Vulnerability in Ag-Ui-Protocol Ag-Ui
CVE-2026-92360
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.
Published · last modified .
CVSS v3 metric
CVSS v3 base score 6.3 (Medium). Vector: CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:L/I:L/A:L.
EPSS exploit prediction
EPSS: 0.002 (11.0th percentile), scored .
Very low probability of exploitation in the next 30 days; routine patching cadence is appropriate. 11th percentile — 11.0% of CVEs in the catalogue have a lower EPSS than this one. How to read EPSS.
EPSS over last 30 days · oldest: 0.002 · newest: 0.002 · change: 0.000
Affected products
- Ag-Ui-Protocol Ag-Ui — versions 1.0
Weakness classification (CWE)
References
- vuldb.com/vuln/405446 (technical-description, vdb-entry)
- vuldb.com/vuln/405446/cti (signature, permissions-required)
- vuldb.com/cve/CVE-2026-92360 (third-party-advisory)
- vuldb.com/submit/934950 (third-party-advisory)
- github.com/ag-ui-protocol/ag-ui/issues/2437 (issue-tracking)
- github.com/ag-ui-protocol/ag-ui/pull/2701 (issue-tracking, patch)
- github.com/ag-ui-protocol/ag-ui/ (product)
Frequently asked questions
- What is CVE-2026-92360?
- CVE-2026-92360 is a medium-severity vulnerability in Ag-Ui-Protocol Ag-Ui, classified under Insufficient Verification of Data Authenticity. CVSS score: 6.3/10. Published 2026-09-16.
- How severe is CVE-2026-92360?
- Medium severity. CVSS v3 base score is 6.3 out of 10.