CVE-2026-25923 – Phar Deserialization leading to Arbitrary File Deletion in my little forum

CVE ID : CVE-2026-25923

Published : Feb. 9, 2026, 9:56 p.m. | 25 minutes ago

Description : 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.

Severity: 0.0 | NA

Visit the link for more details, such as CVSS details, affected products, timeline, and more…