Python
CVE-2026-29778
HIGH
GHSA-6px9-j4qr-xfjw
Attack ChainAIDerived
Hypothetical attack flow derived from CVE metadata – not a confirmed exploit chain
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AccessAuthenticate to pyLoad
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ExploitSend edit_package request with recursive traversal sequence
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ExecutionBypass single-pass '../' filter
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ImpactWrite files outside intended directory
Vulnerability Assessment
| Weakness |
CWE
OWASP Top 10:2025
A01:2025 - Broken Access Control
ASVS 5.0
V5 - File Handling Relative path traversal prevention
|
| Exploitation Conditions | Authenticated user access to pyLoad edit_package API endpoint (versions 0.5.0b3.dev13 through 0.5.0b3.dev96). Requires valid authentication credentials to exploit path traversal vulnerability. |
| Impact | CVSS 7.1 (HIGH). Attack vector: Network. Complexity: Low. Privileges required: Low. User interaction: None. Public exploit/POC available. |
| Exploit ScenarioDerived | An attacker could exploit this vulnerability to compromise the affected system. |
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Alert meAnalysisAIv1 – Mar 12, 2026
Path traversal in pyLoad versions 0.5.0b3.dev13 through 0.5.0b3.dev96 allows authenticated attackers to manipulate package folder locations through insufficient sanitization of the pack_folder parameter, bypassing directory traversal protections with recursive sequences. An attacker can exploit this to write files outside intended directories, causing data integrity issues and potential denial of service. Public exploit code exists for this vulnerability and no patch is currently available.
Earlier versions of this analysis (1)
pyLoad is a free and open-source download manager written in Python. From version 0.5.0b3.dev13 to 0.5.0b3.dev96, the edit_package() function implements insufficient sanitization for the pack_folder parameter. [CVSS 7.1 HIGH]
RemediationAI
Fixed in version 0.5.0. Restrict network access to the affected service where possible.
Affected Packages
Source: OSV (Open Source Vulnerabilities)
Affects your stack
Affects 1 package in pypi
Checking this CVE against your own stacks and servers is part of the Basic plan and up.
Technical ContextAI · show details
Affects Pyload-Ng. pyLoad is a free and open-source download manager written in Python. From version 0.5.0b3.dev13 to 0.5.0b3.dev96, 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. This issue has been patched in version 0.5.0b3.dev97.
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Severity by source
AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:H/A:L
Primary rating from GitHub Advisory · only source for this CVE.
CVSS VectorGitHub Advisory
Lifecycle Timeline
2DescriptionGitHub Advisory
pyLoad is a free and open-source download manager written in Python. From version 0.5.0b3.dev13 to 0.5.0b3.dev96, 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. This issue has been patched in version 0.5.0b3.dev97.
Executive ViewAI
pyLoad download manager versions 0.5.0b3.dev13 through 0.5.0b3.dev96 contain a path traversal vulnerability that allows attackers to manipulate folder operations without authorization. Organizations using affected pyLoad instances are at risk of unauthorized file system access and potential data exfiltration, with public exploits already available.
Disable or restrict access to the edit_package() API endpoint using WAF or API gateway rules; implement strict network segmentation to limit pyLoad's file system permissions to read-only where feasible; apply principle of least privilege to pyLoad service accounts; enable file integrity monitoring on directories where pyLoad operates; restrict pyLoad usage to trusted networks only; disable pyLoad entirely if not business-critical until patch is released.
Threat Intelligence Overview
NVD
CVE.org
EPSS
How this decision was reached
The engine reads each signal below and applies a fixed list of rules from top to bottom. The first rule that matches sets the recommended action – like a statement, every line is shown.
What every action level means
SSVC AssessmentENISA
Priority Score
Affected Products (CPE)GitHub Advisory
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