Strategic Overview
- Status
- Patched in 1.3.6
- Affected Plugin
- WP Reactions Lite
- Affected Version
< 1.3.6- CVSS
- 5.4Medium
- Weakness type
- CWE-79 · Improper Neutralization of Input During Web Page Generation ('Cross-site Scripting')
- CVE
CVE-2021-24723
At a glance
CVE-2021-24723 is a medium-severity Improper Neutralization of Input During Web Page Generation ('Cross-site Scripting') vulnerability in the WP Reactions Lite WordPress plugin, affecting versions < 1.3.6. It carries a CVSS score of 5.4 (reachable over the network; low attack complexity). The issue is fixed in version 1.3.6; sites on affected versions should update now. Disclosed September 2021, reported by Shivam Rai.
Vulnerability Overview
The WP Reactions Lite WordPress plugin before 1.3.6 does not properly sanitize inputs within wp-admin pages, allowing users with sufficient access to inject XSS payloads within /wp-admin/ pages.
Technical Analysis
The vector marks this flaw as remotely reachable over the network, with low attack complexity — no special timing or configuration is needed.
CWE-79: Improper Neutralization of Input During Web Page Generation ('Cross-site Scripting')
Reaching this weakness in WP Reactions Lite < 1.3.6 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 WP Reactions Lite the fix is 1.3.6: builds < 1.3.6 are affected, anything from 1.3.6 onward is not.
Remediation
Update to version 1.3.6, or a newer patched version
How does WordSec protect against this?
The attempt arrives as an ordinary request to WP Reactions Lite: WordSec's web application firewall inspects request payloads before WordPress loads them. None of that substitutes for the fix: WP Reactions Lite 1.3.6 closes this, and updating the plugin is the step that ends it.
- Firewall
- Alerts
External References
Related records
Other vulnerabilities in WP Reactions Lite
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