The Email Subscribers by Icegram Express plugin for WordPress is vulnerable to SQL Injection via the 'workflow_ids' parameter in all versions up to, and including, 5.9.16 due to insufficient escaping on the user supplied parameter and lack of sufficient preparation on the existing SQL query. This makes it possible for authenticated attackers, with administrator-level access and above, to append additional SQL queries into already existing queries that can be used to extract sensitive information from the database.
Attack Parameters
Attack Vector
Network
Can be exploited remotely
Attack Complexity
Low
Easy to exploit
Privileges Required
High
Admin privileges needed
User Interaction
None
No user interaction needed
Impact Assessment
Confidentiality
High
Complete data leak
Integrity
High
Complete data modification
Availability
None
No disruption
CVSS Vector v3.1
Weakness Type (CWE)
References 6
https://downloads.wordpress.org/plugin/email-subscribers.5.9.15.zip
security@wordfence.com
https://gist.github.com/stevenyu113228/6c5c3f660e6dc739768842c051028f40
security@wordfence.com
https://plugins.trac.wordpress.org/browser/email-subscribers/tags/5.9.15/lite/i…
security@wordfence.com
https://plugins.trac.wordpress.org/browser/email-subscribers/trunk/lite/include…
security@wordfence.com
https://plugins.trac.wordpress.org/changeset/3464881/
security@wordfence.com
https://www.wordfence.com/threat-intel/vulnerabilities/id/d8dc995d-912e-4d83-84…
security@wordfence.com