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CVE-2026-33340— LoLLMs WEBUI has unauthenticated Server-Side Request Forgery (SSRF) in /api/proxy endpoint

Quick assessment

Affected
ParisNeo lollms-webui
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.

LoLLMs WEBUI是Saifeddine ALOUI个人开发者的一个支持多模型和多模态集成的大模型Web用户界面。 LoLLMs WEBUI存在安全漏洞，该漏洞源于/api/proxy端点允许未经验证的用户强制服务器发起任意GET请求，可能导致访问内部服务、扫描本地网络或泄露敏感云元数据。

CVSS 9.1 · Critical EPSS 1.66% · P76

Public Exploits 1

Nuclei · 1 CVE-2026-33340.yaml [template]
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I. Basic Information for CVE-2026-33340

Vulnerability Information
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Vulnerability Title
LoLLMs WEBUI has unauthenticated Server-Side Request Forgery (SSRF) in /api/proxy endpoint
Source: CVE Program / CVE List V5
Vulnerability Description
LoLLMs WEBUI provides the Web user interface for Lord of Large Language and Multi modal Systems. A critical Server-Side Request Forgery (SSRF) vulnerability has been identified in all known existing versions of `lollms-webui`. The `@router.post("/api/proxy")` endpoint allows unauthenticated attackers to force the server into making arbitrary GET requests. This can be exploited to access internal services, scan local networks, or exfiltrate sensitive cloud metadata (e.g., AWS/GCP IAM tokens). As of time of publication, no known patched versions are available.
Source: CVE Program / CVE List V5
CVSS Information
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:N
Source: CVE Program / CVE List V5
Vulnerability Type
关键功能的认证机制缺失
Source: CVE Program / CVE List V5
Vulnerability Title
LoLLMs WEBUI 安全漏洞
Source: CNNVD (China National Vulnerability Database)
Vulnerability Description
LoLLMs WEBUI是Saifeddine ALOUI个人开发者的一个支持多模型和多模态集成的大模型Web用户界面。 LoLLMs WEBUI存在安全漏洞，该漏洞源于/api/proxy端点允许未经验证的用户强制服务器发起任意GET请求，可能导致访问内部服务、扫描本地网络或泄露敏感云元数据。
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)

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Affected Products

Vendor Product Affected Versions CPE Subscribe
ParisNeo lollms-webui <= 8c5dcef63d847bb3d027ec74915d8fe4afd3014e -

II. Public POCs for CVE-2026-33340

# POC Description Source Link Shenlong Link
1 LoLLMs WEBUI contains a server-side request forgery caused by unauthenticated access to the /api/proxy endpoint, letting attackers force the server to make arbitrary GET requests, exploit requires no authentication. https://github.com/projectdiscovery/nuclei-templates/blob/main/http/cves/2026/CVE-2026-33340.yaml POC Details
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III. Intelligence Information for CVE-2026-33340

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Patches & Fixes for CVE-2026-33340 (1)

Vendor Advisories for CVE-2026-33340 (1)

IV. Related Vulnerabilities

Same vendor: ParisNeo
Same weakness: CWE-306

V. Comments for CVE-2026-33340

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