CVE-2025-8848

MediumCVSS 5.4/10Last modified Oct 8, 2026

Description

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.

Metrics

CVSS 3.1 5.4/10CVSS:3.1/AV:N/AC:L/PR:L/UI:R/S:C/C:L/I:L/A:N

Weakness enumeration

CWE-94 CWE-79

Affected software

No affected versions have been published.

Timeline

Published: Oct 22, 2025
Last modified: Oct 8, 2026
NVD status: Analyzed

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