Video Lessons Manager < 1.7.2 and Video Lessons Manager Pro < 3.5.9 - Stored Cross-Site Scripting
Strategic Overview
- Status
- Patched in 1.7.2
- Affected Version
<= 1.7.1- CVSS
- 5.5Medium
- Weakness type
- CWE-79 · Improper Neutralization of Input During Web Page Generation ('Cross-site Scripting')
- CVE
CVE-2021-24713
At a glance
CVE-2021-24713 is a medium-severity Improper Neutralization of Input During Web Page Generation ('Cross-site Scripting') vulnerability in the CM Video Lessons Manager WordPress plugin, affecting versions <= 1.7.1. It carries a CVSS score of 5.5 (reachable over the network; low attack complexity). The issue is fixed in version 1.7.2; sites on affected versions should update now. Disclosed October 2021, reported by Shivam Rai.
Vulnerability Overview
The Video Lessons Manager WordPress plugin before 1.7.2 and Video Lessons Manager Pro WordPress plugin before 3.5.9 do not properly sanitize and escape values when updating their settings, which could allow high privilege users to perform Cross-Site Scripting attacks
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')
Reaching this weakness in CM Video Lessons Manager <= 1.7.1 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 CM Video Lessons Manager the fix is 1.7.2: builds <= 1.7.1 are affected, anything from 1.7.2 onward is not.
Remediation
Update to version 1.7.2, or a newer patched version
How does WordSec protect against this?
The attempt arrives as an ordinary request to CM Video Lessons Manager: WordSec's web application firewall inspects request payloads before WordPress loads them. None of that substitutes for the fix: CM Video Lessons Manager 1.7.2 closes this, and updating the plugin is the step that ends it.
- Firewall
- Alerts
External References
Related records
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