CVE-2026-6607

MEDIUM EPSS 45.4%
Published Apr 20, 20262mo ago · Modified Jun 17, 20261w ago
5.5 CVSS 4.0
Medium
Find Similar
Published Apr 20, 2026 2mo ago
Last Modified Jun 17, 2026 1w ago

Description

A security vulnerability has been detected in lm-sys fastchat up to 0.2.36. This issue affects the function api_generate of the component Worker API Endpoint. The manipulation leads to resource consumption. The attack can be initiated remotely. The exploit has been disclosed publicly and may be used. The identifier of the patch is c9e84b89c91d45191dc24466888de526fa04cf33. It is suggested to install a patch to address this issue. Commit ff66426 patched this issue in api_generate of base_model_worker.py and did miss other entry points.

CVSS Details

Base Score
5.5
Exploitability
—
Impact
—
Vector string
CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:N/VI:N/VA:L/SC:N/SI:N/SA:N/E:P/CR:X/IR:X/AR:X/MAV:X/MAC:X/MAT:X/MPR:X/MUI:X/MVC:X/MVI:X/MVA:X/MSC:X/MSI:X/MSA:X/S:X/AU:X/R:X/V:X/RE:X/U:X
Attack Vector Network
Attack Complexity Low
Privileges Required None
User Interaction None
Scope X

Threat Intelligence

EPSS Exploit Probability
45.4% percentile
Exploit & Patch Status
No Known Exploit
No Patch Available

Weaknesses 2

CWE-400 Uncontrolled Resource Consumption Resource Mgmt
CWE-404

References 8

  • gist.github.com https://gist.github.com/YLChen-007/87216a2d97a882d619e11dc67cd473b5
  • github.com https://github.com/lm-sys/FastChat/
  • github.com https://github.com/lm-sys/FastChat/commit/c9e84b89c91d45191dc24466888de526fa04cf33
  • github.com https://github.com/lm-sys/FastChat/issues/3833
  • github.com https://github.com/lm-sys/FastChat/pull/3835
  • vuldb.com https://vuldb.com/submit/792227
  • vuldb.com https://vuldb.com/vuln/358242
  • vuldb.com https://vuldb.com/vuln/358242/cti

Remediation

No remediation data recorded yet

Check vendor advisories and the NVD entry for patch availability.