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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.

PUBLISHED Reserved 2026-03-18 | Published 2026-03-24 | Updated 2026-03-24 | Assigner GitHub_M




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

Problem types

CWE-306: Missing Authentication for Critical Function

CWE-918: Server-Side Request Forgery (SSRF)

Product status

<= 8c5dcef63d847bb3d027ec74915d8fe4afd3014e
affected

References

github.com/...-webui/security/advisories/GHSA-mcwr-5469-pxj4 exploit

github.com/...-webui/security/advisories/GHSA-mcwr-5469-pxj4

github.com/...fd3014e/lollms/server/endpoints/lollms_apps.py

cve.org (CVE-2026-33340)

nvd.nist.gov (CVE-2026-33340)

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