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Vulnerability · Published May 28, 2026 · Assigned by GitHub_M

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

Medium 5.0

In plain English

A medium-severity server-side request forgery 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 7% of all known vulnerabilities). Fixed versions are available - upgrade the affected package.

Severity (CVSS 3.1)5.0Medium
Exploit odds (30 days)0.2%top 92.9% 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.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 packages & fixed versions

EcosystemPackageFixed inAdvisory
PyPIpyload-ng0.5.0b3.dev100GHSA-8rp3-xc6w-5qp5
PyPIpyload-ng0.5.0b3.dev100PYSEC-2026-2991

Affected products (as reported)

VendorProductVersions
pyload pyload < 0.5.0b3.dev100

Weakness: CWE-918 · Vector: CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:C/C:L/I:N/A:N

References