CVE-2024-8736: Denial of Service (DoS) via Multipart Boundary in parisneo/lollms-webui
Description
A Denial of Service (DoS) vulnerability exists in multiple file upload endpoints of parisneo/lollms-webui version V12 (Strawberry). The vulnerability can be exploited remotely via Cross-Site Request Forgery (CSRF). Despite CSRF protection preventing file uploads, the application still processes multipart boundaries, leading to resource exhaustion. By appending additional characters to the multipart boundary, an attacker can cause the server to parse each byte of the boundary, ultimately leading to service unavailability. This vulnerability is present in the `/upload_avatar`, `/upload_app`, and `/upload_logo` endpoints.
Classification
CVE ID: CVE-2024-8736
CVSS Base Severity: HIGH
CVSS Base Score: 7.1
CVSS Vector: CVSS:3.0/AV:N/AC:L/PR:N/UI:R/S:U/C:N/I:L/A:H
Problem Types
CWE-400 Uncontrolled Resource ConsumptionAffected Products
Vendor: parisneo
Product: parisneo/lollms-webui
Exploit Prediction Scoring System (EPSS)
EPSS Score: 0.02% (probability of being exploited)
EPSS Percentile: 3.21% (scored less or equal to compared to others)
EPSS Date: 2025-04-18 (when was this score calculated)
References
https://nvd.nist.gov/vuln/detail/CVE-2024-8736https://huntr.com/bounties/935dbc03-1b43-4dbb-b6cd-1aa95a789d4f