CVE Tools
Sign in

CVE-2026-33340

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

Published: Mar 24, 2026Updated: Apr 20, 2026 Sources: CVE List NVDCWE-306
NVD MITRE
9.1CVSSCRITICAL
EPSS Score
21.6%
Top 2.7%
CISA KEV
Not in KEV
Exploits
No Known Exploits
Remediation
Workaround Only
Am I actually vulnerable?1 Nuclei template available — see how to check your systems. How to verify

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 Vector Breakdown

AV:NAC:LPR:NUI:NS:UC:HI:HA:N
Exploitability
AV:NAttack Vector
Network
AC:LAttack Complexity
Low
PR:NPrivileges Required
None
UI:NUser Interaction
None
Scope
S:UScope
Unchanged
Impact
C:HConfidentiality
High
I:HIntegrity
High
A:NAvailability
None
Open in CVSS calculator →

Weaknesses

CWE-306CWE-918

Affected Products

lollms-webuiParisNeo
On-prem
AI / ML / ai-agent-tooling
lollms web uilollms
On-premWeb App
AI / ML / ai-agent-tooling
parisneooss-projectAI / MLaka lollms-webui, lollms-web ui, lollms
lollmsoss-projectAI / ML

Attack Graph

Products CVE Techniques Tactics

Click technique nodes to view MITRE ATT&CK details. Scroll to zoom, drag to pan.

Exploitability

Workaround Available

MITRE ATT&CK

3 techniques
Command and Control
Initial Access
View detailed technique mapping

References

https://github.com/ParisNeo/lollms-webui/security/advisories/GHSA-mcwr-5469-pxj4
github.com
https://github.com/ParisNeo/lollms-webui/blob/8c5dcef63d847bb3d027ec74915d8fe4afd3014e/lollms/server/endpoints/lollms_apps.py#L443-L450
github.com

Timeline

Published
Mar 24, 2026
Last Updated
Apr 20, 2026

Unlock Complete Vulnerability Intelligence

Get the full picture for CVE-2026-33340 and every CVE in our database. Create a free account — no credit card required.

Create Free Account
Plain-language analysis
Impact assessment and exploitation scenario in plain English
Attack graph visualization
Interactive attack path and kill chain mapping
Exploit details & PoC links
ExploitDB, Metasploit, GitHub PoCs with direct links
Nuclei scanner templates
Ready-to-use vulnerability scanner templates
Full remediation guide
Patch instructions, workarounds, and compliance impact
Interactive AI chat
Ask questions about this vulnerability in natural language
Related vulnerabilities
Semantically similar CVEs and attack patterns
REST API & MCP access
Integrate vulnerability data into your workflows