CVE-2026-92360: ag-ui-protocol ag-ui Event Application Layer agent.ts prepareRunAgentInput origin validation

Severity: medium (CVSS 6.3 v3.1)
Exploited in the wild: not listed in CISA KEV
EPSS: 0.2% probability of exploitation in the next 30 days
Public exploit or detection template: none known
Published: 2026-09-16 · updated 2026-09-23
Weakness: CWE-345

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.

Affected products

ag-ui-protocol ag-ui: 1.0

References

https://github.com/ag-ui-protocol/ag-ui/
https://github.com/ag-ui-protocol/ag-ui/issues/2437
https://github.com/ag-ui-protocol/ag-ui/pull/2701
https://vuldb.com/cve/CVE-2026-92360
https://vuldb.com/submit/934950
https://vuldb.com/vuln/405446
https://vuldb.com/vuln/405446/cti

Get alerted when CVE-2026-92360 or the next vulnerability affects your stack