TI-2026-22687 Aliases CVE-2026-28413 GHSA-43gx-6gv6-3jcp

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

LOW 33CWE-601Published 2026-03-05 · Updated 2026-03-06

Key facts

Attack vector: Network
Privileges required: None
User interaction: Required
Attack complexity: Low
Impact type: Spoofing
Confidentiality · integrity · availability: Low · Low · None
Fix status: Fixed

Attack profile from CVSS 3.1 · NVD. Fix status from CNA and GitHub. Impact type from CWE-601.

Summary

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.

Why it matters now

Exploitation None reported CISA SSVC · not in CISA KEV

EPSS 0.00257 17th percentileScored 2026-11-07

Fix Fixed Products.isurlinportal (plone): 4.0.0, 3.1.0, 2.1.0Products.isurlinportal (PyPI): 4.0.0, 3.1.0, 2.1.0+1 more product

SSVC decision points

CISA ADP · SSVC 2.0.3

Exploitation: None
Automatable: Yes
Technical impact: Partial

The decision (Track, Attend, Act) also depends on your mission and well-being impact; see CISA's SSVC guide.

Affected products

Vendor	Product	Affected versions	Fixed in	Status	Source
plone	Products.isurlinportal	before 4.0.0; before 3.1.0; before 2.1.0	4.0.0, 3.1.0, 2.1.0	Patch available	CNA
—	Products.isurlinportal (PyPI)	4.0.0a1 to before 4.0.0	4.0.0	Patch available	GHSA-43gx-6gv6-3jcp
—	Products.isurlinportal (PyPI)	3.0.0 to before 3.1.0	3.1.0	Patch available	GHSA-43gx-6gv6-3jcp
—	Products.isurlinportal (PyPI)	before 2.1.0	2.1.0	Patch available	GHSA-43gx-6gv6-3jcp
—	products-isurlinportal (PyPI)	before 2.1.0	2.1.0	Patch available	GHSA-43gx-6gv6-3jcp
—	products-isurlinportal (PyPI)	3.0.0 to before 3.1.0	3.1.0	Patch available	GHSA-43gx-6gv6-3jcp

Products.isurlinportal Vendorplone Affected before 4.0.0; before 3.1.0; before 2.1.0 Fixed in 4.0.0, 3.1.0, 2.1.0 Patch available CNA
Products.isurlinportal (PyPI) Vendor— Affected 4.0.0a1 to before 4.0.0 Fixed in 4.0.0 Patch available GHSA-43gx-6gv6-3jcp
Products.isurlinportal (PyPI) Vendor— Affected 3.0.0 to before 3.1.0 Fixed in 3.1.0 Patch available GHSA-43gx-6gv6-3jcp
Products.isurlinportal (PyPI) Vendor— Affected before 2.1.0 Fixed in 2.1.0 Patch available GHSA-43gx-6gv6-3jcp
products-isurlinportal (PyPI) Vendor— Affected before 2.1.0 Fixed in 2.1.0 Patch available GHSA-43gx-6gv6-3jcp
products-isurlinportal (PyPI) Vendor— Affected 3.0.0 to before 3.1.0 Fixed in 3.1.0 Patch available GHSA-43gx-6gv6-3jcp

CPE configurations NVD · 2

CPE	Versions	Role	Vendor
cpe:2.3:a:plone:isurlinportal::::::plone::*	before 2.1.0; 3.0.0 to before 3.1.0	Vulnerable	plone
cpe:2.3:a:plone:isurlinportal:4.0.0:alpha1::::plone::*	4.0.0 alpha1	Vulnerable	plone

cpe:2.3:a:plone:isurlinportal:*:*:*:*:*:plone:*:* Versions before 2.1.0; 3.0.0 to before 3.1.0 Vulnerable ·plone
cpe:2.3:a:plone:isurlinportal:4.0.0:alpha1:*:*:*:plone:*:* Versions 4.0.0 alpha1 Vulnerable ·plone

Remediation

Fix · CNA Products.isurlinportal (plone) Fixed in 4.0.0, 3.1.0, 2.1.0
Fix · GHSA-43gx-6gv6-3jcp Products.isurlinportal (PyPI) Fixed in 4.0.0 Advisory →
Fix · GHSA-43gx-6gv6-3jcp Products.isurlinportal (PyPI) Fixed in 3.1.0 Advisory →
Fix · GHSA-43gx-6gv6-3jcp Products.isurlinportal (PyPI) Fixed in 2.1.0 Advisory →
Fix · GHSA-43gx-6gv6-3jcp products-isurlinportal (PyPI) Fixed in 2.1.0 Advisory →
Fix · GHSA-43gx-6gv6-3jcp products-isurlinportal (PyPI) Fixed in 3.1.0 Advisory →

Timeline

2026-10-02 Threatist record created from CVE-2026-28413
2026-10-03 Alias added: GHSA-43gx-6gv6-3jcp

References

Advisory 2

Other 2

TI-2021-12471 URL Redirection to Untrusted Site ('Open Redirect') in Products.isurlinportal CVSS 3.1MEDIUM 6.5

Sources

This product uses the NVD API but is not endorsed or certified by the NVD. Sources and licences