CVE-2026-57053

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 v3 4.0 MEDIUM

4.0^/10

CVSS v3 : MEDIUM

Vector :

Exploitability : 1.4 / Impact : 2.5

Attack Vector LOCAL

Attack Complexity HIGH

Privileges Required NONE

User Interaction NONE

Confidentiality Impact NONE

Integrity Impact LOW

Availability Impact LOW

Scope UNCHANGED

References

Link	Resource
https://lists.gnu.org/archive/html/help-libidn/2026-05/msg00000.html	Exploit Mailing List
https://lists.gnu.org/archive/html/help-libidn/2026-06/msg00001.html	Mailing List

Configurations

Configuration 1 (hide)

cpe:2.3:a:gnu:libidn:*:*:*:*:*:*:*:*

History

No history.

Information

Published : 2026-06-23 18:18

Updated : 2026-06-29 19:40

NVD link : CVE-2026-57053

Mitre link : CVE-2026-57053

CVE.ORG link : CVE-2026-57053

JSON object : View

Products Affected

gnu

libidn

CWE

CWE-1284

Improper Validation of Specified Quantity in Input

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