CVE-2025-8848
Medium
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.
SeverityMedium
CVSS5.4
Exploit probability—
ProductLibrechat
PublishedOct 22, 2025
First seenOct 22, 2025
Weakness typeCWE-94Code injection
How to fix
Sources list no fixed version or patch link for this vulnerability.
Affected products
| Product | Affected versions | Fixed in |
|---|---|---|
| librechat librechat | 0.7.9 | — |
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