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CVE-2026-6607

MEDIUM

5.3

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.

CVE Details

CVSS v3.1 Score5.3

SeverityMEDIUM

CVSS VectorCVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:L

Attack VectorNETWORK

ComplexityLOW

Privileges RequiredNONE

User InteractionNONE

Published4/20/2026

Last Modified4/22/2026

Sourcenvd

Honeypot Sightings0

Weaknesses (CWE)

CWE-400CWE-404

References

https://gist.github.com/YLChen-007/87216a2d97a882d619e11dc67cd473b5(cna@vuldb.com)

https://github.com/lm-sys/FastChat/(cna@vuldb.com)

https://github.com/lm-sys/FastChat/commit/c9e84b89c91d45191dc24466888de526fa04cf33(cna@vuldb.com)

https://github.com/lm-sys/FastChat/issues/3833(cna@vuldb.com)

https://github.com/lm-sys/FastChat/pull/3835(cna@vuldb.com)

https://vuldb.com/submit/792227(cna@vuldb.com)

https://vuldb.com/vuln/358242(cna@vuldb.com)

https://vuldb.com/vuln/358242/cti(cna@vuldb.com)

IOC Correlations

No correlations recorded

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