Vulnerability · Published Mar 24, 2026 · Assigned by GitHub_M
CVE-2026-33340LoLLMs WEBUI has unauthenticated Server-Side Request Forgery (SSRF) in /api/proxy endpoint
Critical 9.1
In plain English
A critical-severity missing authentication in lollms-webui from ParisNeo. Proof-of-concept exploit code is public. The chance it is exploited in the next 30 days is estimated at 21.6% (higher than 98% of all known vulnerabilities). Ready-made attack tooling exists: Nuclei, public proof-of-concept code.
Official 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.
Affected products (as reported)
| Vendor | Product | Versions |
|---|---|---|
| ParisNeo | lollms-webui | <= 8c5dcef63d847bb3d027ec74915d8fe4afd3014e |
Weakness: CWE-306, CWE-918 · Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:N