Server-Side Request Forgery Vulnerability in LoLLMs WEBUI by ParisNeo
CVE-2026-33340

9.1CRITICAL

Key Information:

Vendor

Parisneo

Status
Lollms-webui
Vendor
CVE Published:
24 March 2026

Badges

👾 Exploit Exists🟡 Public PoC

What is CVE-2026-33340?

A significant vulnerability exists in LoLLMs WEBUI, allowing unauthenticated attackers to exploit the @router.post("/api/proxy") endpoint. This SSRF vulnerability enables unauthorized access to internal services, network scanning, and potentially exfiltration of sensitive cloud metadata, including AWS or GCP IAM tokens. As of the latest update, no patches have been released to mitigate this risk.

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Affected Version(s)

lollms-webui <= 8c5dcef63d847bb3d027ec74915d8fe4afd3014e

Exploit Proof of Concept (PoC)

PoC code is written by security researchers to demonstrate the vulnerability can be exploited. PoC code is also a key component for weaponization which could lead to ransomware.

CVE-2026-33340
Created by regaan

References

https://github.com/ParisNeo/lollms-webui/security/advisor...
x_refsource_CONFIRM
https://github.com/ParisNeo/lollms-webui/blob/8c5dcef63d8...
x_refsource_MISC

CVSS V3.1

Score:
9.1
Severity:
CRITICAL
Confidentiality:
High
Integrity:
High
Availability:
High
Attack Vector:
Network
Attack Complexity:
Low
Privileges Required:
None
User Interaction:
None
Scope:
Unchanged

Timeline

  • 🟡

    Public PoC available

  • 👾

    Exploit known to exist

  • Vulnerability published

  • Vulnerability Reserved

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