CVE-2026-92360 ag-ui-protocol ag-ui Event Application Layer agent.ts prepareRunAgentInput origin validation
Attackers can bypass origin validation in the ag-ui protocol library, potentially allowing unauthorized access or interaction with the Event Application Layer.
- Exploited in the wild
- Not known
- Login needed
- Any signed-in user
- Attackable
- Over the internet
- Victim action needed
- Not needed
- Fix
- None listed
What is CVE-2026-92360?
CVE-2026-92360 is a medium-severity missing authorization vulnerability in ag-ui-protocol ag-ui, published on 16 Sep 2026. Any signed-in user can exploit it over the network, with no action from the victim.
Official description
A weakness has been identified in ag-ui-protocol ag-ui 1.0. The impacted element is the function prepareRunAgentInput of the file agent/agent.ts of the component Event Application Layer. This manipulation of the argument TEXT_MESSAGE_START causes origin validation error. Remote exploitation of the attack is possible. The pull request to fix this issue awaits acceptance.
Which versions are affected by CVE-2026-92360?
How do I fix CVE-2026-92360?
No fix has been published for CVE-2026-92360 yet. Limit exposure of the affected software until one is available.
Upgrade, and check permissions on every request on the server, not only in the interface. More about Missing authorization.
Is CVE-2026-92360 being exploited?
There is no known exploitation of CVE-2026-92360 in the wild and no public exploit code.
Sources
Also known as GHSA-wvf6-r87g-jh87.