CVE-2026-42544
Deferred Deferred - Pending Action
BaseFortify

Publication date: 2026-05-12

Last updated on: 2026-05-18

Assigner: GitHub, Inc.

Description
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.
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Meta Information
Published
2026-05-12
Last Modified
2026-05-18
Generated
2026-06-10
EPSS Evaluated
2026-06-08
NVD
CVE-2026-42544
Affected Vendors & Products
Currently, no data is known.
Helpful Resources
Exploitability
CWE
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KEV
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CWE ID Description
CWE-248 An exception is thrown from a function, but it is not caught.
CWE-20 The product receives input or data, but it does not validate or incorrectly validates that the input has the properties that are required to process the data safely and correctly.
CWE-400 The product does not properly control the allocation and maintenance of a limited resource.
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