underConstruction <= 1.19 - Cross-Site Request Forgery to Construction Mode Disabled
Strategic Overview
- Status
- Patched in 1.20
- Affected Plugin
- underConstruction
- Affected Version
< 1.20- CVSS
- 8.8High
- Weakness type
- CWE-352 · Cross-Site Request Forgery (CSRF)
- CVE
CVE-2022-1895
At a glance
CVE-2022-1895 is a high-severity Cross-Site Request Forgery (CSRF) vulnerability in the underConstruction WordPress plugin, affecting versions < 1.20. It carries a CVSS score of 8.8 (reachable over the network; low attack complexity; high confidentiality, integrity, availability impact). Exploitation requires no authentication. The issue is fixed in version 1.20; sites on affected versions should update now. Disclosed May 2022, reported by Daniel Ruf.
Vulnerability Overview
The underConstruction WordPress plugin before 1.20 does not have CSRF check in place when deactivating the construction mode, which could allow attackers to make a logged in admin perform such action via a CSRF attack
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. A successful exploit has high impact on confidentiality, integrity, availability — full site compromise territory.
CWE-352: Cross-Site Request Forgery (CSRF)
Reaching this weakness in underConstruction < 1.20 takes a caller who can reach the endpoint. Cross-site request forgery abuses the fact that browsers attach a victim's cookies to any request, so a state-changing action that only checks who you are, not whether you meant to act, can be triggered from another site.
An attacker who gets a logged-in user to load a crafted page can perform that action as them, with the impact scaling to whatever the victim's role is allowed to do. For underConstruction the fix is 1.20: builds < 1.20 are affected, anything from 1.20 onward is not.
Remediation
Update to version 1.20, or a newer patched version
How does WordSec protect against this?
The attempt arrives as an ordinary request to underConstruction: WordSec's web application firewall inspects request payloads before WordPress loads them. None of that substitutes for the fix: underConstruction 1.20 closes this, and updating the plugin is the step that ends it.
- Firewall
- Alerts
External References
Related records
Same weakness class
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