PT-2026-51573 · Gnu · Libidn

Published 2026-06-23 · Updated 2026-06-23 · CVE-2026-57053

NVD

CVSS v3.1

4.0

Medium

Base vector

AV:L/AC:H/PR:N/UI:N/S:U/C:N/I:L/A:L

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.

Fix

Weakness Enumeration

CWE-1284

Related Identifiers

CVE-2026-57053

Affected Products

Libidn

References · 3

• https://nvd.nist.gov/vuln/detail/CVE-2026-57053 · Security Note
• https://lists.gnu.org/archive/html/help-libidn/2026-05/msg00000.html · Note
• https://lists.gnu.org/archive/html/help-libidn/2026-06/msg00001.html · Note