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

CVE-2026-7666

Gravedad CVSS v4.0:
BAJA
Tipo:
CWE-319 Transmisión de información sensible en texto claro
Fecha de publicación:
03/06/2026
Última modificación:
03/06/2026

Descripción

*** Pendiente de traducción *** An issue was discovered in Django 6.0 before 6.0.6 and 5.2 before 5.2.15.<br /> `django.core.mail.backends.smtp.EmailBackend` in Django fails to prevent reuse of a partially-initialized connection after a failed `STARTTLS` handshake when `fail_silently=True`, which allows on-path network attackers to read email content via cleartext interception.<br /> Earlier, unsupported Django series (such as 5.0.x, 4.1.x, and 3.2.x) were not evaluated and may also be affected.<br /> Django would like to thank Kasper Dupont for reporting this issue.