pyLoad up to 0.5.0b3.dev100 API api_blueprint.py rpc input validation

Summaryinfo

A vulnerability classified as problematic has been found in pyLoad. This affects the function rpc of the file api_blueprint.py of the component API. The manipulation leads to input validation. This vulnerability is uniquely identified as CVE-2026-48484. The attack is possible to be carried out remotely. No exploit exists. It is recommended to upgrade the affected component.

Detailsinfo

A vulnerability was found in pyLoad and classified as problematic. This issue affects the function rpc of the file api_blueprint.py of the component API. The manipulation with an unknown input leads to a input validation vulnerability. Using CWE to declare the problem leads to CWE-20. The product receives input or data, but it does not validate or incorrectly validates that the input has the properties that are required to process the data safely and correctly. Impacted is availability. The summary by CVE is:

pyLoad is a free and open-source download manager written in Python. Prior to 0.5.0b3.dev101, the API `rpc` function in `api_blueprint.py` handles `multipart/form-data` uploads by reading the whole content of the uploaded file into memory with `file.read()`. This occurs before the data is sent to the underlying function. Since there is no size limit set at this point, a large file upload can exhaust the server's available memory which led to process termination. Version 0.5.0b3.dev101 contains a patch.

It is possible to read the advisory at github.com. The identification of this vulnerability is CVE-2026-48484 since 05/21/2026. The exploitation is known to be easy. The attack may be initiated remotely. Technical details of the vulnerability are known, but there is no available exploit.

Upgrading to version 0.5.0b3.dev101 eliminates this vulnerability.

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Productinfo

Name

• pyLoad

Version

• 0.5.0b3.dev31
• 0.5.0b3.dev32
• 0.5.0b3.dev33
• 0.5.0b3.dev36
• 0.5.0b3.dev40
• 0.5.0b3.dev41
• 0.5.0b3.dev42
• 0.5.0b3.dev44
• 0.5.0b3.dev75
• 0.5.0b3.dev77
• 0.5.0b3.dev78
• 0.5.0b3.dev79
• 0.5.0b3.dev87
• 0.5.0b3.dev88
• 0.5.0b3.dev89
• 0.5.0b3.dev90
• 0.5.0b3.dev91
• 0.5.0b3.dev92
• 0.5.0b3.dev97
• 0.5.0b3.dev98
• 0.5.0b3.dev100

Website

• Product: https://github.com/pyload/pyload/

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