CVE-2026-53503
Gravedad CVSS v3.1:
ALTA
Tipo:
CWE-20
Validación incorrecta de entrada
Fecha de publicación:
31/07/2026
Última modificación:
31/07/2026
Descripción
*** Pendiente de traducción *** Thumbor is an open-source photo thumbnail service by globo.com. Prior to 7.8.0, Thumbor's filters:convolution(, , ) filter passes the user-controlled value to a C extension (thumbor/ext/filters/_convolution.c) where it is used as a divisor (for % and /) without validating columns > 0. When columns=0, the C code triggers undefined behavior; on x86_64 this reliably results in a fatal divide-by-zero trap (SIGFPE) and crashes the Thumbor process, causing a remote denial of service. This issue is fixed in 7.8.0.
Impacto
Puntuación base 3.x
7.50
Gravedad 3.x
ALTA



