Critical severity9.1NVD Advisory· Published Feb 9, 2026· Updated Jun 17, 2026
CVE-2026-25923
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.
AI Insight
LLM-synthesized narrative grounded in this CVE's description and references.
Affected products
3< 20260208.1+ 2 more
- (no CPE)range: < 20260208.1
- cpe:2.3:a:mylittleforum:my_little_forum:*:*:*:*:*:*:*:*range: <20260208.1
- (no CPE)range: <20260208.1
Patches
Vulnerability mechanics
References
2- github.com/My-Little-Forum/mylittleforum/security/advisories/GHSA-wr9p-3c3g-78fwnvdExploitMitigationVendor Advisory
- github.com/My-Little-Forum/mylittleforum/releases/tag/20260208.1nvdProductRelease Notes
News mentions
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