CVE-2026-4890
7.5
HIGH
CVSS 3.1
EPSS 7.2%
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—upgrade to 2.85-1+deb11u2 or later
Is CVE-2026-4890 being exploited?
Moderate — EPSS is 7.2%. Track this CVE but it's not at the top of the prioritisation list.
Affected packages (2)
- from 0, < 2.91-r1
- from 0, < 2.85-1+deb11u2
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 |