An XSS vulnerability exists in versions of Pterodactyl Panel before 0.7.19. Affected versions do not properly sanitize account names before rendering them to the dropdown selector in the admin area when creating or modifying a server.
This XSS has been addressed in 0.7.19 and will be rolled forwards into the 1.0-rc.7 release.
No workaround exists without manual patching. See https://github.com/pterodactyl/panel/pull/2441/files for the files changed.
If you have any questions or comments about this advisory please reach out on Discord, or by emailing dane at pterodactyl dot io.
Thank you to Sergej for the responsible disclosure of this issue.
| Software | From | Fixed in |
|---|---|---|
pterodactyl / panel
|
- | 0.7.19 |
pterodactyl / panel
|
1.0.0-rc.0 | 1.0.0-rc.7 |
A security vulnerability is a weakness in software, hardware, or configuration that can be exploited to compromise confidentiality, integrity, or availability. Many vulnerabilities are tracked as CVEs (Common Vulnerabilities and Exposures), which provide a standardized identifier so teams can coordinate patching, mitigation, and risk assessment across tools and vendors.
CVSS (Common Vulnerability Scoring System) estimates technical severity, but it doesn't automatically equal business risk. Prioritize using context like internet exposure, affected asset criticality, known exploitation (proof-of-concept or in-the-wild), and whether compensating controls exist. A "Medium" CVSS on an exposed, production system can be more urgent than a "Critical" on an isolated, non-production host.
A vulnerability is the underlying weakness. An exploit is the method or code used to take advantage of it. A zero-day is a vulnerability that is unknown to the vendor or has no publicly available fix when attackers begin using it. In practice, risk increases sharply when exploitation becomes reliable or widespread.
Recurring findings usually come from incomplete Asset Discovery, inconsistent patch management, inherited images, and configuration drift. In modern environments, you also need to watch the software supply chain: dependencies, containers, build pipelines, and third-party services can reintroduce the same weakness even after you patch a single host. Unknown or unmanaged assets (often called Shadow IT) are a common reason the same issues resurface.
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