CVE-2016-2221

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Summary

CVECVE-2016-2221
StatePUBLISHED
Assignerdebian
Source PriorityCVE Program / NVD first with legacy fallback
Published2016-05-22 01:59:14 UTC
Updated2026-05-06 22:30:45 UTC
DescriptionOpen redirect vulnerability in the wp_validate_redirect function in wp-includes/pluggable.php in WordPress before 4.4.2 allows remote attackers to redirect users to arbitrary web sites and conduct phishing attacks via a malformed URL that triggers incorrect hostname parsing, as demonstrated by an https:example.com URL.

Risk And Classification

Primary CVSS: v3.0 7.4 HIGH from [email protected]

CVSS:3.0/AV:N/AC:L/PR:N/UI:R/S:C/C:N/I:H/A:N

Problem Types: NVD-CWE-Other | n/a

VersionSourceTypeScoreSeverityVector
3.0[email protected]Primary7.4HIGHCVSS:3.0/AV:N/AC:L/PR:N/UI:R/S:C/C:N/I:H/A:N
2.0[email protected]Primary5.8AV:N/AC:M/Au:N/C:P/I:P/A:N

CVSS v3.0 Breakdown

Attack Vector
Network
Attack Complexity
Low
Privileges Required
None
User Interaction
Required
Scope
Changed
Confidentiality
None
Integrity
High
Availability
None

CVSS:3.0/AV:N/AC:L/PR:N/UI:R/S:C/C:N/I:H/A:N

CVSS v2.0 Breakdown

Access Vector
Network
Access Complexity
Medium
Authentication
None
Confidentiality
Partial
Integrity
Partial
Availability
None

AV:N/AC:M/Au:N/C:P/I:P/A:N

NVD Known Affected Configurations (CPE 2.3)

TypeVendorProductVersionUpdateEditionLanguage
Application Wordpress Wordpress All All All All

Vendor Declared Affected Products

SourceVendorProductVersionPlatforms
CNA Na N/a affected n/a Not specified

References

ReferenceSourceLinkTags
Version 4.4.2 « WordPress Codex af854a3a-2127-422b-91ae-364da2661108 codex.wordpress.org Patch
WordPress Bugs Let Remote Users Conduct Server-Side Request Forgery and Open Redirect Attacks - SecurityTracker af854a3a-2127-422b-91ae-364da2661108 www.securitytracker.com
WordPress 3.7-4.4.1 - Open Redirect af854a3a-2127-422b-91ae-364da2661108 wpvulndb.com
WordPress 4.4.2 Security and Maintenance Release af854a3a-2127-422b-91ae-364da2661108 wordpress.org Patch, Vendor Advisory
WordPress Prior to 4.4.2 Open Redirection Vulnerability af854a3a-2127-422b-91ae-364da2661108 www.securityfocus.com
Changeset 36444 – WordPress Trac af854a3a-2127-422b-91ae-364da2661108 core.trac.wordpress.org Patch
Debian -- Security Information -- DSA-3472-1 wordpress af854a3a-2127-422b-91ae-364da2661108 www.debian.org
CVE Program record CVE.ORG www.cve.org canonical
NVD vulnerability detail NVD nvd.nist.gov canonical, analysis

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