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The CVE-2025-XXXX vulnerability in Agno stems from a race condition within the session state management mechanism. When the `session_state` object is passed to an Agent or Team during concurrent `run` or `arun` operations, the framework fails to properly isolate session contexts under high load. Specifically, the internal function responsible for assigning the final state to a session’s persistent storage does not employ adequate locking or thread-local storage checks. This creates a narrow window where a `session_state` object from one user’s completed request can be incorrectly associated with and saved to a different, simultaneously active session ID. Consequently, sensitive user data from one session is persisted and subsequently exposed to an unrelated user when they initiate their next interaction, leading to a direct confidentiality breach.
Platform: Agno
Version: <2.2.2
Vulnerability: Session Overwrite
Severity: High
date: 2025-10-31
Prediction: Patch 2025-11-07
What Undercode Say:
Simulating high concurrency to trigger the race condition
for i in {1..50}; do
curl -s -b "session_id=session_$i" "http://agno-host/run" &
done
wait
Code snippet showing the vulnerable state assignment def arun(self, session_state): ... processing logic ... self.persistence_layer.save(session_state) Race condition here
How Exploit:
Attackers send simultaneous requests to overwhelm the server, exploiting the race window to mix session states and steal another user’s data.
Protection from this CVE
Upgrade to Agno version 2.2.2 immediately. Implement external session management with robust locking if an immediate upgrade is not possible.
Impact:
Unauthorized cross-user session data access, potential exposure of sensitive information, and confidentiality breach.
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Sources:
Reported By: github.com
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