CVE-2026-28413
March 05, 2026
Products.isurlinportal is a replacement for isURLInPortal method in Plone. Prior to versions 2.1.0, 3.1.0, and 4.0.0, a url /login?came_from=////evil.example may redirect to an external website after login. This issue has been patched in versions 2.1.0, 3.1.0, and 4.0.0.
Affected Packages
products.isurlinportal (PYTHON):
Affected version(s) =4.0.0a1 <4.0.0Fix Suggestion:
Update to version 4.0.0products.isurlinportal (PYTHON):
Affected version(s) >=1.0.0 <2.1.0Fix Suggestion:
Update to version 2.1.0products.isurlinportal (PYTHON):
Affected version(s) >=3.0.0 <3.1.0Fix Suggestion:
Update to version 3.1.0Related Resources (3)
Do you need more information?
Contact UsCVSS v4
Base Score:
6.9
Attack Vector
NETWORK
Attack Complexity
LOW
Attack Requirements
NONE
Privileges Required
NONE
User Interaction
NONE
Vulnerable System Confidentiality
LOW
Vulnerable System Integrity
NONE
Vulnerable System Availability
NONE
Subsequent System Confidentiality
NONE
Subsequent System Integrity
NONE
Subsequent System Availability
NONE
CVSS v3
Base Score:
5.3
Attack Vector
NETWORK
Attack Complexity
LOW
Privileges Required
NONE
User Interaction
NONE
Scope
UNCHANGED
Confidentiality
LOW
Integrity
NONE
Availability
NONE
Weakness Type (CWE)
URL Redirection to Untrusted Site ('Open Redirect')
EPSS
Base Score:
0.04
