Contact Form Submissions <= 1.7 - Authenticated SQL Injection
Strategic Overview
- Status
- Patched in 1.7.1
- Affected Plugin
- Contact Form Submissions
- Affected Version
<= 1.7- CVSS
- 7.2High
- Weakness type
- CWE-89 · Improper Neutralization of Special Elements used in an SQL Command ('SQL Injection')
- CVE
CVE-2021-24125
At a glance
CVE-2021-24125 is a high-severity Improper Neutralization of Special Elements used in an SQL Command ('SQL Injection') vulnerability in the Contact Form Submissions WordPress plugin, affecting versions <= 1.7. It carries a CVSS score of 7.2 (reachable over the network; low attack complexity; high confidentiality, integrity, availability impact). Exploitation requires an authenticated account. The issue is fixed in version 1.7.1; sites on affected versions should update now. Disclosed January 2021, reported by vigov5 SunCSR.
Vulnerability Overview
Unvalidated input in the Contact Form Submissions WordPress plugin before 1.7.1, could lead to SQL injection in the wpcf7_contact_form GET parameter when submitting a filter request as a high privilege user (admin+)
Technical Analysis
The vector marks this flaw as remotely reachable over the network, with low attack complexity — no special timing or configuration is needed, and no interaction from a victim user. A successful exploit has high impact on confidentiality, integrity, availability — full site compromise territory.
CWE-89: Improper Neutralization of Special Elements used in an SQL Command ('SQL Injection')
Reaching this weakness in Contact Form Submissions <= 1.7 takes any authenticated account. SQL injection happens when request data is concatenated into a query instead of being bound as a parameter, letting an attacker change the structure of the statement rather than just its values.
A working injection can read any table the database user can see, which on a WordPress install means user records, password hashes and session or API secrets stored in options. For Contact Form Submissions the fix is 1.7.1: builds <= 1.7 are affected, anything from 1.7.1 onward is not.
Remediation
Update to version 1.7.1, or a newer patched version
How does WordSec protect against this?
The attempt arrives as an ordinary request to Contact Form Submissions: WordSec's web application firewall inspects request payloads before WordPress loads them. None of that substitutes for the fix: Contact Form Submissions 1.7.1 closes this, and updating the plugin is the step that ends it.
- Firewall
- Alerts
External References
Related records
Other vulnerabilities in Contact Form Submissions
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