CVE-2025-13427
MediumCVSS 6.9Exploitation Probability (EPSS)
Low risk38th percentile - higher than 38% of all known CVEs
Summary
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.
Risk Assessment
Risk of unauthorized access to confidential chat agent information and manipulation of their actions.
Recommendation
Ensure you are using a version after August 20, 2025; no user action is required.
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Original NVD description (English source)
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.
Vulnerability data from NVD (NIST) · CISA KEV · EPSS

