Coming soon and Maintenance mode <= 3.6.6 - Missing Authorization to Arbitrary Email Send
Strategic Overview
- Status
- Patched in 3.6.7
- Affected Plugin
- Coming soon and Maintenance mode
- Affected Version
<= 3.6.6- CVSS
- 4.3Medium
- Weakness type
- CWE-863 · Incorrect Authorization
- CVE
CVE-2022-0164
At a glance
CVE-2022-0164 is a medium-severity Incorrect Authorization vulnerability in the Coming soon and Maintenance mode WordPress plugin, affecting versions <= 3.6.6. It carries a CVSS score of 4.3 (reachable over the network; low attack complexity). The root cause is a missing authorization check on a reachable function. The issue is fixed in version 3.6.7; sites on affected versions should update now. Disclosed January 2022, reported by Krzysztof Zając.
Vulnerability Overview
The Coming soon and Maintenance mode WordPress plugin before 3.6.8 does not have authorisation and CSRF checks in its coming_soon_send_mail AJAX action, allowing any authenticated users, with a role as low as subscriber to send arbitrary emails to all subscribed users.
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.
CWE-863: Incorrect Authorization
Reaching this weakness in Coming soon and Maintenance mode <= 3.6.6 takes a caller who can reach the endpoint. Incorrect authorization means a permission check exists but evaluates the wrong thing, so it passes for callers it was meant to stop.
The action runs for users the code intended to exclude, with the same effect as having no check at all. For Coming soon and Maintenance mode the fix is 3.6.7: builds <= 3.6.6 are affected, anything from 3.6.7 onward is not.
Remediation
Update to version 3.6.7, 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: Coming soon and Maintenance mode 3.6.7 closes this, and updating the plugin is the step that ends it.
- Login Security
- Alerts
External References
Related records
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