WordPress security changelog
HIGH CVE-2016-2221 Modified

the wp_validate_redirect function in wp-includes/pluggable.php in WordPress before 4.4.2: An open redirect

the wp_validate_redirect function in wp-includes/pluggable.php in WordPress before 4.4.2 is affected by an open redirect. Exposure depends on how the affected operation is made reachable by the site. A crafted link can redirect visitors from the trusted site to an attacker-controlled destination.

CVE / CNA score 7.4 CVSS · security@debian.org
NVD score 7.4 CVSS 3.0 · nvd@nist.gov
Component
the wp_validate_redirect function in wp-includes/pluggable.php in WordPress before 4.4.2
Plugin slug
Not applicable
Affected
See vendor advisory
Safe version
See mitigation notes
Published
May 22, 2016
Weakness
NVD-CWE-Other
What to do

Update, patch or deactivate.

Update the wp_validate_redirect function in wp-includes/pluggable.php in WordPress before 4.4.2 to a release outside the affected range, or disable and remove it until a fixed version is available.

No confirmed safe version is listed. Consider a vendor-supported patch or temporarily restricting the affected functionality while you assess the risk.

Deactivate only when warranted by your risk profile, or when advised by your hosting provider in the limited circumstances where the vulnerability cannot otherwise be mitigated. If you’re unsure which action is appropriate, contact Fused or your hosting provider for guidance.

Source record

Technical description

Open 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.

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

References

Primary and upstream sources