CVE-2026-57053

LowCVSS 2.5/10Last modified Jun 29, 2026

Description

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.

Metrics

CVSS 3.1 2.5/10CVSS:3.1/AV:L/AC:H/PR:L/UI:N/S:U/C:N/I:L/A:N

Weakness enumeration

CWE-1284

Affected software

Vendor	Product	Versions
GNU	libidn	< 1.44

References

https://lists.gnu.org/archive/html/help-libidn/2026-05/msg00000.htmlExploit, Mailing List
https://lists.gnu.org/archive/html/help-libidn/2026-06/msg00001.htmlMailing List

Timeline

Published: Jun 23, 2026
Last modified: Jun 29, 2026
NVD status: Analyzed

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