CVE-2026-25923

CRITICAL

9.1

Descripcion

my little forum is a PHP and MySQL based internet forum that displays the messages in classical threaded view. Prior to 20260208.1, the application fails to filter the phar:// protocol in URL validation, allowing attackers to upload a malicious Phar Polyglot file (disguised as JPEG) via the image upload feature, trigger Phar deserialization through BBCode [img] tag processing, and exploit Smarty 4.1.0 POP chain to achieve arbitrary file deletion. This vulnerability is fixed in 20260208.1.

Detalles CVE

Puntuacion CVSS v3.19.1

SeveridadCRITICAL

Vector CVSSCVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:H/A:H

Vector de ataqueNETWORK

ComplejidadLOW

Privilegios requeridosNONE

Interaccion usuarioNONE

Publicado2/9/2026

Ultima modificacion3/17/2026

Fuentenvd

Avistamientos honeypot0

Productos afectados

mylittleforum:my_little_forum

Debilidades (CWE)

CWE-434CWE-502

Referencias

https://github.com/My-Little-Forum/mylittleforum/releases/tag/20260208.1(security-advisories@github.com)

https://github.com/My-Little-Forum/mylittleforum/security/advisories/GHSA-wr9p-3c3g-78fw(security-advisories@github.com)

Correlaciones IOC

Sin correlaciones registradas

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