Open Redirect Affecting products.isurlinportal package, versions [,2.1.0)[3.0.0,3.1.0)[4.0.0a1,4.0.0)
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-PRODUCTSISURLINPORTAL-15435571
- published6 Mar 2026
- disclosed2 Mar 2026
- creditUnknown
Introduced: 2 Mar 2026
CVE-2026-28413 (opens in a new tab)How to fix?
Upgrade Products.isurlinportal to version 2.1.0, 3.1.0, 4.0.0 or higher.
Overview
Products.isurlinportal is a replacement for isURLInPortal method in Plone.
Affected versions of this package are vulnerable to Open Redirect via the login form. An attacker can cause users to be redirected to an external website by crafting a URL with more than two forward slashes in the came_from parameter after login. This is only exploitable if the login process has been customized, such as with add-ons.