CVE-2026-57637: CSRF Vulnerability in Abandoned Cart Lite for WooCommerce Up To 6.8.0

Technical summary

CVE-2026-57637 is an unauthenticated CSRF vulnerability in Abandoned Cart Lite for WooCommerce versions 6.8.0 and earlier, stemming from inadequate CSRF token validation (CWE-352). The vulnerability allows an attacker to construct a request that exploits the trust a user's browser maintains with their WordPress installation. When a site administrator accesses an attacker-controlled webpage while authenticated to WordPress, the malicious page can issue requests to the Abandoned Cart Lite plugin's endpoints—such as configuration changes, email template modifications, or data actions—without explicit consent. The plugin fails to properly validate nonce or similar anti-CSRF tokens on sensitive operations.

Business impact

Compromised plugin settings can disrupt e-commerce workflows: cart recovery emails may be disabled, redirected, or modified to include phishing content; email templates could be injected with malware or scam messaging; and recovery rules may be altered to prevent legitimate customer notifications. For WooCommerce store owners relying on this plugin for conversion recovery, the impact is primarily operational and reputational. If email templates are modified to include malicious links or phishing, customers may lose trust. Revenue recovery through abandoned cart reminders could be disrupted. While the vulnerability itself does not directly expose customer payment data, compromised email flows could be weaponized to harvest credentials or distribute malware to the merchant's customer base.

Affected systems

Abandoned Cart Lite for WooCommerce version 6.8.0 and all earlier versions are affected. The plugin is hosted on wordpress.org and is used by WooCommerce store owners to recover abandoned shopping carts through automated email reminders. Any WordPress installation running this plugin up to and including version 6.8.0 is vulnerable if its administrator visits a malicious site while authenticated to WordPress. Patched versions above 6.8.0 have addressed the CSRF vulnerability.

Exploitability

This vulnerability requires user interaction: an administrator or user with plugin management permissions must visit an attacker-controlled website while authenticated to their WordPress admin panel. The attack surface is moderate because it relies on social engineering to trick a user into visiting a malicious page—for example, through a phishing email, malicious ad, or compromised third-party website. No complex technical skills are required to craft a CSRF payload; standard HTML forms or image tags suffice. The lack of authentication requirements and simple attack mechanics make this straightforward to exploit in targeted scenarios, though mass exploitation is less practical. The CVSS score of 4.3 (MEDIUM) reflects the requirement for user interaction and the limited scope of impact (integrity only, no confidentiality or availability loss).

Remediation

Update Abandoned Cart Lite for WooCommerce to a version newer than 6.8.0 immediately. The vendor has released patched versions that include proper CSRF token validation. After patching, clear any browser caches and ensure all administrators log out and back in to establish fresh sessions. Review plugin configuration to confirm no unauthorized changes were made during the window the plugin was unpatched. For site administrators unable to update immediately, consider temporarily disabling the plugin or restricting WordPress admin access to trusted IP addresses, though these are workarounds rather than solutions.

Patch guidance

Verify that you are running Abandoned Cart Lite for WooCommerce version 6.8.1 or later by checking the plugin settings in your WordPress admin panel (Plugins > Installed Plugins). Update via the WordPress plugin dashboard: navigate to Plugins, locate Abandoned Cart Lite for WooCommerce, and click 'Update Now' if an update is available. Alternatively, download the latest version directly from the official wordpress.org plugin repository. After updating, test cart recovery functionality to ensure email notifications still send correctly and that no prior configuration changes persist from potential unauthorized modifications.

Detection guidance

Monitor WordPress admin access logs for unusual activity from unfamiliar IP addresses or locations, particularly if an administrator accessed external sites before configuration changes occurred. Look for audit entries showing modifications to the Abandoned Cart Lite plugin settings (email templates, recovery rules, or sender addresses) that administrators do not recognize. Implement WordPress security logging and alerting (using plugins like Wordfence or similar) to capture failed CSRF token validations or suspicious plugin configuration changes. Review email logs for unintended template modifications or unexpected sender address changes. Inspect administrator browser history if possible to identify visits to untrusted sites during the vulnerability window.

Why prioritize this

This vulnerability warrants prompt but not critical prioritization. The MEDIUM severity and user interaction requirement mean it is not an immediate, mass-exploitable threat. However, it should be patched within a standard maintenance window (1-2 weeks) because: (1) CSRF vulnerabilities affecting plugin settings can lead to operational disruption and customer trust issues; (2) the plugin is widely used in the WooCommerce ecosystem; (3) the patch is straightforward to deploy; and (4) email template modification could enable downstream phishing or malware distribution. Prioritize this above low-severity vulnerabilities but below unpatched critical RCE or authentication bypasses.

Risk score, explained

The CVSS 3.1 score of 4.3 (MEDIUM) is justified by the attack vector (network), low attack complexity, no privilege requirements, but critical user interaction requirement (the UI flag). Integrity is impacted (plugin settings modified), but confidentiality and availability are not directly affected. The 'Required Interaction' constraint significantly reduces the score from what would otherwise be a higher rating if this were an unauthenticated without-click attack. The vulnerability poses a credible risk to e-commerce operations and customer communication, but not an imminent widespread threat to all installations.

Frequently asked questions