Vulnerability · Published Mar 7, 2026 · Assigned by GitHub_M

CVE-2026-29778pyLoad: Arbitrary File Write via Path Traversal in edit_package()

High 7.1

In plain English

A high-severity security flaw in pyload from pyload. Proof-of-concept exploit code is public. The chance it is exploited in the next 30 days is estimated at 0.6% (higher than 47% of all known vulnerabilities). Fixed versions are available - upgrade the affected package.

Severity (CVSS 3.1)7.1High

Exploit odds (30 days)0.6%top 52.6% of all CVEs

Exploited in the wildNo reportsCISA SSVC: poc

Attack toolingNoneno public tooling known

Official description

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.

Affected packages & fixed versions

Ecosystem	Package	Fixed in	Advisory
PyPI	pyload-ng	0.5.0b3.dev97	GHSA-6px9-j4qr-xfjw
PyPI	pyload-ng	0.5.0b3.dev97	PYSEC-2026-121

Affected products (as reported)

Vendor	Product	Versions
pyload	pyload	>= 0.5.0b3.dev13, < 0.5.0b3.dev97

Weakness: CWE-23 · Vector: CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:H/A:L

References

https://github.com/pyload/pyload/security/advisories/GHSA-6px9-j4qr-xfjw x_refsource_CONFIRM