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.

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.

EPSS: 0.006 (47.1th percentile) — read the EPSS interpretation.

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.

Affected products

Lm-sys Fastchat — versions 0.2.36
Lm-sys Lm-sys/fastchat — versions unspecified

Weakness classification (CWE)

CWE-835 — Loop with Unreachable Exit Condition (Infinite Loop)

References

security@huntr.dev (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.