CURCY <= 2.2.14 - Unauthenticated Arbitrary Shortcode Execution via 'exchange' Parameter
The The CURCY – Multi Currency for WooCommerce – Smoothly on WooCommerce 9.x plugin for WordPress is vulnerable to arbitrary shortcode execution in all versions up to, and including, 2.2.14. This is due to the software allowing users to execute an action that does not properly validate a value before running do_shortcode. This makes it possible for unauthenticated attackers to execute arbitrary shortcodes.
Quick answer
CURCY – Multi Currency for WooCommerce – Smoothly on WooCommerce 9.x should be reviewed and updated if it matches the affected versions. The recommended fix is to apply the vendor-supported patched version or the mitigation steps below, then retest the public website with Fixnx.
Who is affected
Affected versions
- *-2.2.14
Fixed versions
- 2.2.15
How to fix it
CURCY – Multi Currency for WooCommerce – Smoothly on WooCommerce 9.x is affected by CVE-2026-11778, a the reported vulnerability issue in versions *-2.2.14. Prioritize production WooCommerce and customer-data workflows first. The recommended remediation is to update to version 2.2.15 or a newer vendor-supported patched release. If immediate patching is not possible, reduce exposure, restrict access to the vulnerable workflow, and monitor logs until the vendor-supported fix is in place.
- Inventory every WordPress site that uses CURCY – Multi Currency for WooCommerce – Smoothly on WooCommerce 9.x, including production, staging, multisite, customer, and managed environments.
- Confirm the installed plugin or theme version and compare it with versions *-2.2.14 from the linked advisory.
- Apply the remediation: update to version 2.2.15 or a newer vendor-supported patched release.
- If the update cannot be applied immediately, disable CURCY – Multi Currency for WooCommerce – Smoothly on WooCommerce 9.x, remove unused roles that can reach the vulnerable feature, and restrict the affected admin, REST, shortcode, upload, booking, ecommerce, review, or content workflow.
- Review application, web server, security plugin, WAF, authentication, and administrator activity logs for attempts related to CVE-2026-11778.
- Rotate administrator sessions, API keys, webhook secrets, database credentials, and integration tokens if logs or file/content review suggest compromise.
- Clear application, object, page, CDN, and browser caches after remediation so vulnerable assets, stored payloads, or stale responses are not served.
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Verify the fix
- Confirm CURCY – Multi Currency for WooCommerce – Smoothly on WooCommerce 9.x is no longer running versions *-2.2.14 and record the patched or mitigated version in the remediation ticket.
- Verify unauthenticated, subscriber, contributor, author, editor, shop manager, booking, vendor, or custom-role users can no longer trigger the affected action.
- Review logs before and after the fix for exploitation attempts, unexpected content changes, suspicious admin actions, or database/file access.
- Rerun a Fixnx scan and any relevant plugin, WAF, or manual regression checks to confirm public exposure is reduced.
- Document the advisory link, affected assets, remediation action, verification evidence, and any cleanup or credential rotation performed.
Related categories
Trusted references
FAQ
What is affected by CVE-2026-11778?
CURCY – Multi Currency for WooCommerce – Smoothly on WooCommerce 9.x versions listed as affected should be reviewed: *-2.2.14.
What should I fix first?
Start with internet-facing sites, admin panels, login flows, plugins, themes, modules, packages, and systems that process user-controlled input or sensitive data.
How do I confirm the fix worked?
Apply the patched version or mitigation, clear caches where relevant, retest the affected workflow, and run a new Fixnx scan to verify public website exposure signals.
How are Fixnx security risk categories chosen?
Fixnx keeps one canonical risk page and assigns only broad, relevant categories such as ecosystem, technology area, or vulnerability class.