CVE-2013-4200

Severity: medium (CVSS 5.8 v2.0)
Exploited in the wild: not listed in CISA KEV
EPSS: 2.2% probability of exploitation in the next 30 days
Public exploit or detection template: yes
Published: 2014-01-21 · updated 2026-06-16
Weakness: CWE-264

Description

The isURLInPortal method in the URLTool class in in_portal.py in Plone 2.1 through 4.1, 4.2.x through 4.2.5, and 4.3.x through 4.3.1 treats URLs starting with a space as a relative URL, which allows remote attackers to bypass the allow_external_login_sites filtering property, redirect users to arbitrary web sites, and conduct phishing attacks via a space before a URL in the "next" parameter to acl_users/credentials_cookie_auth/require_login.

Affected products

Plone CMS: 2.1, 2.1.1, 2.1.2, 2.1.3, 2.1.4, 3.0 (+40)

References

http://plone.org/products/plone-hotfix/releases/20130618
http://plone.org/products/plone/security/advisories/20130618-announcement
http://www.openwall.com/lists/oss-security/2013/08/01/2
http://www.securityfocus.com/archive/1/530787/100/0/threaded
https://bugzilla.redhat.com/show_bug.cgi?id=CVE-2013-4200
http://plone.org/products/plone-hotfix/releases/20130618
http://plone.org/products/plone/security/advisories/20130618-announcement
http://www.openwall.com/lists/oss-security/2013/08/01/2
http://www.securityfocus.com/archive/1/530787/100/0/threaded
https://bugzilla.redhat.com/show_bug.cgi?id=CVE-2013-4200

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