PT-2026-51573 · Gnu+2 · Libidn+2

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CVE-2026-57053

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Published

2026-06-23

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Updated

2026-09-04

CVSS v3.1

4.0

Medium

VectorAV:L/AC:H/PR:N/UI:N/S:U/C:N/I:L/A:L
Name of the Vulnerable Software and Affected Versions GNU libidn versions prior to 1.44
Description An issue exists in the ToUnicode APIs due to mishandling in the idna to unicode internal() function, which can lead to out-of-bounds reads of uninitialized memory.
Recommendations Update to version 1.44 or later.

Exploit

Fix

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Weakness Enumeration

Related Identifiers

CVE-2026-57053
ECHO-F940-3352-DC67
JLSEC-2026-667
OESA-2026-2932
OESA-2026-2933
OESA-2026-2934
OESA-2026-2935
OESA-2026-2983
OPENSUSE-SU-2026:21758-1
RHSA-2026:42125
USN-8521-1

Affected Products

Linuxmint
Ubuntu
Libidn