CVE-2024-10044: SSRF in POST /worker_generate_stream API endpoint in lm-sys/fastchat

Severity: critical (CVSS 9.3 v3.0)
Exploited in the wild: not listed in CISA KEV
EPSS: 0.5% probability of exploitation in the next 30 days
Public exploit or detection template: yes
Published: 2024-12-30 · updated 2026-06-17
Weakness: CWE-918

Description

A Server-Side Request Forgery (SSRF) vulnerability exists in the POST /worker_generate_stream API endpoint of the Controller API Server in lm-sys/fastchat, as of commit e208d5677c6837d590b81cb03847c0b9de100765. This vulnerability allows attackers to exploit the victim controller API server's credentials to perform unauthorized web actions or access unauthorized web resources by combining it with the POST /register_worker endpoint.

Affected products

lm-sys/fastchat: 2024-09-23

References

https://huntr.com/bounties/44633540-377d-4ac4-b3a3-c2d0fa19d0e6

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