Unrated severityNVD Advisory· Published Feb 9, 2026· Updated Feb 11, 2026
Phar Deserialization leading to Arbitrary File Deletion in my little forum
CVE-2026-25923
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.
Affected products
2- Range: <20260208.1
- My-Little-Forum/mylittleforumv5Range: < 20260208.1
Patches
0No patches discovered yet.
Vulnerability mechanics
AI mechanics synthesis has not run for this CVE yet.
References
2- github.com/My-Little-Forum/mylittleforum/releases/tag/20260208.1mitrex_refsource_MISC
- github.com/My-Little-Forum/mylittleforum/security/advisories/GHSA-wr9p-3c3g-78fwmitrex_refsource_CONFIRM
News mentions
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