Strategic Overview
- Status
- Patched in 1.5.5
- Affected Plugin
- Simple Event Planner
- Affected Version
<= 1.5.4- CVSS
- 4.1Medium
- Weakness type
- CWE-79 · Improper Neutralization of Input During Web Page Generation ('Cross-site Scripting')
- CVE
CVE-2022-25612
At a glance
CVE-2022-25612 is a medium-severity Improper Neutralization of Input During Web Page Generation ('Cross-site Scripting') vulnerability in the Simple Event Planner WordPress plugin, affecting versions <= 1.5.4. It carries a CVSS score of 4.1 (reachable over the network; low attack complexity). The issue is fixed in version 1.5.5; sites on affected versions should update now. Disclosed March 2022, reported by R3N0.
Vulnerability Overview
Multiple Authenticated Persistent Cross-Site Scripting (XSS) vulnerabilities in Simple Event Planner WordPress plugin <= 1.5.4 allows user with author or higher user rights inject the malicious code via vulnerable parameters: &custom[event_organiser], &custom[organiser_email], &custom[organiser_contact].
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 Simple Event Planner <= 1.5.4 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 Simple Event Planner the fix is 1.5.5: builds <= 1.5.4 are affected, anything from 1.5.5 onward is not.
Remediation
Update to version 1.5.5, or a newer patched version
How does WordSec protect against this?
The attempt arrives as an ordinary request to Simple Event Planner: WordSec's web application firewall inspects request payloads before WordPress loads them. None of that substitutes for the fix: Simple Event Planner 1.5.5 closes this, and updating the plugin is the step that ends it.
- Firewall
- Alerts
External References
Related records
Same weakness class
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