SilverStripe’s Sour Note: XSS Exploit Hits High C!
Beware of SilverStripe 5.3.8’s sneaky XSS vulnerability—turns out, inserting media isn’t just for cat videos anymore! With a little oEmbed magic and unsanitized HTML, an attacker can inject a script that plays nice on both the CMS and front-end. It’s like a surprise party, but with way less cake and way more security headaches.

Hot Take:
Ah, SilverStripe! For a CMS that’s supposed to make web development a breeze, it’s certainly making it easy for hackers to throw a party with their cross-site scripting (XSS) antics. If your website’s security is starting to resemble Swiss cheese, it’s time to plug those holes before the mice start throwing a rave! It’s a classic case of “with great power comes great responsibility” — and evidently, a little bit of chaos.
Key Points:
- SilverStripe version 5.2.22 is vulnerable to Stored Cross Site Scripting (XSS).
- The vulnerability is associated with the “insert media” functionality using oEmbed JSON.
- Malicious scripts can be introduced through unsanitized HTML attributes.
- An attacker needs valid login credentials with page edit rights.
- The exploit affects both the CMS backend and the website’s front end.