CVE-2025-66450: high-severity vulnerability in danny-avila LibreChat
LibreChat JSON Injection in Chat POST Allows Remote Resource Inclusion and PXSS via Image Upload
Published · Updated
21Vexday Risk Score
No sign of exploitation. No public exploitation artifact known so far.
ssvc Trackcvss 8.6epss 0.2%
exploitation probability
0.2%top 89% of all CVEs
observed exploitation
nono source reports it
LibreChat is a ChatGPT clone with additional features. In versions 0.8.0 and below, when a user posts a question, the iconURL parameter of the POST request can be modified by an attacker. The malicious code is then stored in the chat which can then be shared to other users. When sharing chats with a potentially malicious “tracker”, resources loaded can lead to loss of privacy for users who view the chat link that is sent to them. This issue is fixed in version 0.8.1.
CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:P/VC:H/VI:H/VA:N/SC:L/SI:L/SA:N
Affected products
danny-avila · LibreChatRelated CVEs — danny-avila LibreChat
In the same product, most dangerous first.
CVE-2025-69222CRITICALLibreChat is vulnerable to Server-Side Request Forgery due to missing restrictionsEPSS 4.2%CVE-2026-22252CRITICALLibreChat MCP Stdio Remote Command ExecutionEPSS 4.1%CVE-2026-54037MEDIUMLibreChat: Incomplete Fix for CVE-2025-7105 — /api/convos/duplicate Lacks Rate Limiting Applied to /api/convos/forkEPSS 0.5%CVE-2026-31949MEDIUMLibreChat Denial of Service (DoS) via Unhandled Exception in DELETE /api/convosEPSS 0.5%CVE-2025-54868HIGHLibreChat exposes arbitrary chats through Meilisearch engineEPSS 0.4%CVE-2026-54024MEDIUMLibreChat: Incomplete Fix for CVE-2024-11171 — Conversation Import Multer Instance Missing File Size LimitsEPSS 0.4%