TI-2021-09353 Aliases CVE-2021-28117 GHSA-vr8p-gg49-j8hx

libdiscover/backends/KNSBackend/KNSResource.cpp in KDE Discover before 5.21.3…

MEDIUM 42Published 2021-03-20 · Updated 2024-10-15

Key facts

Attack vector: Network
Privileges required: None
User interaction: None
Attack complexity: Low
Impact type: —
Confidentiality · integrity · availability: None · High · None
Fix status: No fix listed

Attack profile from CVSS 3.1 · CISA ADP. Fix status from CNA.

Summary

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.)

Why it matters now

Exploitation None reported CISA SSVC · not in CISA KEV

EPSS 0.01563 75th percentileScored 2026-11-07

Fix No fix listed No fixed version in the sources yet

SSVC decision points

CISA ADP · SSVC 2.0.3

Exploitation: None
Automatable: Yes
Technical impact: Partial

The decision (Track, Attend, Act) also depends on your mission and well-being impact; see CISA's SSVC guide.

Affected products

Vendor	Product	Affected versions	Fixed in	Status	Source
—	—	all versions	—	No fix listed	CNA

— Vendor— Affected all versions Fixed in — No fix listed CNA

CPE configurations NVD · 1

CPE	Versions	Role	Vendor
cpe:2.3:a:kde:discover::::::::	before 5.21.3	Vulnerable	KDE

cpe:2.3:a:kde:discover:*:*:*:*:*:*:*:* Versions before 5.21.3 Vulnerable ·KDE

Remediation

No fixed version listed by the sources yet.

Vendor assessments

Red Hat

Red Hat's page for this CVE →

Not affected: 1 product

Red Hat

Timeline

2026-10-02 Threatist record created from CVE-2021-28117
2026-10-03 Alias added: GHSA-vr8p-gg49-j8hx

References

Patch 3

Advisory 2

Sources

This product uses the NVD API but is not endorsed or certified by the NVD. Sources and licences