| Package | Affected versions | Patched versions |
|---|---|---|
| flatnuke | = 1.0= 1.5= 1.6= 1.7= 1.8= 2.0= 2.5.1= 2.5.3= 2.5.5= 2.5.6≤ 2.5.7 |
The Gallery module in Simone Vellei Flatnuke 2.5.7 and earlier, when Gallery uploads are enabled, does not restrict the extensions of uploaded files that begin with a GIF header, which allows remote authenticated users to execute arbitrary PHP code via an uploaded .php file.
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