5.8 Medium
CVSS2
Access Vector
NETWORK
Access Complexity
MEDIUM
Authentication
NONE
Confidentiality Impact
PARTIAL
Integrity Impact
PARTIAL
Availability Impact
NONE
AV:N/AC:M/Au:N/C:P/I:P/A:N
wp-includes/comment.php does not properly whitelist trackbacks and pingbacks in the blogroll. In that way the attackers can bypass intended spam restrictions via a crafted URL, as demonstrated by a URL that triggers a substring match.
Update WordPress.