CVE-2013-4200
Plone Open Redirection vulnerability via next parameter
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.
Exploit likelihood
What each source reports
NVD Score used
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.
- Record
CVE-2013-4200- CVSS 2.0
- 5.8 Medium
AV:N/AC:M/Au:N/C:P/I:P/A:N - Weakness
- CWE-264
- Updated
- 2026-11-02
CVE List No score
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.
- Record
CVE-2013-4200- Updated
- 2026-11-02
EUVDEUVD-2014-0082 No score
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.
- Record
EUVD-2014-0082- Updated
- 2026-11-03
GitHub AdvisoriesGHSA-56p3-rrp4-2j82
Plone Open Redirection vulnerability via next parameter
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.
- Record
GHSA-56p3-rrp4-2j82- CVSS 4.0
- 8.7 High
CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:N/VI:H/VA:N/SC:N/SI:N/SA:N - CVSS 3.1
- 7.5 High
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:H/A:N - Weakness
- CWE-601
- Updated
- 2026-11-02
OSVGHSA-56p3-rrp4-2j82
Plone Open Redirection vulnerability via next parameter
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.
- Record
GHSA-56p3-rrp4-2j82- CVSS 4.0
- 8.7 High
CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:N/VI:H/VA:N/SC:N/SI:N/SA:N - CVSS 3.1
- 7.5 High
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:H/A:N - Weakness
- CWE-601
- Updated
- 2026-11-02
OSVPYSEC-2014-64 No score
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.
- Record
PYSEC-2014-64- Updated
- 2026-11-02
Affected products
Affected packages
| Package | Affected | Fixed |
|---|---|---|
plonePyPI |
2.1 up to 4.1.1 | 4.1.1 |
plonePyPI |
4.2 up to 4.2.6 | 4.2.6 |
plonePyPI |
4.3 up to 4.3.2 | 4.3.2 |
plonePyPI |
2.1 up to 4.1.1, plus listed versions 3.23.2.13.2.23.2.33.2a1 Show 44 moreShow less3.2rc13.33.3.13.3.23.3.33.3.43.3.53.3.63.3b13.3rc13.3rc23.3rc33.3rc43.3rc54.04.0.14.0.104.0.24.0.34.0.44.0.54.0.64.0.74.0.84.0.94.0a14.0a24.0a34.0a44.0a54.0b14.0b24.0b34.0b44.0b54.0rc14.14.1a14.1a24.1a34.1b14.1b24.1rc24.1rc3 |
4.1.1 |
plonePyPI |
4.2 up to 4.2.6, plus listed versions 4.2.14.2.24.2.34.2.44.2.5 |
4.2.6 |
plonePyPI |
4.3 up to 4.3.2, plus listed versions 4.3.1 |
4.3.2 |
plonePyPI |
2.1 up to 4.1.1, 4.2 up to 4.2.6, 4.3 up to 4.3.2, plus listed versions 3.23.2.13.2.23.2.33.2a1 Show 45 moreShow less3.2rc13.33.3.13.3.23.3.33.3.43.3.53.3.63.3b13.3rc13.3rc23.3rc33.3rc43.3rc54.04.0.14.0.104.0.24.0.34.0.44.0.54.0.64.0.74.0.84.0.94.0a14.0a24.0a34.0a44.0a54.0b14.0b24.0b34.0b44.0b54.0rc14.14.1a14.1a24.1a34.1b14.1b24.1rc24.1rc34.2.1 |
4.1.14.2.64.3.2 |
Public exploits
Links only. Every CVE stores no exploit code.
| Source | Link | Date |
|---|---|---|
| Exploit-DB | Plone - 'in_portal.py' < 4.1.3 Session Hijacking | 2013-07-31 |
History
| Recorded | Changed | Sources |
|---|---|---|
| aliases | EUVD | |
| first indexed | CVE List, Exploit-DB, GitHub Advisories, NVD, OSV |
Dates are when Every CVE recorded each change. Upstream dates may differ.
In short
CVE-2013-4200 is a medium vulnerability (CVSS 5.8) in Plone, published January 21, 2014. Public exploit code exists. EPSS puts the chance of exploitation in the next 30 days at 2.22%, the 82nd percentile. Fixed in plone 4.1.1.
References
openwall.com/lists/oss-security/2013/08/01/2
plone.org/products/plone/security/advisories/20130618-announcement
bugzilla.redhat.com/show_bug.cgi?id=CVE-2013-4200
securityfocus.com/archive/1/530787/100/0/threaded
nvd.nist.gov/vuln/detail/CVE-2013-4200
github.com/pypa/advisory-database/tree/main/vulns/plone/PYSEC-2014-64.yaml
Left out here: 5 versions. The JSON record has them.