CVE-2026-4438 Affecting glibc package, versions <2.36-9+deb12u14


Severity

Recommended
low

Based on default assessment until relevant scores are available.

Threat Intelligence

EPSS
0.32% (24th percentile)

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  • Snyk IDSNYK-ECHOLATEST-GLIBC-18610887
  • published11 Aug 2026
  • disclosed20 Mar 2026

Introduced: 20 Mar 2026

CVE-2026-4438  (opens in a new tab)

How to fix?

Upgrade Echo:latest glibc to version 2.36-9+deb12u14 or higher.

NVD Description

Note: Versions mentioned in the description apply only to the upstream glibc package and not the glibc package as distributed by Echo. See How to fix? for Echo:latest relevant fixed versions and status.

Calling gethostbyaddr or gethostbyaddr_r with a configured nsswitch.conf that specifies the library's DNS backend in the GNU C library version 2.34 to version 2.43 could result in an invalid DNS hostname being returned to the caller in violation of the DNS specification.

CVSS Base Scores

version 3.1