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.
History

Fri, 19 Dec 2025 09:30:00 +0000

Type Values Removed Values Added
First Time appeared Google
Google cloud Dialogflow Cx
Vendors & Products Google
Google cloud Dialogflow Cx

Thu, 18 Dec 2025 22:00:00 +0000

Type Values Removed Values Added
Description 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.
Title Authentication Bypass in Dialogflow CX Messenger
Weaknesses CWE-287
References
Metrics cvssV4_0

{'score': 6.9, 'vector': 'CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:L/VI:L/VA:N/SC:L/SI:L/SA:N'}


cve-icon MITRE

Status: PUBLISHED

Assigner: GoogleCloud

Published: 2025-12-18T21:57:55.976Z

Updated: 2025-12-18T21:57:55.976Z

Reserved: 2025-11-19T16:10:49.450Z

Link: CVE-2025-13427

cve-icon Vulnrichment

No data.

cve-icon NVD

Status : Received

Published: 2025-12-18T22:15:55.590

Modified: 2025-12-18T22:15:55.590

Link: CVE-2025-13427

cve-icon Redhat

No data.