Improper Input Validation Affecting boazsegev/facil.io 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-UNMANAGED-BOAZSEGEVFACILIO-18305979
- published25 Jul 2026
- disclosed23 Jul 2026
- creditUnknown
Introduced: 23 Jul 2026
CVE-2026-16632 (opens in a new tab)How to fix?
There is no fixed version for boazsegev/facil.io.
Overview
Affected versions of this package are vulnerable to Improper Input Validation via the websocket_on_protocol_error function. An attacker can manipulate the on_message argument to bypass input validation and potentially compromise confidentiality, integrity, and availability by sending specially crafted WebSocket frames remotely.