CVE-2025-54140

pyLoad has Path Traversal Vulnerability in json/upload Endpoint that allows Arbitrary File Write

Published Jul 22, 2025 CVSS 3.1 · 7.5 High EPSS < 1% KEV · Not listed
Description
pyLoad is a free and open-source Download Manager written in pure Python. In version 0.5.0b3.dev89, an authenticated path traversal vulnerability exists in the /json/upload endpoint of pyLoad. By manipulating the filename of an uploaded file, an attacker can traverse out of the intended upload directory, allowing them to write arbitrary files to any location on the system accessible to the pyLoad process. This may lead to: Remote Code Execution (RCE), local privilege escalation, system-wide compromise, persistence, and backdoors. This is fixed in version 0.5.0b3.dev90.

Remediation

No solution or workaround provided in the CVE record

Tracking

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Advisories

Source ID Title
EUVD EUVD EUVD-2025-22382 `pyLoad` has Path Traversal Vulnerability in `json/upload` Endpoint that allows Arbitrary File Write
Github GHSA Github GHSA GHSA-xqpg-92fq-grfg `pyLoad` has Path Traversal Vulnerability in `json/upload` Endpoint that allows Arbitrary File Write
History
Type Values Removed Values Added
Metrics ssvc

{'options': {'Automatable': 'no', 'Exploitation': 'poc', 'Technical Impact': 'total'}, 'version': '2.0.3'}

Type Values Removed Values Added
First Time appeared Pyload
Pyload pyload
Vendors & Products Pyload
Pyload pyload
Type Values Removed Values Added
Description pyLoad is a free and open-source Download Manager written in pure Python. In version 0.5.0b3.dev89, an authenticated path traversal vulnerability exists in the /json/upload endpoint of pyLoad. By manipulating the filename of an uploaded file, an attacker can traverse out of the intended upload directory, allowing them to write arbitrary files to any location on the system accessible to the pyLoad process. This may lead to: Remote Code Execution (RCE), local privilege escalation, system-wide compromise, persistence, and backdoors. This is fixed in version 0.5.0b3.dev90.
Title pyLoad has Path Traversal Vulnerability in json/upload Endpoint that allows Arbitrary File Write
Weaknesses CWE-22
References
Metrics cvssV3_1

{'score': 7.5, 'vector': 'CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:H/A:N'}

Weaknesses

Sources

Status
PUBLISHED
Assigner
GitHub_M
Published
Updated
Jul 23, 2025, 6:28 PM
Reserved
Jul 16, 2025, 11:53 PM
Status
Deferred
Published
Jul 22, 2025, 10:15 PM
Modified
Jun 17, 2026, 9:39 AM