CVE-2026-92360

ag-ui-protocol ag-ui Event Application Layer agent.ts prepareRunAgentInput origin validation

MEDIUM
6.3
CVSS Score
Published: September 16, 2026 at 12:30 PM UTC
Updated: September 23, 2026 at 03:09 PM UTC
1 product affected across 1 vendorAG-UI

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Severity
MEDIUM6.3
Exploit prediction
EPSS 0.2%
SSVC
No known exploit

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

Our own answer: ranges merged, affected separated from platform-only, with confidence and review flags.

Remediation

No guide yet

No remediation guidance has been written for this CVE yet. What the record does show:

References (7)

VDB EntryTechnical Description
Source: cverecord
https://vuldb.com/vuln/405446
SignaturePermissions Required
Source: cverecord
https://vuldb.com/vuln/405446/cti
Third Party Advisory
Source: cverecord
https://vuldb.com/cve/CVE-2026-92360
Third Party Advisory
Source: cverecord
https://vuldb.com/submit/934950
Issue TrackingPatch
Source: cverecord
https://github.com/ag-ui-protocol/ag-ui/pull/2701

SSVC — Action Prioritization

SSVCNo known exploitNot automatablePartial impact

SSVC signals action urgency (what to patch first), separate from CVSS which measures severity.

CVSS

6.3MEDIUMVulDB
Vector?

Quick Info

StatusDEFERRED
CWE
CWE-346CWE-345

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