CVE-2025-8848— HTML Injection in Accept-Language Header in danny-avila/librechat
Quick assessment
Affected
danny-avila danny-avila/librechat
Exploitation
Public or AI PoC available; prioritize validation
Recommended action
Check the vendor advisory and references for a fixed version. If immediate upgrade is impossible, restrict exposure and increase monitoring.
LibreChat是Danny Avila个人开发者的一个增强的 ChatGPT 克隆。 LibreChat 0.7.9版本存在代码注入漏洞，该漏洞源于Accept-Language标头未经验证输入，可能导致跨站脚本攻击。
Public Exploits 1
Nuclei · 1
CVE-2025-8848.yaml [template]
Possible ATT&CK Techniques 1 AI
T1189 · Drive-by Compromise
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I. Basic Information for CVE-2025-8848
Vulnerability Information
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Vulnerability Title
HTML Injection in Accept-Language Header in danny-avila/librechat
Source: CVE Program / CVE List V5
Vulnerability 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.
Source: CVE Program / CVE List V5
CVSS Information
N/A
Source: CVE Program / CVE List V5
Vulnerability Type
对生成代码的控制不恰当(代码注入)
Source: CVE Program / CVE List V5
Vulnerability Title
LibreChat 代码注入漏洞
Source: CNNVD (China National Vulnerability Database)
Vulnerability Description
LibreChat是Danny Avila个人开发者的一个增强的 ChatGPT 克隆。 LibreChat 0.7.9版本存在代码注入漏洞，该漏洞源于Accept-Language标头未经验证输入，可能导致跨站脚本攻击。
Source: CNNVD (China National Vulnerability Database)
CVSS Information
N/A
Source: CNNVD (China National Vulnerability Database)
Vulnerability Type
N/A
Source: CNNVD (China National Vulnerability Database)
Affected Products
| Vendor | Product | Affected Versions | CPE | Subscribe |
|---|---|---|---|---|
| danny-avila | danny-avila/librechat | unspecified ~ latest | - |
|
II. Public POCs for CVE-2025-8848
| # | POC Description | Source Link | Shenlong Link |
|---|---|---|---|
| 1 | danny-avila/librechat 0.7.9 contains a stored XSS caused by improper sanitization of the Accept-Language header, letting logged-in users inject arbitrary HTML into the html lang= tag, exploit requires user to be logged in. | https://github.com/projectdiscovery/nuclei-templates/blob/main/http/cves/2025/CVE-2025-8848.yaml | POC Details |
AI-Generated POC
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