CVE-2021-28117
Publication date 20 March 2021
Last updated 26 August 2025
Ubuntu priority
Description
libdiscover/backends/KNSBackend/KNSResource.cpp in KDE Discover before 5.21.3 automatically creates links to potentially dangerous URLs (that are neither https:// nor http://) based on the content of the store.kde.org web site. (5.18.7 is also a fixed version.)
Status
| Package | Ubuntu Release | Status |
|---|---|---|
| plasma-discover | 26.04 LTS resolute |
Fixed 5.21.3-0ubuntu1
|
| 25.10 questing |
Fixed 5.21.3-0ubuntu1
|
|
| 24.04 LTS noble |
Fixed 5.21.3-0ubuntu1
|
|
| 22.04 LTS jammy |
Fixed 5.21.3-0ubuntu1
|
|
| 20.04 LTS focal | Ignored end of standard support, was needs-triage | |
| 18.04 LTS bionic | Ignored end of standard support, was needs-triage | |
| 16.04 LTS xenial | Ignored end of standard support, was needs-triage | |
| 14.04 LTS trusty | Not in release |
Severity score breakdown
| Parameter | Value |
|---|---|
| Base score |
7.5 · High
|
| Attack vector | Network |
| Attack complexity | Low |
| Privileges required | None |
| User interaction | None |
| Scope | Unchanged |
| Confidentiality | None |
| Integrity impact | High |
| Availability impact | None |
| Vector | CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:H/A:N |