CVE-2026-4764Network attack vector

Project takeover via unauthorized playbook import

Published Jun 11, 2026 · Updated Jun 11, 2026

Missing authorization in Google Dialogflow CX before 15 March 2026 allows remote authenticated users to gain project-level privileges. The playbook import handler accepts a maliciously crafted playbook, but Google has not disclosed the omitted authorization check or privileged resource affected during import. Exploitation requires an authenticated principal with specific Dialogflow roles and can permit control of the surrounding Google Cloud project.

CVSS severity9.4
Critical
EPSS probability0.21%
Next 30 days · Sep 16, 2026
Known exploitationUnconfirmed
Based on sourced intelligence
Hinoki checkNot available
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Summary

What happened

Missing authorization in Google Dialogflow CX before 15 March 2026 allows remote authenticated users to gain project-level privileges. The playbook import handler accepts a maliciously crafted playbook, but Google has not disclosed the omitted authorization check or privileged resource affected during import. Exploitation requires an authenticated principal with specific Dialogflow roles and can permit control of the surrounding Google Cloud project.

The record

CVE
CVE-2026-4764
Published
Jun 11, 2026
Updated
Jun 11, 2026
Vendor
Go standard library
Product
Dialogflow CX
Classifications
CWE-862, T1068
Attack vector
network
Privileges
authenticated

Timeline

How it unfolded

  1. Jun 11, 2026CVE publishedPublication date reported by the CVE source.
  2. Jun 11, 2026Record updatedLatest update available in the CVE record.

Exploitability

Present is not the same as exploitable

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Is a vulnerable build present?

Compare these published version ranges with your installed build and any vendor patches.

  1. Affected versionversion=0 <2026-03-15

What conditions does exploitation require?

Attack vectornetwork
Required privilegesauthenticated

What is affected?

Go standard library · Dialogflow CXversion=0 <2026-03-15

Published CVSS scores

9.4Google CloudCVSS:4.0/AV:N/AC:L/AT:N/PR:L/UI:N/VC:H/VI:H/VA:H/SC:H/SI:H/SA:H

CVSS describes severity. EPSS estimates exploitation probability.

Attacks

What attackers are doing with it

Daily unique IPs observed by Shadowserver honeypots for known exploited vulnerabilities (KEVs). Missing observations do not establish an absence of attacks.

Daily unique IPsNo honeypot observations are available for this CVE in the selected window.

No observations available

Sep 9, 2026Sep 15, 2026
Latest reporting daySep 15, 2026
Latest daily unique IPsUnavailable
Prior 30-day averageUnavailable
SourceShadowserver honeypots (KEV)
Vectornetwork
Privilegesauthenticated
Known exploitationUnconfirmed
Public exploitUnconfirmed

Weakness, pattern, technique

CWE-862Missing Authorization
T1068Exploitation for Privilege Escalation

Public exploit references

No public exploit references are available in this record.

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Technologies

Your stack

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Your stack

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