CVE-2025-57751

Denial-of-Service attack in pyLoad CNL Blueprint using dukpy.evaljs

State: Published
Severity: 7.7 High
Published: Aug 21, 2025
Updated: Aug 21, 2025
Reserved: Aug 19, 2025

Description

pyLoad is the free and open-source Download Manager written in pure Python. The jk parameter is received in pyLoad CNL Blueprint. Due to the lack of jk parameter verification, the jk parameter input by the user is directly determined as dykpy.evaljs(), resulting in the server CPU being fully occupied and the web-ui becoming unresponsive. This vulnerability is fixed in 0.5.0b3.dev92.

Scores

CVSS	Score	Vector	Source
4.0	7.7 High	CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:N/VI:N/VA:H/SC:N/SI:N/SA:N/E:P	GitHub_M

Weaknesses

CWE-400 Uncontrolled Resource Consumption

Affected Products

Product	Versions
pyloadpyload	< 0.5.0b3.dev92Affected

References

https://github.com/pyload/pyload/security/advisories/GHSA-9gjj-6gj7-c4wj

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