{"id":"CVE-2025-13427","url":"https://www.cyber-defence.io/tools/cve/CVE-2025-13427","generatedAt":"2026-10-28T06:00:35.522Z","title":"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…","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. \n\nAll versions after August 20th, 2025 have been updated to protect from this vulnerability. No user action is required for this.","published":"2025-12-18T22:15:56.000Z","lastModified":"2026-09-30T16:10:00.000Z","status":"Deferred","sourceIdentifier":"f45cbf4e-4146-4068-b7e1-655ffc2c548c","cvss":{"version":"4.0","score":6.9,"severity":"MEDIUM","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/E:X/CR:X/IR:X/AR:X/MAV:X/MAC:X/MAT:X/MPR:X/MUI:X/MVC:X/M"},"cwe":["CWE-287"],"affected":[],"epss":{"score":0.00472,"percentile":0.40631,"date":"2026-10-27","history":[]},"kev":{"listed":false},"exploits":{"count":0,"verified":false,"firstPublished":null,"source":"Exploit-DB (https://gitlab.com/exploit-database/exploitdb)","entries":[]},"verdict":{"level":"low","text":"Lower severity and a low EPSS score (0.47%). Track it; it rarely justifies an emergency change on its own."},"changes":[],"references":[{"url":"https://docs.cloud.google.com/dialogflow/docs/release-notes#December_11_2025","source":"f45cbf4e-4146-4068-b7e1-655ffc2c548c"}],"sources":{"nvd":"https://nvd.nist.gov/vuln/detail/CVE-2025-13427","epss":"https://www.first.org/epss/","kev":"https://www.cisa.gov/known-exploited-vulnerabilities-catalog","exploitdb":"https://www.exploit-db.com/"},"licence":"CC BY 4.0 — link back to the CVE Explorer if you publish the results; upstream data remains subject to its own terms."}