CVE-2026-6607

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 v3 5.3 MEDIUM
CVSS v2.0 5.0 MEDIUM

5.3^/10

CVSS v3 : MEDIUM

Vector :

Exploitability : 3.9 / Impact : 1.4

Attack Vector NETWORK

Attack Complexity LOW

Privileges Required NONE

User Interaction NONE

Confidentiality Impact NONE

Integrity Impact NONE

Availability Impact LOW

Scope UNCHANGED

5.0^/10

CVSS v2.0 : MEDIUM

Vector : AV:N/AC:L/Au:N/C:N/I:N/A:P

Exploitability : 10.0 / Impact : 2.9

Access Vector NETWORK

Access Complexity LOW

Authentication NONE

Confidentiality Impact NONE

Integrity Impact NONE

Availability Impact PARTIAL

References

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

Configurations

No configuration.

History

20 Apr 2026, 05:16

Type	Values Removed	Values Added
New CVE

Information

Published : 2026-04-20 05:16

Updated : 2026-04-22 20:22

NVD link : CVE-2026-6607

Mitre link : CVE-2026-6607

CVE.ORG link : CVE-2026-6607

JSON object : View

Products Affected

No product.

CWE

CWE-400

Uncontrolled Resource Consumption

CWE-404

Improper Resource Shutdown or Release

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