Happy Addons for Elementor <= 2.23.0 & Pro Version < 1.17.0 - Stored Cross-Site Scripting
Strategic Overview
- Status
- Patched in 1.17.0
- Affected Plugin
- Happy Addons for Elementor Pro
- Affected Version
< 1.17.0- CVSS
- 6.4Medium
- Weakness type
- CWE-79 · Improper Neutralization of Input During Web Page Generation ('Cross-site Scripting')
- CVE
CVE-2021-24292
At a glance
CVE-2021-24292 is a medium-severity Improper Neutralization of Input During Web Page Generation ('Cross-site Scripting') vulnerability in the Happy Addons for Elementor Pro WordPress plugin, affecting versions < 1.17.0. It carries a CVSS score of 6.4 (reachable over the network; low attack complexity). The issue is fixed in version 1.17.0; sites on affected versions should update now. Disclosed April 2021, reported by Ram.
Vulnerability Overview
The Happy Addons for Elementor WordPress plugin before 2.24.0, Happy Addons Pro for Elementor WordPress plugin before 1.17.0 have a number of widgets that are vulnerable to stored Cross-Site Scripting(XSS) by lower-privileged users such as contributors, all via a similar method: The “Card” widget accepts a “title_tag” parameter. Although the element control lists a fixed set of possible html tags, it is possible to send a ‘save_builder’ request with the “heading_tag” set to “script”, and the actual “title” parameter set to JavaScript to be executed within the script tags added by the “heading_tag” parameter.
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-79: Improper Neutralization of Input During Web Page Generation ('Cross-site Scripting')
Happy Addons for Elementor Pro < 1.17.0 carries this weakness at Card, and reaching it takes a caller who can reach the endpoint. Cross-site scripting happens when input from a request is written into a page without being escaped for the context it lands in, so the browser parses attacker-supplied text as markup or script.
Injected script runs with the privileges of whoever views the affected page, which is how these flaws turn into administrator session theft, silent account creation or persistent backdoors in page content. For Happy Addons for Elementor Pro the fix is 1.17.0: builds < 1.17.0 are affected, anything from 1.17.0 onward is not.
Remediation
Update to version 1.17.0, or a newer patched version
How does WordSec protect against this?
The attempt arrives as an ordinary request to Happy Addons for Elementor Pro: WordSec's web application firewall inspects request payloads before WordPress loads them. None of that substitutes for the fix: Happy Addons for Elementor Pro 1.17.0 closes this, and updating the plugin is the step that ends it.
- Firewall
- Alerts
External References
Related records
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