CVE-2026-18236: Google-ADK Continuation Forgery
A vulnerability in the Agent Development Kit (ADK) allows for continuation forgery in tool confirmations. An attacker who is able to manipulate or inject events into the session history can execute unauthorized tools by forging a tool confirmation response. This is possible because the framework did not verify if the target tool was registered to the executing agent, did not validate if the tool actually required confirmation, and did not match the confirmation arguments against the original tool call event in the history.
Affected Software
Event History
Frequently Asked Questions
What is the severity of CVE-2026-18236?
CVE-2026-18236 has a severity rating of critical with a CVSS score of 9.3.
What is CVE-2026-18236 about?
CVE-2026-18236 describes a vulnerability in the Google Agent Development Kit (ADK) that allows for continuation forgery in tool confirmations.
How do I fix CVE-2026-18236?
To address CVE-2026-18236, update to the latest version of the Google Agent Development Kit (ADK) that includes security patches.
Who is affected by CVE-2026-18236?
Organizations and developers using the Google Agent Development Kit (ADK) are at risk from CVE-2026-18236.
What type of attacks can be executed using CVE-2026-18236?
An attacker can execute unauthorized tools by forging a tool confirmation response due to the vulnerability in CVE-2026-18236.