Goal Reached Thanks to every supporter — we hit 100%!

Goal: 1000 CNY · Raised: 1359 CNY

100%
Buy Us a Coffee

CVE-2026-54033— LibreChat: SSRF via User-Provided Custom Endpoint baseURL — no private IP validation on user-configured API base URLs

Quick assessment

Affected
danny-avila LibreChat
Exploitation
Public or AI PoC available; prioritize validation
Recommended action
Check the vendor advisory and references for a fixed version. If immediate upgrade is impossible, restrict exposure and increase monitoring.

danny-avila LibreChat是danny-avila个人开发者的 Danny Avila LibreChat 0.8.4-rc1之前版本存在服务端请求伪造漏洞，该漏洞源于在配置自定义OpenAI兼容API端点时未进行SSRF验证，如私有IP检查、方案限制或DNS固定，允许经过身份验证的用户将baseURL设置为内部网络地址。

CVSS 7.7 · High EPSS 0.35% · P27

Affected Version Matrix 1

VendorProduct Version RangeStatus
danny-avila LibreChat < 0.8.4-rc1 affected
Get alerts for future matching vulnerabilities Log in to subscribe

I. Basic Information for CVE-2026-54033

Vulnerability Information
Have questions about the vulnerability? See if Shenlong's analysis helps!
View Shenlong Deep Dive ↗

Although we use advanced large model technology, its output may still contain inaccurate or outdated information.Shenlong tries to ensure data accuracy, but please verify and judge based on the actual situation.

Vulnerability Title
LibreChat: SSRF via User-Provided Custom Endpoint baseURL — no private IP validation on user-configured API base URLs
Source: CVE Program / CVE List V5
Vulnerability Description
LibreChat is an enhanced ChatGPT clone that supports multiple AI providers. Prior to 0.8.4-rc1, LibreChat allows users to configure custom OpenAI-compatible API endpoints by setting a baseURL. This URL is used to construct HTTP requests without any SSRF validation — no private IP check, no scheme restriction, no DNS pinning. An authenticated user can set baseURL to internal network addresses. This vulnerability is fixed in 0.8.4-rc1.
Source: CVE Program / CVE List V5
CVSS Information
CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:C/C:H/I:N/A:N
Source: CVE Program / CVE List V5
Vulnerability Type
服务端请求伪造(SSRF)
Source: CVE Program / CVE List V5
Vulnerability Title
Danny Avila LibreChat 服务端请求伪造漏洞
Source: CNNVD (China National Vulnerability Database)
Vulnerability Description
danny-avila LibreChat是danny-avila个人开发者的 Danny Avila LibreChat 0.8.4-rc1之前版本存在服务端请求伪造漏洞，该漏洞源于在配置自定义OpenAI兼容API端点时未进行SSRF验证，如私有IP检查、方案限制或DNS固定，允许经过身份验证的用户将baseURL设置为内部网络地址。
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
danny-avila LibreChat < 0.8.4-rc1 -

II. Public POCs for CVE-2026-54033

# POC Description Source Link Shenlong Link
AI-Generated POC Premium
Qwen3.6-35B-A3B · 8620 chars
Pro+ exclusive includes:
Vulnerability reproduction recording (real sandbox build + trigger, exclusive)
In-depth vulnerability mechanism
Trigger conditions & impact
Full executable POC code
Exploit chain & mitigation
POC zip download
100+ AI POC generations per month

III. Intelligence Information for CVE-2026-54033

请登录查看更多情报信息。

Vendor Advisories for CVE-2026-54033 (1)

Same Patch Batch · danny-avila · 2026-06-25 · 9 CVEs total

CVE-2026-54030 8.0 HIGH LibreChat: Missing Resource Parameter Validation in MCP OAuth Flow
CVE-2026-54027 6.5 MEDIUM LibreChat: Image Upload Route Bypasses Agent Permission Check — Incomplete Fix for File Up
CVE-2026-54037 6.5 MEDIUM LibreChat: Incomplete Fix for CVE-2025-7105 — /api/convos/duplicate Lacks Rate Limiting Ap
CVE-2026-54024 6.5 MEDIUM LibreChat: Incomplete Fix for CVE-2024-11171 — Conversation Import Multer Instance Missing
CVE-2026-54040 5.9 MEDIUM LibreChat: 2FA Backup Code Regeneration Without OTP Verification Allows 2FA Bypass
CVE-2026-54025 5.4 MEDIUM LibreChat: Stored XSS via unescaped image alt text in markdown artifact preview
CVE-2026-54036 5.3 MEDIUM LibreChat: 2FA Re-enrollment Allows Full Account 2FA Takeover Without OTP Verification
CVE-2026-54029 5.3 MEDIUM LibreChat: IDOR in Message Deletion — Incomplete Fix for CVE-2024-41703 Leaves deleteMessa

IV. Related Vulnerabilities

Same product: LibreChat
Same vendor: danny-avila
Same weakness: CWE-918

V. Comments for CVE-2026-54033

No comments yet

Leave a comment