Instituto Nacional de ciberseguridad. Sección Incibe
Instituto Nacional de Ciberseguridad. Sección INCIBE-CERT

CVE-2026-8463

Gravedad CVSS v3.1:
MEDIA
Tipo:
No Disponible / Otro tipo
Fecha de publicación:
13/05/2026
Última modificación:
13/05/2026

Descripción

*** Pendiente de traducción *** Crypt::Argon2 versions from 0.017 before 0.031 for Perl perform a heap out-of-bounds read in argon2_verify on empty encoded input.<br /> <br /> The auto-detect form of argon2_verify passes encoded_len - 1 as the length argument to memchr without checking that encoded_len is non-zero. When the encoded string is empty, the size_t subtraction underflows to SIZE_MAX and memchr scans adjacent heap memory looking for a &amp;#39;$&amp;#39; separator byte.<br /> <br /> A caller that invokes argon2_verify against a stored hash that may legitimately be empty (for example a placeholder row or a NULL column materialised as an empty string) reads out-of-bounds heap memory, which can crash the process or leak the position of an adjacent &amp;#39;$&amp;#39; byte into subsequent parsing.

Productos y versiones vulnerables

CPE Desde Hasta
cpe:2.3:a:leont:crypt\:\:argon2:*:*:*:*:*:perl:*:* 0.017 (incluyendo) 0.031 (excluyendo)