Medium severity6.1NVD Advisory· Published Dec 11, 2025· Updated Jun 17, 2026
CVE-2025-66452
CVE-2025-66452
Description
LibreChat is a ChatGPT clone with additional features. In versions 0.8.0 and below, there is no handler for JSON parsing errors; SyntaxError from express.json() includes user input in the error message, which gets reflected in responses. User input (including HTML/JavaScript) can be exposed in error responses, creating an XSS risk if Content-Type isn't strictly enforced. This issue does not have a fix at the time of publication.
AI Insight
LLM-synthesized narrative grounded in this CVE's description and references.
Affected products
7- osv-coords3 versions
< 0.8.2-r1+ 2 more
- (no CPE)range: < 0.8.2-r1
- (no CPE)range: < 0.8.2-r1
- (no CPE)range: < 0.8.2-r1
Patches
Vulnerability mechanics
References
1- github.com/danny-avila/LibreChat/security/advisories/GHSA-q6c5-gvj5-c264nvdExploitVendor Advisory
News mentions
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