CVE-2025-8848: A vulnerability in danny-avila/librechat version 0.7.9 allows for HTML injection via the Accept-Language header. When…
CVE-2025-8848 · Severity: medium · CVSS 5.4 · Published 2025-10-22
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.
No. Junglewise Threat Intelligence has no report of CVE-2025-8848 being exploited in the wild.
How severe is CVE-2025-8848?
Medium severity, with a CVSS score of 5.4, published 22 October 2025.
Which products and versions are affected?
LibreChat. The advisory does not name versions.
Is there a fix for CVE-2025-8848?
No fixed version is recorded yet. Check the vendor's advisory in the references below. If you run it, Junglewise drafts a mitigation that fits your setup and applies it once you approve, with senior security engineers behind it.
Am I affected by CVE-2025-8848?
Check whether you run LibreChat. Junglewise does that check for you around the clock: connect your code, cloud and domains, and it matches new vulnerabilities like this one against what you actually run and tells you when one reaches you.