Improper Input Validation Affecting reflex package, versions <0.9.3-r0
Threat Intelligence
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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- published31 May 2026
- disclosed12 May 2026
Introduced: 12 May 2026
CVE-2026-42544 (opens in a new tab)How to fix?
Upgrade Wolfi reflex to version 0.9.3-r0 or higher.
NVD Description
Note: Versions mentioned in the description apply only to the upstream reflex package and not the reflex package as distributed by Wolfi.
See How to fix? for Wolfi relevant fixed versions and status.
Granian is a Rust HTTP server for Python applications. From 1.2.0 to 2.7.4, Granian aborts a worker process when an unauthenticated client sends a WebSocket upgrade request whose Sec-WebSocket-Protocol header contains non-ASCII bytes. The crash happens in Granian's WebSocket scope construction path, before the ASGI application is invoked. This vulnerability is fixed in 2.7.4.