๐Ÿ›ก๏ธ CVE-2026-25923
๐Ÿ”ด CVSS 9.1 โ€” Critical โš ๏ธ Exploit Public CWE-434 NVD
9.1
CVSS Score
0 Low4 Medium7 High9 Critical10

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.

Details

Severity CRITICAL
CVSS Score 9.1
CVSS Vector CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:H/A:H
CWE CWE-434
Public Exploit โš ๏ธ Yes
Source NVD
Published 2026-02-09
Updated 2026-06-02
Modified 2026-03-17
Fix URL N/A

Affected Packages

Software From version Fixed in
my-little-forum โ€” 20260208.1

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