Instantio – WooCommerce Quick Checkout | Instant Checkout, Side Cart & Popup Cart <= 1.2.5 - Cross Site Request Forgery
Strategic Overview
- Status
- Patched in 1.2.6
- Affected Plugin
- Instantio — Side Cart & One-Page Checkout for WooCommerce
- Affected Version
<= 1.2.5- CVSS
- 8.8High
- Weakness type
- CWE-352 · Cross-Site Request Forgery (CSRF)
- CVE
CVE pending
At a glance
This record tracks a high-severity Cross-Site Request Forgery (CSRF) vulnerability in the Instantio WordPress plugin, affecting versions <= 1.2.5. 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 1.2.6; sites on affected versions should update now. Disclosed June 2021, reported by WPScanTeam.
Vulnerability Overview
The Instantio – WooCommerce Quick Checkout | Instant Checkout, Side Cart & Popup Cart plugin for WordPress is vulnerable to Cross-Site Request Forgery in versions up to, and including, 1.2.5. This is due to missing or incorrect nonce validation on the instantio_lite_ajax_quickview_variable_products function. This makes it possible for unauthenticated attackers to add products to a cart via a forged request granted they can trick a site user into performing an action such as clicking on a link.
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 Instantio <= 1.2.5 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 Instantio the fix is 1.2.6: builds <= 1.2.5 are affected, anything from 1.2.6 onward is not.
Remediation
Update to version 1.2.6, or a newer patched version
How does WordSec protect against this?
The attempt arrives as an ordinary request to Instantio: WordSec's web application firewall inspects request payloads before WordPress loads them. None of that substitutes for the fix: Instantio 1.2.6 closes this, and updating the plugin is the step that ends it.
- Firewall
- Alerts
External References
Related records
Other vulnerabilities in Instantio — Side Cart & One-Page Checkout for WooCommerce
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