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

CVE-2026-11979

Gravedad CVSS v4.0:
BAJA
Tipo:
CWE-121 Desbordamiendo de búfer basado en pila (Stack)
Fecha de publicación:
29/06/2026
Última modificación:
30/06/2026

Descripción

*** Pendiente de traducción *** libxml2 is vulnerable to multiple stack-based buffer overflows in the xmlcatalog utility when running in --shell mode. The usershell() function processes user input using fixed-size stack buffers without proper bounds checking.<br /> By supplying an overly long input line, an attacker can overflow internal buffers (command, arg, and argv) during input parsing. This results in memory corruption within the stack frame.<br /> Successful exploitation may cause a crash or potentially allow arbitrary code execution in the context of the xmlcatalog process.<br /> <br /> This issue has been fixed in the commit c2e233fc.<br /> <br /> NOTE:<br /> The maintainers of this project did not agree that this issue is a vulnerability and considered it a bug.

Productos y versiones vulnerables

CPE Desde Hasta
cpe:2.3:a:xmlsoft:libxml2:*:*:*:*:*:*:*:* 2.15.3 (incluyendo)