Vulnerability in Lm-Sys Fastchat
CVE-2024-10907
In lm-sys/fastchat Release v0.2.36, the server fails to handle excessive characters appended to the end of multipart boundaries. This flaw can be exploited by sending malformed multipart requests with arbitrary characters at the end of the boundary. Each extra character is processed in an infinite loop, leading to excessive resource consumption and a complete denial of service (DoS) for all users. The vulnerability is unauthenticated, meaning no user login or interaction is required for an attacker to exploit this issue.
Published · last modified .
CVSS v3 metric
CVSS v3 base score 7.5 (High). Vector: CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H.
EPSS exploit prediction
EPSS: 0.007 (50.7th percentile), scored .
Very low probability of exploitation in the next 30 days; routine patching cadence is appropriate. 51st percentile — 50.7% of CVEs in the catalogue have a lower EPSS than this one. How to read EPSS.
EPSS over last 30 days · oldest: 0.007 · newest: 0.007 · change: +0.000
Affected products
- Lm-Sys Fastchat — versions 0.2.36
- Lm-Sys Lm-Sys/fastchat — versions unspecified
Weakness classification (CWE)
References
- huntr.com/bounties/bf3ca81d-3508-4455-95d9-0b653e46d6e4 (Exploit, Third Party Advisory)
Frequently asked questions
- What is CVE-2024-10907?
- CVE-2024-10907 is a high-severity vulnerability in Lm-Sys Fastchat, classified under Loop with Unreachable Exit Condition (Infinite Loop). CVSS score: 7.5/10. Published 2025-03-20.
- How severe is CVE-2024-10907?
- High severity. CVSS v3 base score is 7.5 out of 10.