CVE-2026-44654

LibreChat is an enhanced ChatGPT clone that supports multiple AI providers. In versions up to and including 0.8.3, a shared-agent editor can delete file records through `DELETE /api/files` that the owner has reused across multiple agents. The deletion removes the file globally — not just from the shared agent — breaking the owner's other private agents that reference the same `file_id`. The private agent retains a stale `file_id` reference that no longer resolves. A shared-agent editor can destroy files that the owner uses across multiple agents. The owner's private agents — which the attacker has no access to — break silently with stale `file_id` references. This is a cross-agent integrity violation: editing access to one agent should not affect another. Version 0.8.4 contains a patch.

CVSS v3 8.1 HIGH

8.1^/10

CVSS v3 : HIGH

Vector :

Exploitability : 2.8 / Impact : 5.2

Attack Vector NETWORK

Attack Complexity LOW

Privileges Required LOW

User Interaction NONE

Confidentiality Impact NONE

Integrity Impact HIGH

Availability Impact HIGH

Scope UNCHANGED

References

Link	Resource
https://github.com/danny-avila/LibreChat/security/advisories/GHSA-f8jg-v856-mf6q	Exploit Vendor Advisory
https://github.com/danny-avila/LibreChat/security/advisories/GHSA-f8jg-v856-mf6q	Exploit Vendor Advisory

Configurations

Configuration 1 (hide)

cpe:2.3:a:librechat:librechat:*:*:*:*:*:*:*:*

History

No history.

Information

Published : 2026-06-02 23:16

Updated : 2026-07-21 19:10

NVD link : CVE-2026-44654

Mitre link : CVE-2026-44654

CVE.ORG link : CVE-2026-44654

JSON object : View

Products Affected

librechat

librechat

CWE

CWE-863

Incorrect Authorization

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In versions up to and including 0.8.3, a shared-agent editor can delete file records through `DELETE /api/files` that the owner has reused across multiple agents. The deletion removes the file globally \u2014 not just from the shared agent \u2014 breaking the owner's other private agents that reference the same `file_id`. The private agent retains a stale `file_id` reference that no longer resolves. A shared-agent editor can destroy files that the owner uses across multiple agents. The owner's private agents \u2014 which the attacker has no access to \u2014 break silently with stale `file_id` references. This is a cross-agent integrity violation: editing access to one agent should not affect another. Version 0.8.4 contains a patch."}, {"lang": "es", "value": "LibreChat es un clon mejorado de ChatGPT que soporta m\u00faltiples proveedores de IA. En versiones hasta la 0.8.3 inclusive, un editor de agente compartido puede eliminar registros de archivos a trav\u00e9s de 'DELETE /api/files' que el propietario ha reutilizado en m\u00faltiples agentes. La eliminaci\u00f3n elimina el archivo globalmente - no solo del agente compartido - rompiendo los otros agentes privados del propietario que referencian el mismo 'file_id'. El agente privado retiene una referencia 'file_id' obsoleta que ya no se resuelve. Un editor de agente compartido puede destruir archivos que el propietario utiliza en m\u00faltiples agentes. Los agentes privados del propietario - a los que el atacante no tiene acceso - fallan silenciosamente con referencias 'file_id' obsoletas. Esto es una violaci\u00f3n de integridad entre agentes: el acceso de edici\u00f3n a un agente no deber\u00eda afectar a otro. La versi\u00f3n 0.8.4 contiene un parche."}], "lastModified": "2026-07-21T19:10:00.107", "configurations": [{"nodes": [{"negate": false, "cpeMatch": [{"criteria": "cpe:2.3:a:librechat:librechat:*:*:*:*:*:*:*:*", "vulnerable": true, "matchCriteriaId": "96A94002-7F28-4F12-A223-7BC24CF06116", "versionEndExcluding": "0.8.5"}], "operator": "OR"}]}], "sourceIdentifier": "security-advisories@github.com"}