CVE-2026-28413

Name: CVE-2026-28413
Creator: NVD / NIST
Published: 2026-03-05T21:16:22.023+00:00
License: https://creativecommons.org/publicdomain/zero/1.0/

MEDIUMCVSS 6.1/10EPSS 0.23%

Last modified Jun 17, 2026

CVE-2026-28413 is a medium-severity vulnerability rated 6.1/10 on the CVSS scale. 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. EPSS estimates a 0.23% chance of exploitation in the next 30 days.

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.

Metrics

CVSS 3.1

6.1/10

CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:C/C:L/I:L/A:N

EPSS Probability

0.23%

13.4th percentile

Probability of exploitation in the next 30 days. Learn more

Weakness Enumeration

CWE-601

Affected Software

Vendor	Product	Versions	Update
Plone	Isurlinportal	< 2.1.0	—
Plone	Isurlinportal	>= 3.0.0, < 3.1.0	—
Plone	Isurlinportal	4.0.0	Alpha1

References

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

Timeline

Published: Mar 5, 2026
Last Modified: Jun 17, 2026
Status: Analyzed

Frequently Asked Questions

What is CVE-2026-28413?

How severe is CVE-2026-28413?

CVE-2026-28413 has a CVSS score of 6.1/10 (MEDIUM severity). The EPSS model estimates a 0.23% probability of exploitation in the next 30 days.

How do I fix CVE-2026-28413?

Check the vendor references and advisories linked above for patched versions and mitigation guidance. You can also run a Strix scan to test if your systems are affected.

Are you affected by CVE-2026-28413?

Run a free Strix scan to check your systems for this vulnerability.

Scan your code now

Source: NVD / NIST