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An issue was discovered in Qt before 5.15.14 6.x before 6.2.9 and 6.3.x through 6.5.x before 6.5.1. Qt Network incorrectly parses the strict-transport-security (HSTS) header allowing unencrypted connections to be established even when explicitly prohibited by the server. This happens if the case used for this header does not exactly match.

🗓️ 30 May 2023 07:00:00Reported by MicrosoftType 
mscve
 mscve
🔗 msrc.microsoft.com👁 3 Views

Qt misparses Strict Transport Security header enabling unencrypted connections if case differs.

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28 Jun 2023 07:00Current
6.2Medium risk
Vulners AI Score6.2
CVSS 3.15.3
EPSS0.00137
SSVC
3