> CVE-2026-92359 [LOW]

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PUBLISHED
2026-09-16 13:18
MODIFIED
2026-09-16 13:18
CVSS_SCORE V3
2.3
EPSS (Prob. Exploit)
0.27%
Top 81.5%
DATA SOURCES:
NVD 🔗 2026-09-16 CWE MITRE 🔗 2026-10-01 FIRST EPSS 🔗 2026-10-18 OSV 🔗 2026-10-19

> DESCRIPTION

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.

> AFFECTED_PRODUCTS

ℹ️ Aucun produit affecté n'a encore été publié par NVD pour cette CVE.

> CVSS V3 METRICS

CVSS_VECTOR
CVSS:4.0/AV:N/AC:H/AT:N/PR:N/UI:P/VC:L/VI:N/VA:N/SC:N/SI:N/SA:N/E:X/CR:X/IR:X/AR:X/MAV:X/MAC:X/MAT:X/MPR:X/MUI:X/MVC:X/MVI:X/MVA:X/MSC:X/MSI:X/MSA:X/S:X/AU:X/R:X/V:X/RE:X/U:X

> MÉTRIQUES CVSS DÉTAILLÉES

CVSS:4.0/AV:N/AC:H/AT:N/PR:N/UI:P/VC:L/VI:N/VA:N/SC:N/SI:N/SA:N/E:X/CR:X/IR:X/AR:X/MAV:X/MAC:X/MAT:X/MPR:X/MUI:X/MVC:X/MVI:X/MVA:X/MSC:X/MSI:X/MSA:X/S:X/AU:X/R:X/V:X/RE:X/U:X
Métrique Valeur Interprétation
AV (Vecteur d'Attaque)
Attack Vector
Network (N)
Exploit possible à distance via réseau (HTTP, API, etc.)
AC (Complexité d'Attaque)
Attack Complexity
High (H)
Conditions spécifiques doivent être réunies pour exploiter
PR (Privilèges Requis)
Privileges Required
None (N)
Aucune authentification requise
UI (Interaction Utilisateur)
User Interaction
Unknown (P)
Interaction inconnue
S (Périmètre)
Scope
Unchanged (U)
Impact reste dans le périmètre du composant compromis
C (Impact Confidentialité)
Confidentiality Impact
Low (L)
Divulgation limitée d'informations
I (Impact Intégrité)
Integrity Impact
None (N)
Aucune modification de données possible
A (Impact Disponibilité)
Availability Impact
None (N)
Aucune interruption de service

> RÉSUMÉ DES IMPACTS

Confidentialité
Low
Divulgation limitée d'informations
Intégrité
None
Aucune modification de données possible
Disponibilité
None
Aucune interruption de service

> WEAKNESSES

CWE-346 CWE-942

> CWE DETAILED DESCRIPTIONS

CWE-346: Origin Validation Error - The product does not properly verify that the source of data or communication is valid. | CWE-942: Permissive Cross-domain Security Policy with Untrusted Domains - The product uses a web-client protection mechanism such as a Content Security Policy (CSP) or cross-domain policy file, but the policy includes untrusted domains with which the web client is allowed to communicate.

> OSV (GOOGLE OPEN SOURCE VULNERABILITIES)

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

AFFECTED PACKAGES:
Unknown / Unknown
16 versions affected

> HISTORIQUE DES MODIFICATIONS

Première apparition
16/09/2026 13:18
Source: NVD
📊 ENRICHISSEMENT 01/10/2026 06:01
CWE
Champ modifié: Description CWE
Ancienne valeur:
N/A
Nouvelle valeur:
CWE-346: Origin Validation Error - The product does not properly verify that the source of data or communication is valid. | CWE-942: Permissive Cross-domain Security Policy with Untrusted Domains - T...
Total des modifications: 1 Dernière mise à jour: 3 weeks ago

> REFERENCES

https://github.com/ag-ui-protocol/ag-ui/
https://github.com/ag-ui-protocol/ag-ui/commit/9b143b9668fa52c2054ede9d34a45ac4b...
https://github.com/ag-ui-protocol/ag-ui/issues/2433
https://github.com/ag-ui-protocol/ag-ui/pull/2492
https://github.com/ag-ui-protocol/ag-ui/releases/tag/AGUI.Abstractions%400.0.6
https://vuldb.com/cve/CVE-2026-92359
https://vuldb.com/submit/934120
https://vuldb.com/vuln/405445
https://vuldb.com/vuln/405445/cti
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