CVE-2026-28413

Products.isurlinportal: Possible open redirect when using more than 2 forward slashes

State: Published
Severity: 5.3 Medium
Published: Mar 5, 2026
Updated: Mar 6, 2026
Reserved: Feb 27, 2026

Description

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.

Scores

CVSS	Score	Vector	Source
3.1	5.3 Medium	CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:N/A:N	GitHub_M

Weaknesses

CWE-601 URL Redirection to Untrusted Site ('Open Redirect')

Affected Products

Product	Versions
Products.isurlinportalplone	< 4.0.0Affected < 3.1.0Affected < 2.1.0Affected

References

https://github.com/plone/Products.isurlinportal/security/advisories/GHSA-43gx-6gv6-3jcp

Every record here comes from the CVE Program’s CVE List. © 1999–2026 The MITRE Corporation. CVE is a registered trademark of The MITRE Corporation. The records are reproduced under the CVE Program terms of use.