CVE-2026-42544

{"id": "CVE-2026-42544", "cveTags": [], "metrics": {"cvssMetricV31": [{"type": "Secondary", "source": "security-advisories@github.com", "cvssData": {"scope": "UNCHANGED", "version": "3.1", "baseScore": 7.5, "attackVector": "NETWORK", "baseSeverity": "HIGH", "vectorString": "CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H", "integrityImpact": "NONE", "userInteraction": "NONE", "attackComplexity": "LOW", "availabilityImpact": "HIGH", "privilegesRequired": "NONE", "confidentialityImpact": "NONE"}, "impactScore": 3.6, "exploitabilityScore": 3.9}]}, "published": "2026-05-12T22:16:34.467", "references": [{"url": "https://github.com/emmett-framework/granian/security/advisories/GHSA-vrg7-482j-p6f6", "source": "security-advisories@github.com"}, {"url": "https://github.com/emmett-framework/granian/security/advisories/GHSA-vrg7-482j-p6f6", "source": "134c704f-9b21-4f2e-91b3-4a467353bcc0"}], "vulnStatus": "Deferred", "weaknesses": [{"type": "Secondary", "source": "security-advisories@github.com", "description": [{"lang": "en", "value": "CWE-20"}, {"lang": "en", "value": "CWE-248"}, {"lang": "en", "value": "CWE-400"}]}], "descriptions": [{"lang": "en", "value": "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."}], "lastModified": "2026-05-18T16:16:30.937", "sourceIdentifier": "security-advisories@github.com"}