CVE-2026-2127

SiteOrigin Widgets Bundle <= 1.70.4 - Missing Authorization to Authenticated (Subscriber+) Arbitrary Shortcode Execution

2026-02-17 20:23
bashu

Strategic Overview

Status
Patched in 1.71.0
Affected Plugin
SiteOrigin Widgets Bundle
Affected Version
<= 1.70.4
CVSS
5.4Medium
Weakness type
CWE-862 · Missing Authorization
CVE
CVE-2026-2127
View all SiteOrigin Widgets Bundle vulnerabilities

At a glance

CVE-2026-2127 is a medium-severity Missing Authorization vulnerability in the SiteOrigin Widgets Bundle WordPress plugin, affecting versions <= 1.70.4. It carries a CVSS score of 5.4 (reachable over the network; low attack complexity). Exploitation requires an authenticated account at Subscriber level or above. The issue is fixed in version 1.71.0; sites on affected versions should update now. Disclosed February 2026, reported by bashu.

Vulnerability Overview

The SiteOrigin Widgets Bundle plugin for WordPress is vulnerable to unauthorized arbitrary shortcode execution in all versions up to, and including, 1.70.4. This is due to a missing capability check on the `siteorigin_widget_preview_widget_action()` function which is registered via the `wp_ajax_so_widgets_preview` AJAX action. The function only verifies a nonce (`widgets_action`) but does not check user capabilities. This makes it possible for authenticated attackers, with Subscriber-level access and above, to execute arbitrary shortcodes by invoking the `SiteOrigin_Widget_Editor_Widget` via the preview endpoint. The required nonce is exposed on the public frontend when the Post Carousel widget is present on a page, embedded in the `data-ajax-url` HTML attribute.

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-862: Missing Authorization

SiteOrigin Widgets Bundle <= 1.70.4 carries this weakness at siteorigin_widget_preview_widget_action(), and reaching it takes an account at Subscriber level or above. A missing authorization check means a function is reachable by anyone who can reach the endpoint, because the code never asks whether the caller is allowed to perform the action.

Any user who can reach the endpoint gets to run an action reserved for higher-privileged roles, from reading protected data to changing settings or content. For SiteOrigin Widgets Bundle the fix is 1.71.0: builds <= 1.70.4 are affected, anything from 1.71.0 onward is not.

Remediation

Update to version 1.71.0, 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: SiteOrigin Widgets Bundle 1.71.0 closes this, and updating the plugin is the step that ends it.

  • Login Security
  • Alerts

External References

https://www.cve.org/CVERecord?id=CVE-2026-2127https://www.wordfence.com/threat-intel/vulnerabilities/id/bf92c64b-ca76-4af7-a1e4-585a60b03153https://nvd.nist.gov/vuln/detail/CVE-2026-2127

Related records

Vulnerability data © Defiant, Inc., provided under the Wordfence Intelligence T&C