Publisher, destination, and source semantics verified

    URL: https://www.cve.org/CVERecord?id=CVE-2026-4764

    CVE Program - Official CVE Program record with source-provided CVE metadata.

  • CVE-2026-4764 NVD vulnerability detail

    Publisher, destination, and source semantics verified

    URL: https://nvd.nist.gov/vuln/detail/CVE-2026-4764

    NIST National Vulnerability Database - Official NIST NVD detail page and source-specific vulnerability assessment.

Supplemental references

  • Source reference

    Unverified legacy reference

    URL: https://docs.cloud.google.com/dialogflow/docs/release-notes

    f45cbf4e-4146-4068-b7e1-655ffc2c548c

Methodology and review provenance

AI-assisted synthesis based on stored public vulnerability evidence. System validation, approval state, and publication status do not by themselves establish human review of this revision. PatchSiren helps prioritize defensive review and does not prove exposure or remediation on any system.