Origin Validation Error Affecting pyload-ng package, versions [,0.5.0b3.dev98)
Threat Intelligence
The probability is the direct output of the EPSS model, and conveys an overall sense of the threat of exploitation in the wild. The percentile measures the EPSS probability relative to all known EPSS scores. Note: This data is updated daily, relying on the latest available EPSS model version. Check out the EPSS documentation for more details.
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Test your applications- Snyk IDSNYK-PYTHON-PYLOADNG-16318353
- published28 Apr 2026
- disclosed16 Apr 2026
- creditoffset
Introduced: 16 Apr 2026
CVE-2026-40594 (opens in a new tab)How to fix?
Upgrade pyload-ng to version 0.5.0b3.dev98 or higher.
Overview
pyload-ng is a The free and open-source Download Manager written in pure Python
Affected versions of this package are vulnerable to Origin Validation Error via the set_session_cookie_secure function. An attacker can cause session cookies to be issued without the Secure flag or disrupt user sessions by spoofing the X-Forwarded-Proto header in concurrent requests. This can lead to session cookie exposure or denial of service for legitimate users.