Out-of-bounds Read Affecting libidn package, versions *


Severity

Recommended
medium

Based on Red Hat Enterprise Linux security rating.

Threat Intelligence

EPSS
0.14% (3rd percentile)

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  • Snyk IDSNYK-RHEL6-LIBIDN-18502819
  • published1 Aug 2026
  • disclosed23 Jun 2026

Introduced: 23 Jun 2026

CVE-2026-57053  (opens in a new tab)
CWE-125  (opens in a new tab)

How to fix?

There is no fixed version for RHEL:6 libidn.

NVD Description

Note: Versions mentioned in the description apply only to the upstream libidn package and not the libidn package as distributed by RHEL. See How to fix? for RHEL:6 relevant fixed versions and status.

GNU libidn before 1.44 is prone to out-of-bounds reads of uninitialized memory in the ToUnicode APIs because of mishandling in idna_to_unicode_internal. The affected code is not present in libidn2.

CVSS Base Scores

version 3.1