Very Simple Contact Form <= 11.5 - Captcha Bypass
Strategic Overview
- Status
- Patched in 11.6
- Affected Plugin
- VS Contact Form
- Affected Version
<= 11.5- CVSS
- 7.2High
- Weakness type
- CWE-804 · Guessable CAPTCHA
- CVE
CVE-2022-1801
At a glance
CVE-2022-1801 is a high-severity Guessable CAPTCHA vulnerability in the VS Contact Form WordPress plugin, affecting versions <= 11.5. It carries a CVSS score of 7.2 (reachable over the network; low attack complexity). Exploitation requires no authentication. The issue is fixed in version 11.6; sites on affected versions should update now. Disclosed May 2022, reported by Sebastian Cruz Cardona.
Vulnerability Overview
The plugin Very Simple Contact Form in versions up to and including 11.4 uses a captcha that can be bypassed by bots. Version 11.5 removes the captcha code leaving the contact form vulnerable.
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 privileges on the target site, and no interaction from a victim user.
CWE-804: Guessable CAPTCHA
The product uses a CAPTCHA challenge, but the challenge can be guessed or automatically recognized by a non-human actor.
Remediation
Update to version 11.6, or a newer patched version
How does WordSec protect against this?
Because it turns on account access, WordSec's login security is the relevant layer: role-based two-factor, captcha and brute-force limits raise the cost of getting the account this needs. None of that substitutes for the fix: VS Contact Form 11.6 closes this, and updating the plugin is the step that ends it.
- Login Security
- Alerts
External References
Related records
Same weakness class
Other vulnerabilities in VS Contact Form
Vulnerability data © Defiant, Inc., provided under the Wordfence Intelligence T&C