CVE-2026-46561: pyLoad: SSRF via HTTP Redirect Bypass in parse_urls API

Severity: medium (CVSS 5.0 v3.1)
Exploited in the wild: not listed in CISA KEV
EPSS: 0.2% probability of exploitation in the next 30 days
Public exploit or detection template: none known
Published: 2026-05-28 · updated 2026-06-17
Weakness: CWE-918

Description

pyLoad is a free and open-source download manager written in Python. Prior to 0.5.0b3.dev100, the PREREQFUNCTION-based private IP check was not applied to HTTPRequest (used by the parse_urls API). An authenticated attacker can supply a URL pointing to an attacker-controlled server that responds with a 302 redirect to an internal/private IP address, bypassing the is_global_host() check on the initial URL. This vulnerability is fixed in 0.5.0b3.dev100.

Affected products

pyload: before 0.5.0b3.dev100

References

https://github.com/pyload/pyload/security/advisories/GHSA-8rp3-xc6w-5qp5
https://github.com/pyload/pyload/security/advisories/GHSA-8rp3-xc6w-5qp5

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