CVE-2026-18752: CWE-89 Improper Neutralization of Special Elements used in an SQL Command ('SQL Injection') in lukeseager Persistent Login
Description
The Persistent Login plugin for WordPress is vulnerable to generic SQL Injection via 'wppl_device_id' Cookie in all versions up to, and including, 3.1.0 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 subscriber-level access and above, to append additional SQL queries into already existing queries that can be used to extract sensitive information from the database. This vulnerability is only exploitable when the plugin's Login History feature is enabled.
CVSS v3.1
Score 6.5medium
Affected software
lukeseager
Persistent Login
Weaknesses
AI-Powered Analysis
Machine-generated threat intelligence
Technical Analysis
CVE-2026-18752 is an SQL Injection vulnerability (CWE-89) in the Persistent Login WordPress plugin by lukeseager. It affects all versions up to and including 3.1.0. The issue is due to improper neutralization of special elements in the 'wppl_device_id' cookie parameter, which is used in SQL queries without sufficient escaping or preparation. Authenticated attackers with subscriber-level privileges or above can exploit this when the Login History feature is enabled to append arbitrary SQL commands to existing queries, potentially extracting sensitive database information.
Potential Impact
An attacker with subscriber-level or higher privileges can exploit this vulnerability to extract sensitive information from the database by injecting additional SQL queries. The vulnerability does not impact confidentiality, integrity, or availability beyond data disclosure. No known exploits are reported in the wild.
Mitigation Recommendations
Patch status is not yet confirmed — check the vendor advisory for current remediation guidance. Until a fix is available, disabling the Login History feature in the Persistent Login plugin will prevent exploitation. Restricting user privileges and monitoring for unusual activity related to this plugin is advisable.
Technical Details
- Data Version
- 5.2
- Assigner Short Name
- Wordfence
- Date Reserved
- 2026-08-03T23:30:57.291Z
- Cvss Version
- 3.1
- State
- PUBLISHED
Threat ID: 6a9656a2acd9273b4936dc5b
Added to database: 09/01/2026, 04:37:54 UTC
Last enriched: 09/07/2026, 14:44:25 UTC
Last updated: 10/16/2026, 18:48:19 UTC
Views: 60
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