Quick answers
- Is CVE-2026-92360 exploited in the wild?
- No. Junglewise Threat Intelligence has no report of CVE-2026-92360 being exploited in the wild.
- How severe is CVE-2026-92360?
- Medium severity, with a CVSS score of 6.3, published 16 September 2026.
- Which products and versions are affected?
- Ag-Ui-Protocol Ag-Ui 1.0.
- Is there a fix for CVE-2026-92360?
- No fixed version is recorded yet. Check the vendor's advisory in the references below. If you run it, Junglewise drafts a mitigation that fits your setup and applies it once you approve, with senior security engineers behind it.
- How is CVE-2026-92360 attacked?
- It is attacked over the network.
- Am I affected by CVE-2026-92360?
- Check whether you run Ag-Ui-Protocol Ag-Ui at an affected version. Junglewise does that check for you around the clock: connect your code, cloud and domains, and it matches new vulnerabilities like this one against what you actually run and tells you when one reaches you.
Technical details
The vulnerability is an origin validation error (CWE-346) in the prepareRunAgentInput function of agent/agent.ts. The client-side event application layer blindly trusts the server's event stream (TEXT_MESSAGE_START) for message role information, storing server-asserted user and developer messages without verification. Additionally, the MESSAGES_SNAPSHOT event can replace the entire conversation history with forged entries, and a crafted server-side event chain (RUN_FINISHED → RUN_STARTED → RUN_FINISHED) can clear pendingInterrupts, bypassing human-in-the-loop approval gates. Remote exploitation is possible over the network with no authentication required, as the client trusts any server response. An attacker controlling the server can fabricate messages attributed to the user, inject system commands, and bypass approval workflows.
Affected products
- ag-ui-protocol ag-ui 1.0
Timeline
- 2026-08-18: disclosed: Issue opened on GitHub
- 2026-09-16: advisory: CVE published on NVD