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TI-2024-10750 Aliases CVE-2024-11603GHSA-h254-g997-685c

Server-Side Request Forgery in lm-sys/fastchat

Priority HIGH 72CWE-918Published · Updated

Key facts

Attack vector
Network
Privileges required
None
User interaction
None
Attack complexity
Low
Impact type
Information disclosure
Confidentiality · integrity · availability
High · None · None
Fix status
No fix listed

Attack profile from CVSS 3.0 · CNA. Fix status from CNA and GitHub. Impact type from CWE-918 and the CVSS impact.

Summary

A Server-Side Request Forgery (SSRF) vulnerability exists in lm-sys/fastchat version 0.2.36. The vulnerability is present in the `/queue/join?` endpoint, where insufficient validation of the path parameter allows an attacker to send crafted requests. This can lead to unauthorized access to internal networks or the AWS metadata endpoint, potentially exposing sensitive data and compromising internal servers.

Why it matters now

Exploitation Proof of concept CISA SSVC · not in CISA KEV
EPSS 0.007 53rd percentileScored 2026-11-07
Public exploit Yes 1 exploit referenceTagged by NVD
Fix No fix listed No fixed version in the sources yet

SSVC decision points

CISA ADP · SSVC 2.0.3

Exploitation
Poc
Automatable
Yes
Technical impact
Partial

The decision (Track, Attend, Act) also depends on your mission and well-being impact; see CISA's SSVC guide.

Affected products

VendorProductAffected versionsFixed inStatusSource
lm-syslm-sys/fastchatup to latest—No fix listedCNA
—fschat (PyPI)up to 0.2.36—No fix listedGHSA-h254-g997-685c
  • lm-sys/fastchat Vendorlm-sys Affected up to latest Fixed in — No fix listed CNA
  • fschat (PyPI) Vendor— Affected up to 0.2.36 Fixed in — No fix listed GHSA-h254-g997-685c

CPE configurations NVD · 1

CPEVersionsRoleVendor
cpe:2.3:a:lm-sys:fastchat:0.2.36:*:*:*:*:*:*:*0.2.36Vulnerablelm-sys
  • cpe:2.3:a:lm-sys:fastchat:0.2.36:*:*:*:*:*:*:* Versions 0.2.36 Vulnerable ·lm-sys

Remediation

No fixed version listed by the sources yet.

Timeline

  1. 2026-10-02 Threatist record created from CVE-2024-11603
  2. 2026-10-03 Alias added: GHSA-h254-g997-685c

References

Exploit 1

Advisory 1

Other 1

  • TI-2024-09320 SSRF in POST /worker_generate_stream API endpoint in lm-sys/fastchat CVSS 3.0CRITICAL 9.3
  • TI-2024-11482 Server Side Request Forgery in lm-sys/fastchat CVSS 3.0HIGH 7.5
  • TI-2024-10115 Denial of Service in lm-sys/fastchat CVSS 3.0HIGH 7.5
  • TI-2024-10111 Denial of Service (DoS) via Multipart Boundary in lm-sys/fastchat CVSS 3.0HIGH 7.5
  • TI-2024-10112 Open Redirect in lm-sys/fastchat CVSS 3.0MEDIUM 6.1

Sources

This product uses the NVD API but is not endorsed or certified by the NVD. Sources and licences