Security Alert Summary
The paymendo WordPress plugin through version 1.1 contains a SQL injection vulnerability. A parameter is not properly sanitized or escaped before being used in a database query, which can allow blind SQL injection attacks. Site owners should assess whether they use this plugin and follow remediation guidance below.
CVE Details
- CVE ID: CVE-2026-89304
- Affected component: paymendo WordPress plugin
- Affected versions: Versions up to and including 1.1
- Published: October 11, 2026 at 7:17:28 AM UTC
- Last modified: October 11, 2026 at 12:17:28 PM UTC
- CVSS v3.1: Base Score 6.5, MEDIUM — Vector: CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:N/A:N
- Authentication / privileges / user interaction: Privileges Required: LOW; User Interaction: NONE; Attack Vector: NETWORK (from CVSS data)
- Primary impact: Confidentiality: HIGH; Integrity: NONE; Availability: NONE
- CWE: CWE-89 (SQL Injection)
Technical Details
The vulnerability is a SQL injection issue caused by a parameter that is not properly sanitized and escaped before being included in a SQL query. According to the description, this allows blind SQL injection attacks. The report states that unauthenticated users can perform such attacks; the CVSS data records privileges required as LOW and no user interaction is needed.
No specific function names or REST endpoints are provided in the source data. The root cause, as described, is missing input validation and escaping prior to constructing a database query, which enables an attacker to influence backend SQL and infer data via blind techniques.
Impact is limited to data disclosure (confidentiality) according to the provided metrics; there is no indicated integrity or availability impact in the supplied data.
How This Could Impact Your Website
Consider a small organization where the site owner manages plugins, an internal staff editor creates content, and an external contractor contributes posts. If the site runs a vulnerable version of the paymendo plugin, an attacker exploiting the SQL injection could retrieve sensitive information from the database that relates to users or business data. This might include internal user email addresses or other fields that aid in targeted phishing or social engineering against staff or contractors.
In practical terms, exposed email lists increase the risk of successful phishing campaigns against editors or administrators, and leaked internal data can complicate incident response. The supplied data indicates confidentiality impact rather than full site takeover, so the primary risk is information disclosure rather than direct site defacement or downtime.
If youre unsure whether your site is affected or how to assess your current user roles and plugins, it may be worth having a professional review your setup.
Recommended Actions
- Update the affected plugin as soon as a patched version is available.
- Review and reduce unnecessary user roles, especially contributor accounts and other low-privilege users.
- Enforce strong passwords and enable two-factor authentication for editors and administrators.
- Remove unused or unmaintained plugins from your site.
- Monitor site activity and access logs for unusual behavior, such as unexpected database queries or elevated error rates.
If youd like help reviewing your plugins, user roles, or overall WordPress security posture, our team at Freshy is happy to help.
