cvedb.io
CVE-2026-25923
CRITICAL · CVSS 9.1
EPSS exploitation probability: 0%
Published 2026-02-09T22:16:04.460 · Last modified 2026-06-17T10:25:26.030

Summary

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

mylittleforum — my_little_forum

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References

This product uses data from the NVD API but is not endorsed or certified by the NVD. Informational only; not professional security advice.