CVE-2025-8848

A vulnerability in danny-avila/librechat version 0.7.9 allows for HTML injection via the Accept-Language header. When a logged-in user sends an HTTP GET request with a crafted Accept-Language header, arbitrary HTML can be injected into the <html lang=""> tag of the response. This can lead to potential security risks such as cross-site scripting (XSS) attacks.

CVSS v3 5.4 MEDIUM

5.4^/10

CVSS v3 : MEDIUM

Vector :

Exploitability : 2.3 / Impact : 2.7

Attack Vector NETWORK

Attack Complexity LOW

Privileges Required LOW

User Interaction REQUIRED

Confidentiality Impact LOW

Integrity Impact LOW

Availability Impact NONE

Scope CHANGED

References

Link	Resource
https://huntr.com/bounties/a05ebc1f-882a-4adc-b178-d3cefa4b730e	Exploit Third Party Advisory

Configurations

Configuration 1 (hide)

cpe:2.3:a:librechat:librechat:0.7.9:-:*:*:*:*:*:*

History

08 Oct 2026, 11:10

Type	Values Removed	Values Added
Summary		(es) Una vulnerabilidad en danny-avila/librechat versión 0.7.9 permite la inyección de HTML a través del encabezado Accept-Language. Cuando un usuario autenticado envía una solicitud HTTP GET con un encabezado Accept-Language manipulado, se puede inyectar HTML arbitrario en la etiqueta <html lang=“”> de la respuesta. Esto puede conducir a riesgos de seguridad potenciales como ataques de cross-site scripting (XSS).

Information

Published : 2025-10-22 14:15

Updated : 2026-10-08 11:10

NVD link : CVE-2025-8848

Mitre link : CVE-2025-8848

CVE.ORG link : CVE-2025-8848

JSON object : View

Products Affected

librechat

librechat

CWE

CWE-94

Improper Control of Generation of Code ('Code Injection')

CWE-79

Improper Neutralization of Input During Web Page Generation ('Cross-site Scripting')

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