Improper Input Validation Affecting dnsmasq-utils package, versions <0:2.79-36.el8_10


Severity

Recommended
high

Based on Red Hat Enterprise Linux security rating.

Threat Intelligence

EPSS
2.68% (84th percentile)

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  • Snyk IDSNYK-RHEL8-DNSMASQUTILS-16700401
  • published15 May 2026
  • disclosed9 May 2026

Introduced: 9 May 2026

CVE-2026-4893  (opens in a new tab)
CWE-20  (opens in a new tab)

How to fix?

Upgrade RHEL:8 dnsmasq-utils to version 0:2.79-36.el8_10 or higher.
This issue was patched in RHSA-2026:20589.

NVD Description

Note: Versions mentioned in the description apply only to the upstream dnsmasq-utils package and not the dnsmasq-utils package as distributed by RHEL. See How to fix? for RHEL:8 relevant fixed versions and status.

An information disclosure vulnerability in dnsmasq allows remote attackers to bypass source checks via a crafted DNS packet with RFC 7871 client subnet information.

CVSS Base Scores

version 3.1