CVE-2021-28117

HIGH
Published Mar 20, 20215y ago · Modified Jun 17, 20262w ago
7.5 CVSS 3.1
High
Find Similar
Published Mar 20, 2021 5y ago
Last Modified Jun 17, 2026 2w ago

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.)

CVSS Details

Base Score
7.5
Exploitability
3.9
Impact
3.6
Vector string
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:H/A:N
Attack Vector Network
Attack Complexity Low
Privileges Required None
User Interaction None
Scope Unchanged
Confidentiality None
Integrity High
Availability None

Threat Intelligence

No active exploitation signals — not in CISA KEV and no EPSS score yet.

Exploit & Patch Status
No Known Exploit
Patch Available

Affected Products 1

VendorProductVersionRange
kdediscover* <5.21.3

References 5

  • github.com https://github.com/KDE/discover/commit/fcd3b30552bf03a384b1a16f9bb8db029c111356
    Patch
  • github.com https://github.com/KDE/discover/releases
    Third Party Advisory
  • invent.kde.org https://invent.kde.org/plasma/discover/commit/94478827aab63d2e2321f0ca9ec5553718798e60
    PatchThird Party Advisory
  • kde.org https://kde.org/info/security/advisory-20210310-1.txt
    PatchVendor Advisory
  • userbase.kde.org https://userbase.kde.org/Discover
    ProductVendor Advisory

Remediation

  • github.com https://github.com/KDE/discover/commit/fcd3b30552bf03a384b1a16f9bb8db029c111356
    Patch
  • invent.kde.org https://invent.kde.org/plasma/discover/commit/94478827aab63d2e2321f0ca9ec5553718798e60
    PatchThird Party Advisory
  • kde.org https://kde.org/info/security/advisory-20210310-1.txt
    PatchVendor Advisory