CVE-2025-66451 | THREATINT

Description

LibreChat is a ChatGPT clone with additional features. In versions 0.8.0 and below, when creating prompts, JSON requests are sent to define and modify the prompts via PATCH endpoint for prompt groups (/api/prompts/groups/:groupId). However, the request bodies are not sufficiently validated for proper input, enabling users to modify prompts in a way that was not intended as part of the front end system. The patchPromptGroup function passes req.body directly to updatePromptGroup() without filtering sensitive fields. This issue is fixed in version 0.8.1.

PUBLISHED Reserved 2025-12-01 | Published 2025-12-11 | Updated 2025-12-12 | Assigner GitHub_M

MEDIUM: 5.3CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:P/VC:L/VI:L/VA:N/SC:N/SI:N/SA:N

Problem types

CWE-20: Improper Input Validation

CWE-915: Improperly Controlled Modification of Dynamically-Determined Object Attributes

Product status

< 0.8.1

affected

References

github.com/...reChat/security/advisories/GHSA-vpqq-5qr4-655h

github.com/...ommit/01413eea3d3c1454d32ca9704fa9640407839737

cve.org (CVE-2025-66451)

nvd.nist.gov (CVE-2025-66451)

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