| Package | Affected versions | Patched versions |
|---|---|---|
| pyload-ng | ≥ 0.5.0b3.dev13, < 0.5.0b3.dev97 | 0.5.0b3.dev97 |
| pyload-ng | ≥ 0.5.0b3.dev13, < 0.5.0b3.dev97 | 0.5.0b3.dev97 |
The edit_package() function implements insufficient sanitization for the pack_folder parameter. The current protection relies on a single-pass string replacement of "../", which can be bypassed using crafted recursive traversal sequences.
Exploitation
An authenticated user with MODIFY permission can bypass the sanitization by submitting a payload such as:
pack_folder=..././..././..././tmp
After the single-pass replacement, this becomes:
../../../tmp
Because the traversal sequences are not properly validated, the resulting normalized path escapes the intended storage directory and writes files to /tmp or other locations.
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