CVE-2026-33340

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

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

ParisNeo · lollms-webui

CVSS v3.1 GITHUB

9.1 CRITICALCVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:N

EPSS

1.66% chance of exploitation in the next 30 days, 76th percentile

Nuclei

critical · CWE-306

Published

2026-03-24

Proof-of-concept exploits (1)

• regaan/CVE-2026-333400★ · 2026-04-11

Nuclei templates (1)

• projectdiscovery/nuclei-templates/blob/main/http/cves/2026/CVE-2026-33340.yaml

Security advisories

• ParisNeo/lollms-webui/security/advisories/GHSA-mcwr-5469-pxj4
• ParisNeo/lollms-webui/blob/8c5dcef63d847bb3d027ec74915d8fe4afd3014e/lollms/server/endpoin…

References

• CVE Record
• NVD entry