Vulnerability · Published Apr 9, 2026 · Assigned by GitHub_M

CVE-2026-40071pyLoad WebUI JSON permission mismatch lets ADD/DELETE users invoke MODIFY-only actions

Medium 5.4

In plain English

A medium-severity incorrect authorization in pyload from pyload. Proof-of-concept exploit code is public. The chance it is exploited in the next 30 days is estimated at 0.2% (higher than 14% of all known vulnerabilities). Fixed versions are available - upgrade the affected package.

Severity (CVSS 3.1)5.4Medium

Exploit odds (30 days)0.2%top 86.5% 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. Prior to 0.5.0b3.dev97, the /json/package_order, /json/link_order, and /json/abort_link WebUI JSON endpoints enforce weaker permissions than the core API methods they invoke. This allows authenticated low-privileged users to execute MODIFY operations that should be denied by pyLoad's own permission model. This vulnerability is fixed in 0.5.0b3.dev97.

Affected packages & fixed versions

Ecosystem	Package	Fixed in	Advisory
PyPI	pyload-ng	0.5.0b3.dev97	GHSA-rfgh-63mg-8pwm
PyPI	pyload-ng	no fix listed	PYSEC-2026-2997

Affected products (as reported)

Vendor	Product	Versions
pyload	pyload	< 0.5.0b3.dev97

Weakness: CWE-863 · Vector: CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:L/A:L

References

https://github.com/pyload/pyload/security/advisories/GHSA-rfgh-63mg-8pwm x_refsource_CONFIRM