CVE-2026-4890
7.5
HIGH
CVSS 3.1
EPSS 0.24%
Description
A Denial of Service (DoS) vulnerability in the DNSSEC validation of dnsmasq allows remote attackers to cause a denial of service via a crafted DNS packet.
How to fix CVE-2026-4890
To remediate CVE-2026-4890, upgrade the affected package to a fixed version below.
- Alpine/dnsmasq—upgrade to 2.91-r1 or later
- Debian/dnsmasq—no fix listed
Is CVE-2026-4890 being exploited?
Low — EPSS is 0.2%, meaning exploitation activity has not been observed at scale.
Affected packages (2)
- from 0, < 2.91-r1
- from 0
CVSS scores
| Source | Version | Severity | Vector |
|---|---|---|---|
| osv | CVSS 3.1 | HIGH7.5 | CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H |