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.

Attack Vector Network

Attack Complexity Low

Privileges Required Low

Attack Requirements None

User Interaction None

Vulnerable System Confidentiality Impact Low

Vulnerable System Integrity Impact Low

Vulnerable System Availability Impact Low

Subsequent System Confidentiality Impact None

Subsequent System Integrity Impact None

Subsequent System Availability Impact None

Attack Vector Network

Attack Complexity Low

Privileges Required Low

Scope Unchanged

Confidentiality Impact Low

Integrity Impact Low

Availability Impact Low

User Interaction None

Attack Vector Network

Attack Complexity Low

Privileges Required Low

Scope Unchanged

Confidentiality Impact Low

Integrity Impact Low

Availability Impact Low

User Interaction None

Access Vector Network

Access Complexity Low

Authentication Single

Confidentiality Impact Partial

Integrity Impact Partial

Availability Impact Partial

This CVE is not in the KEV list.

No EPSS score available.

Key SSVC decision points have not yet been added.

Default status is the baseline for the product, each version can override it (e.g. patched versions marked unaffected).

Vendor Product Default status Versions
ag-ui-protocol ag-ui affected
Version Status Constraints
1.0 affected —

No data.

No data.

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Project Subscriptions

Vendors Products
Ag-ui-protocol Subscribe
Ag-ui Subscribe
Advisories

No advisories yet.

Fixes

Solution

No solution given by the vendor.

Workaround

No workaround given by the vendor.

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

Wed, 16 Sep 2026 12:45:00 +0000

Type Values Removed Values Added
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.
Title ag-ui-protocol ag-ui Event Application Layer agent.ts prepareRunAgentInput origin validation
First Time appeared Ag-ui-protocol
Ag-ui-protocol ag-ui
Weaknesses CWE-345
CWE-346
CPEs cpe:2.3:a:ag-ui-protocol:ag-ui:*:*:*:*:*:*:*:*
Vendors & Products Ag-ui-protocol
Ag-ui-protocol ag-ui
References
Metrics cvssV2_0

{'score': 6.5, 'vector': 'AV:N/AC:L/Au:S/C:P/I:P/A:P/E:ND/RL:ND/RC:UR'}

cvssV3_0

{'score': 6.3, 'vector': 'CVSS:3.0/AV:N/AC:L/PR:L/UI:N/S:U/C:L/I:L/A:L/E:X/RL:X/RC:R'}

cvssV3_1

{'score': 6.3, 'vector': 'CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:L/I:L/A:L/E:X/RL:X/RC:R'}

cvssV4_0

{'score': 5.3, 'vector': 'CVSS:4.0/AV:N/AC:L/AT:N/PR:L/UI:N/VC:L/VI:L/VA:L/SC:N/SI:N/SA:N/E:X'}

Projects

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cve-icon MITRE

Status: PUBLISHED

Assigner: VulDB

Published:

Updated: 2026-09-16T12:30:09.510Z

Reserved: 2026-09-16T05:36:05.161Z

Link: CVE-2026-92360

cve-icon Vulnrichment

No data.

cve-icon NVD

Status : Deferred

Published: 2026-09-16T13:18:09.087

Modified: 2026-09-16T17:53:40.500

Link: CVE-2026-92360

cve-icon Redhat

No data.

cve-icon OpenCVE Enrichment

No data.

Weaknesses