CVE-2026-33340 — CRITICAL (9.1)

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.

CVSS Score

9.1

CRITICAL

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

Attack Vector

NETWORK

Attack Complexity

LOW

Privileges Required

NONE

User Interaction

NONE

Scope

UNCHANGED

Confidentiality

HIGH

Integrity

HIGH

Availability

NONE

Affected Products

Vendor	Product	Versions
Lollms	Lollms Web Ui	-

Related Weaknesses (CWE)

CWE-918 CWE-306

References

https://github.com/ParisNeo/lollms-webui/blob/8c5dcef63d847bb3d027ec74915d8fe4afProduct
https://github.com/ParisNeo/lollms-webui/security/advisories/GHSA-mcwr-5469-pxj4ExploitMitigationVendor Advisory
https://github.com/ParisNeo/lollms-webui/security/advisories/GHSA-mcwr-5469-pxj4ExploitMitigationVendor Advisory

FAQ

What is CVE-2026-33340?

CVE-2026-33340 is a vulnerability with a CVSS score of 9.1 (CRITICAL). 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 v...

How severe is CVE-2026-33340?

CVE-2026-33340 has been rated CRITICAL with a CVSS base score of 9.1/10. This is considered a critical vulnerability requiring immediate attention.

Is there a patch for CVE-2026-33340?

Check the references section above for vendor advisories and patch information. Affected products include: Lollms Lollms Web Ui.