CVE-2025-8848

MEDIUM NUCLEI

Librechat - Code Injection

Title source: rule

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.

Nuclei Templates (1)

LibreChat <= 0.7.9 - HTML Injection via Accept-Language Header

MEDIUMVERIFIEDby Kazgangap

FOFA: app="LibreChat"

References (1)

[Exploit, Third Party Advisory] https://huntr.com/bounties/a05ebc1f-882a-4adc-b178-d3cefa4b730e

Scores

CVSS v3 5.4

EPSS 0.0001

EPSS Percentile 1.7%

Attack Vector NETWORK

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

Details

CWE

CWE-94 CWE-79

Status published

Products (1)

librechat/librechat 0.7.9

Published Oct 22, 2025

Tracked Since Feb 18, 2026