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CVE-2026-4276— LibreChat RAG API, version 0.7.0, contains a log-injection vulnerability that allows attackers to forge log entries.

Quick assessment

Affected
LibreChat RAG API
Exploitation
No confirmed in-the-wild exploitation; assess based on exposure
Recommended action
Check the vendor advisory and references for a fixed version. If immediate upgrade is impossible, restrict exposure and increase monitoring.

LibreChat RAG API是LibreChat开源的一个用于构建检索增强生成能力的接口服务。 LibreChat RAG API 0.7.0版本存在安全漏洞，该漏洞源于日志注入，可能导致攻击者伪造日志条目。

AI Predicted 5.3 Difficulty: Easy EPSS 0.29% · P21

Possible ATT&CK Techniques 1 AI

T1078 · Valid Accounts
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I. Basic Information for CVE-2026-4276

Vulnerability Information
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Vulnerability Title
LibreChat RAG API, version 0.7.0, contains a log-injection vulnerability that allows attackers to forge log entries.
Source: CVE Program / CVE List V5
Vulnerability Description
LibreChat RAG API, version 0.7.0, contains a log-injection vulnerability that allows attackers to forge log entries.
Source: CVE Program / CVE List V5
CVSS Information
N/A
Source: CVE Program / CVE List V5
Vulnerability Type
N/A
Source: CVE Program / CVE List V5
Vulnerability Title
LibreChat RAG API 安全漏洞
Source: CNNVD (China National Vulnerability Database)
Vulnerability Description
LibreChat RAG API是LibreChat开源的一个用于构建检索增强生成能力的接口服务。 LibreChat RAG API 0.7.0版本存在安全漏洞，该漏洞源于日志注入，可能导致攻击者伪造日志条目。
Source: CNNVD (China National Vulnerability Database)
CVSS Information
N/A
Source: CNNVD (China National Vulnerability Database)
Vulnerability Type
N/A
Source: CNNVD (China National Vulnerability Database)

Affected Products

Vendor Product Affected Versions CPE Subscribe
LibreChat RAG API 0.7.0 -

II. Public POCs for CVE-2026-4276

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III. Intelligence Information for CVE-2026-4276

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Vendor Advisories for CVE-2026-4276 (1)

IV. Related Vulnerabilities

Same vendor: LibreChat