Details have emerged about a now-patched vulnerability in Azure Service Fabric Explorer (SFX) that could lead to unauthenticated remote code execution. Tracked as CVE-2023-23383 (CVSS score: 8.2), the issue has been dubbed "Super FabriXss" by Orca Security, a nod to the FabriXss flaw (CVE-2022-35829, CVSS score: 6.2) that was fixed by Microsoft in October 2022. "The Super FabriXss vulnerability enables remote attackers to leverage an XSS vulnerability to achieve remote code execution on a container hosted on a Service Fabric node without the need for authentication," security researcher Lidor Ben Shitrit said in a report shared with The Hacker News. XSS refers to a kind of client-side code injection attack that makes it possible to upload malicious scripts into otherwise trusted websites. The scripts then get executed every time a victim visits the compromised website, thereby leading to unintended consequences. While both FabriXss and Super FabriXss are XSS flaws, Super FabriXss has more severe implications in that it could be weaponized to execute code and potentially gain control of susceptible systems. Super FabriXss, which resides in the "Events" tab associated with each node in the cluster from the user interface, is also a reflected XSS flaw, meaning the script is embedded into a link, and is only triggered when the link is clicked. What is an XSS flaw? XSS, or cross-site scripting, is a type of security vulnerability that allows attackers to inject malicious code into websites. This code is then executed by unsuspecting users who visit the compromised website, resulting in unintended consequences. While both FabriXss and Super FabriXss are XSS flaws, Super FabriXss has more severe implications in that it could be weaponized to execute code and potentially gain control of susceptible systems. What is the Super FabriXss vulnerability? The Super FabriXss vulnerability is a reflected XSS flaw that allows attackers to inject malicious code into a website hosted on a Service Fabric node. This code is then executed by unsuspecting users who visit the compromised website, resulting in unintended consequences. What are the consequences of the Super FabriXss vulnerability? The consequences of the Super FabriXss vulnerability can be severe, as it can be used to gain control of susceptible systems. In the hands of a skilled attacker, this flaw could be used to launch attacks against other websites or systems, steal sensitive data, or even take over the entire system. How can I protect myself from the Super FabriXss vulnerability? The best way to protect yourself from the Super FabriXss vulnerability is to ensure that you are running the latest version of Azure Service Fabric Explorer. Microsoft has already released a patch for this flaw, so updating to the latest version is the best way to protect yourself.