CVE-2025-66451LibreChat's Improper Input Validation in Prompt Creation API Enables Unauthorized Permission Changes
Updated under an hour ago ()
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No exploitation reported and no EPSS estimate yet.
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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.
- CVSS
- 5.3 MEDIUM (v4.0, CNA)CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:P/VC:L/VI:L/VA:N/SC:N/SI:N/SA:N
- Weakness (CWE)
- CWE-20, CWE-915
- Known exploited
- Not in CISA's KEV catalog
- EPSS (exploitation in the next 30 days)
- Not loaded for this CVE
- Assigned by
- GitHub_M
- NVD analysis
- Analyzed
- Record last updated
- Dec 12, 2025
- First seen by InfoSec Signals
- Oct 9, 2026
Affected products
danny-avila LibreChat danny_avila:librechat (from the name) | before 0.8.1 | CNA record |
librechat librechat librechat:librechat | before 0.8.1 | NVD |
References
- https://github.com/danny-avila/LibreChat/security/advisories/GHSA-vpqq-5qr4-655hx-refsource-confirm, exploit, vendor-advisory
- https://github.com/danny-avila/LibreChat/commit/01413eea3d3c1454d32ca9704fa9640407839737x-refsource-misc, patch
The CVE record on cve.org NVD's entry
The CVE record is authoritative. Products marked “from the name” were identified from the CNA's free-text names, not a CPE, and are matched less certainly. This product uses the NVD API but is not endorsed or certified by the NVD.