Description
QAbstractOAuth in Qt Network Authorization in Qt before 5.15.17, 6.x before 6.2.13, 6.3.x through 6.5.x before 6.5.6, and 6.6.x through 6.7.x before 6.7.1 uses only the time to seed the PRNG, which may result in guessable values.
Fixed in Linux distributions
Distributions backport fixes, so the version that fixes this vulnerability differs per release — upgrade to at least the version shown. From the distributions' security trackers and advisories.
Debian
Security tracker ↗| Release | Package | Fixed in | Advisory |
|---|---|---|---|
| Debian 14 | qt6-networkauth | 6.7.2-2 | — |
| Debian 14 | qtnetworkauth-everywhere-src | 5.15.13-3 | — |
| Debian 13 | qt6-networkauth | 6.7.2-2 | — |
| Debian 13 | qtnetworkauth-everywhere-src | 5.15.13-3 | — |
| Debian 12 | qt6-networkauth +1 | No fix yet | — |
Ubuntu
Security tracker ↗| Release | Package | Fixed in | Advisory |
|---|---|---|---|
| Ubuntu 26.10 | qtnetworkauth-everywhere-src | No fix yet | — |
| Ubuntu 26.04 LTS | qtnetworkauth-everywhere-src | No fix yet | — |
| Ubuntu 25.10 | qtnetworkauth-everywhere-src | No fix yet | — |
| Ubuntu 24.04 LTS | qtnetworkauth-everywhere-src | No fix yet | — |
| Ubuntu 22.04 LTS | qtnetworkauth-everywhere-src | No fix yet | — |
Show 1 more (older releases, extended support, other products)Fewer releases
| Release | Package | Fixed in | Advisory |
|---|---|---|---|
| Ubuntu 20.04 LTS | qtnetworkauth-everywhere-src | No fix yet | — |
SUSE
Security tracker ↗| Release | Package | Fixed in | Advisory |
|---|---|---|---|
| SUSE Package Hub 15 SP5 | libqt5-qtnetworkauth | 5.15.2+kde2-bp155.3.3.1 | openSUSE-SU-2024:0143-1 |
| SUSE Package Hub 15 SP5 | qt6-networkauth +1 | 6.4.2-bp155.2.3.1 | openSUSE-SU-2024:0138-1 |
openSUSE
Security tracker ↗| Release | Package | Fixed in | Advisory |
|---|---|---|---|
| openSUSE Leap 15.5 | libqt5-qtnetworkauth | 5.15.2+kde2-bp155.3.3.1 | openSUSE-SU-2024:0143-1 |
| openSUSE Leap 15.5 | qt6-networkauth +1 | 6.4.2-bp155.2.3.1 | openSUSE-SU-2024:0138-1 |
Advisories 2
- openSUSE-SU-2024:0143-1 Security update for libqt5-qtnetworkauth SUSE / openSUSE Security Updates · Feb 4, 2026
- openSUSE-SU-2024:0138-1 Security update for qt6-networkauth SUSE / openSUSE Security Updates · Feb 4, 2026
References
- https://codereview.qt-project.org/c/qt/qtnetworkauth/+/560317
- https://codereview.qt-project.org/c/qt/qtnetworkauth/+/560368
- FEDORA-2024-3936682805 vendor-advisory
- FEDORA-2024-bfb8617ba3 vendor-advisory
- FEDORA-2024-2e27372d4c vendor-advisory