What is the CVSS score of CVE-2026-29778?

CVE-2026-29778 has a CVSS 3.1 base score of 7.1 (High). CVSS vector: CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:H/A:L. EPSS exploitation probability: 0.0%.

Which versions of Python are affected by CVE-2026-29778?

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.. A patch is available.

Is there a public PoC exploit available for CVE-2026-29778?

Yes, a public proof-of-concept exploit is available for CVE-2026-29778. Prioritise patching immediately. EPSS: 0.0%.

How to fix or mitigate CVE-2026-29778?

Within 24 hours: Identify all systems running pyLoad and document affected versions; isolate or disable pyLoad instances in production if business-critical. Within 7 days: Implement network segmentation to restrict pyLoad access and disable the edit_package() function if possible; monitor for suspicious folder manipulation activity. Within 30 days: Upgrade to patched version when released by vendor; conduct security assessment of any files accessed through pyLoad during vulnerability window.

Python CVE-2026-29778

HIGH

Relative Path Traversal (CWE-23)

2026-03-07 security-advisories@github.com

GHSA-6px9-j4qr-xfjw

Python Pyload Ng

7.1

CVSS 3.1 · GitHub Advisory

Severity by source

GitHub Advisory PRIMARY

7.1 HIGH

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

CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:H/A:L

Attack Vector

Network

Attack Complexity

Low

Privileges Required

Low

User Interaction

None

Scope

Unchanged

Confidentiality

None

Integrity

High

Availability

Low

Lifecycle Timeline

Analysis Generated

Mar 12, 2026 - 21:55 vuln.today

PoC Detected

Mar 11, 2026 - 22:09 vuln.today

Public exploit code

CVE Published

Mar 07, 2026 - 16:15 nvd

HIGH 7.1

DescriptionGitHub 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.

AnalysisAI

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. …

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Attack ChainAIDerived

Hypothetical attack flow derived from CVE metadata

Access

Authenticate to pyLoad

Exploit

Send edit_package request with recursive traversal sequence

Execution

Bypass single-pass '../' filter

Impact

Write files outside intended directory

Access

Authenticate to pyLoad

Exploit

Send edit_package request with recursive traversal sequence

Execution

Bypass single-pass '../' filter

Impact

Write files outside intended directory

Vulnerability AssessmentAI

Exploitation	Authenticated user access to pyLoad edit_package API endpoint (versions 0.5.0b3.dev13 through 0.5.0b3.dev96). … Additional conditions and limiting factors are described in the full assessment.
Risk Assessment	CVSS 7.1 (HIGH). … Full risk analysis with EPSS, KEV, and SSVC signal comparison available after sign-in.
Exploit Scenario	An attacker could exploit this vulnerability to compromise the affected system.
Remediation	Fixed in version 0.5.0. … Detailed patch versions, workarounds, and compensating controls in full report.

Recommended ActionAI

Within 24 hours: Identify all systems running pyLoad and document affected versions; isolate or disable pyLoad instances in production if business-critical. …

Threat intelligence, references, and detailed analysis are available after sign-in.

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CVE-2026-29778 vulnerability details – vuln.today

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