Remote Code Execution due to LFI in '/install_extension' in parisneo/lollms-webui

published 2024-06-06 2 y ago modified 2026-06-17 4 mo ago also EUVD-2024-43963

cvss: 9.8; version 3.0, CNA
cisa kev: Not listed; not in CISA's catalog
epss: 34.4%; EPSS 34.4% chance of exploitation in 30 days, percentile 98%
public exploits: 0; none known

A remote code execution (RCE) vulnerability exists in the '/install_extension' endpoint of the parisneo/lollms-webui application, specifically within the `@router.post("/install_extension")` route handler. The vulnerability arises due to improper handling of the `name` parameter in the `ExtensionBuilder().build_extension()` method, which allows for local file inclusion (LFI) leading to arbitrary code execution. An attacker can exploit this vulnerability by crafting a malicious `name` parameter that causes the server to load and execute a `__init__.py` file from an arbitrary location, such as the upload directory for discussions. This vulnerability affects the latest version of parisneo/lollms-webui and can lead to remote code execution without requiring user interaction, especially when the application is exposed to an external endpoint or operated in headless mode.

CISA SSVC

Exploitation: Proof of concept is public
Automatable: yes
Technical impact: total
Assessed: 2 y ago (2024-06-07)

Exploit prediction

34.35% chance of exploitation in the next 30 days, higher than 98% of all scored CVEs (FIRST EPSS, 2026-11-08).

Exploits and checks

huntr.com https://huntr.com/bounties/d6564f04-0f59-4686-beb2-11659342279b referenced PoC, tagged "exploit" by a source, unverified

CVSS scores

assigned by	version	score	vector
CNA	3.0	9.8	CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
NVD	3.1	9.8	CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H

Affected products

parisneo parisneo/lollms-webui
parisneo lollms

Classification

Weakness

CWE-29 Path Traversal: '\..\filename'
CWE-22 Improper Limitation of a Pathname to a Restricted Directory

References

huntr.com /bounties/d6564f04-0f59-4686-beb2-11659342279b
exploit, third-party-advisory

Sources

CVE List CVE-2024-4320
NVD CVE-2024-4320

Fencer Vulns keeps one entry per vulnerability: the CVE id wins, then GHSA, and records that alias each other are merged, except that two CVEs always keep separate entries. The same data is available as JSON.

Summary