Incorrect Synchronization Affecting fschat package, versions [0,]
Threat Intelligence
Snyk has a proof-of-concept or detailed explanation of how to exploit this vulnerability.
The probability is the direct output of the EPSS model, and conveys an overall sense of the threat of exploitation in the wild. The percentile measures the EPSS probability relative to all known EPSS scores. Note: This data is updated daily, relying on the latest available EPSS model version. Check out the EPSS documentation for more details.
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Test your applications- Snyk IDSNYK-PYTHON-FSCHAT-16301528
- published27 Apr 2026
- disclosed20 Apr 2026
- creditUnknown
Introduced: 20 Apr 2026
NewCVE-2026-6607 (opens in a new tab)How to fix?
A fix was pushed into the master branch but not yet published.
Overview
fschat is an An open platform for training, serving, and evaluating large language model based chatbots.
Affected versions of this package are vulnerable to Incorrect Synchronization in the form of synchronous invocation of the api_generate() and generate_gate() functions in the Worker API. An attacker can deny service to all other threads on the affected worker by sending a blocking request.