CVE-2025-13427
An authentication bypass vulnerability in Google Cloud Dialogflow CX Messenger allowed unauthenticated users to interact with restricted chat agents, gaining access to the agents' knowledge and the ability to trigger their intents, by manipulating initialization parameters or crafting specific API requests. All versions after August 20th, 2025 have been updated to protect from this vulnerability. No user action is required for this.
Published:Dec 18, 2025
Last Modified:Apr 15, 2026
EPS:Dec 18, 2025
EPSS Score:0.00284
CVSS Score:6.9
Affected Products
Vendor
Product
Action
Vendor
Google
Product
Cloud Dialogflow Cx
Google
Cloud Dialogflow Cx
Exploits
No exploit reference
Common Weakness Enumeration
Common Attack Pattern Enumeration and Classification (CAPEC)
Related CVEs
Common Vulnerability Scoring System
Attack Vector
Network
Adjacent
Local
Physical
Privileges Required
None
Low
High
User Interaction
None
Required
Scope
Unchanged
Changed
Confidentiality
None
Low
High
Integrity
None
Low
High
Availability
None
Low
High
