CVE-2026-92359

LOW 3.1

ag-ui-protocol ag-ui CORSMiddleware utils.py create_strands_app cross-domain policy

CVSS Score

3.1

EPSS Score

0.0%

EPSS Percentile

0th

A security flaw has been discovered in ag-ui-protocol ag-ui 0.3.0. The affected element is the function create_strands_app of the file integrations/aws-strands/python/src/ag_ui_strands/utils.py of the component CORSMiddleware. The manipulation results in permissive cross-domain policy with untrusted domains. The attack may be launched remotely. The attack requires a high level of complexity. The exploitability is described as difficult. Upgrading to version [email protected] is sufficient to fix this issue. The patch is identified as 9b143b9668fa52c2054ede9d34a45ac4b4401089. It is suggested to upgrade the affected component.

CWE	CWE-942 CWE-346
Vendor	ag-ui-protocol
Product	ag-ui
Published	Sep 16, 2026
Last Updated	Sep 16, 2026

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CVSS v3 Breakdown

CVSS:3.1/AV:N/AC:H/PR:N/UI:R/S:U/C:L/I:N/A:N/E:X/RL:O/RC:C

Attack Vector

Attack Complexity

Privileges Required

User Interaction

Scope

Confidentiality

Integrity

Availability

Affected Versions

ag-ui-protocol / ag-ui

0.3.0

References

NVD ↗ CVE.org ↗ EPSS Data ↗

vuldb.com: https://vuldb.com/vuln/405445 vuldb.com: https://vuldb.com/vuln/405445/cti vuldb.com: https://vuldb.com/cve/CVE-2026-92359 vuldb.com: https://vuldb.com/submit/934120 github.com: https://github.com/ag-ui-protocol/ag-ui/issues/2433 github.com: https://github.com/ag-ui-protocol/ag-ui/pull/2492 github.com: https://github.com/ag-ui-protocol/ag-ui/commit/9b143b9668fa52c2054ede9d34a45ac4b4401089 github.com: https://github.com/ag-ui-protocol/ag-ui/releases/tag/AGUI.Abstractions%400.0.6 github.com: https://github.com/ag-ui-protocol/ag-ui/

Credits

🔍 colorfullbz (VulDB User)