CVE-2024-39936: Qt

Medium severity, CVSS 5.9. EPSS: 0.5% chance of exploitation in the next 30 days.

An issue was discovered in HTTP2 in Qt before 5.15.18, 6.x before 6.2.13, 6.3.x through 6.5.x before 6.5.7, and 6.6.x through 6.7.x before 6.7.3. Code to make security-relevant decisions about an established connection may execute too early, because the encrypted() signal has not yet been emitted and processed..

Affected products

• Qt Qt: before 5.15.18 (fixed in 5.15.18); from 6.0.0, before 6.2.13 (fixed in 6.2.13); from 6.3.0, before 6.5.7 (fixed in 6.5.7); from 6.6.0, before 6.7.3 (fixed in 6.7.3)

Published 2024-07-04. Last modified 2026-06-17.