CVE-2026-19499 Affecting glibc-langpack-gd package, versions <0:2.39-142.el10_2.alma.1


Severity

Recommended
medium

Based on AlmaLinux security rating.

Threat Intelligence

EPSS
0.3% (20th percentile)

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  • Snyk IDSNYK-ALMALINUX10-GLIBCLANGPACKGD-20727630
  • published10 Oct 2026
  • disclosed6 Oct 2026

Introduced: 6 Oct 2026

NewCVE-2026-19499  (opens in a new tab)

How to fix?

Upgrade AlmaLinux:10 glibc-langpack-gd to version 0:2.39-142.el10_2.alma.1 or higher.
This issue was patched in ALSA-2026:76781.

NVD Description

Note: Versions mentioned in the description apply only to the upstream glibc-langpack-gd package and not the glibc-langpack-gd package as distributed by AlmaLinux. See How to fix? for AlmaLinux:10 relevant fixed versions and status.

Calling strfmon and strfmon_l in the GNU C Library version 2.38 to 2.44 can write past the end of the caller-supplied output buffer when a conversion uses right-justified width padding.

Exploitation requires an application code path that calls strfmon or strfmon_l with right-justified width padding into a destination buffer that is large enough for the padding to succeed but too small for the internal memmove call. The field width or format may be attacker-influenced or a fixed susceptible pattern in the caller.

At the time of publication, no network-facing application impact is known.

CVSS Base Scores

version 3.1