Strategic Overview
- Status
- Patched in 2.0.0
- Affected Plugin
- Cartpauj Register Captcha
- Affected Version
<= 1.0.02- CVSS
- 5.3Medium
- Weakness type
- CWE-804 · Guessable CAPTCHA
- CVE
CVE-2023-40673
At a glance
CVE-2023-40673 is a medium-severity Guessable CAPTCHA vulnerability in the Cartpauj Register Captcha WordPress plugin, affecting versions <= 1.0.02. It carries a CVSS score of 5.3 (reachable over the network; low attack complexity). Exploitation requires no authentication. The issue is fixed in version 2.0.0; sites on affected versions should update now. Disclosed August 2023, reported by qilin_99.
Vulnerability Overview
The Cartpauj Register Captcha plugin for WordPress is vulnerable to CAPTCHA Bypass in versions up to, and including, 1.0.02. This makes it possible for unauthenticated attackers to bypass the Captcha Verification.
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 2.0.0, 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: Cartpauj Register Captcha 2.0.0 closes this, and updating the plugin is the step that ends it.
- Login Security
- Alerts
External References
Vulnerability data © Defiant, Inc., provided under the Wordfence Intelligence T&C