GHSA-mgr9-6c2j-jxrq: Pterodactyl/panel Cross-Site Scripting Vulnerability

LOW
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CWE-79
Published
Advisory Summary

GHSA-mgr9-6c2j-jxrq is a LOW cross-site scripting vulnerability (CWE-79: Improper Neutralization of Input During Web Page Generation ('Cross-site Scripting')) affecting Pterodactyl/panel libraries in the Packagist ecosystem. The issue involves pterodactyl has a reflected xss vulnerability in “create new database host”. Remediation is available by upgrading affected packages to version 1.12.0.

GHSA-mgr9-6c2j-jxrq at a Glance

CVE Identifier N/A
GHSA Identifier GHSA-mgr9-6c2j-jxrq
Severity LOW
CVSS v3.1 Base Score N/A
CWE Classification CWE-79: Improper Neutralization of Input During Web Page Generation ('Cross-site Scripting')
Affected Product Pterodactyl/panel
Package Ecosystem Packagist
Published Date
Last Updated

How to Fix GHSA-mgr9-6c2j-jxrq

To remediate this vulnerability, upgrade all affected Pterodactyl/panel dependencies to a patched release. Both direct and transitive dependencies should be checked, as frameworks or security libraries may pull in vulnerable versions transitively.

pterodactyl/panel fixed: 1.12.0 
Upgrade pterodactyl/panel to 1.12.0
Verify Direct and Transitive Dependencies

Run the following command in your project directory to verify that all resolved dependencies use the patched release: 

inspect dependencies for pterodactyl/panel

How to Check if You Are Affected

To determine whether your application is affected by GHSA-mgr9-6c2j-jxrq, inspect your project dependencies for Pterodactyl/panel:

inspect dependencies for pterodactyl/panel

Analyze the terminal output to locate any version of Pterodactyl/panel in your dependency tree. If any resolved version matches the vulnerable ranges listed in the table below (for example, versions earlier than 1.12.0), your application is affected.

Note: Verify declared build manifests and deployed runtime container environments.

Technical Details

Vulnerability Mechanism & Technical Analysis

This vulnerability is classified under CWE-79: Improper Neutralization of Input During Web Page Generation ('Cross-site Scripting'), where the product does not neutralize or incorrectly neutralizes user-controllable input before it is placed in output that is used as a web page that is served to other users. In Pterodactyl/panel, software state validation or input boundaries are circumvented during processing. Review the official source advisory statement below for specific affected components, classes, and reproduction details.

Source Advisory Statement

> [!NOTE] > Message from the Pterodactyl team: > > The Pterodactyl team has evaluated this as a minor security issue but does not consider it something that should be assigned a CVE, nor does it require active patching by vulnerable systems. > > This issue is entirely self-inflicted and requires an administrative user paste an _obviously_ incorrect value into a database host field, submit it, and run into the XSS when the error message is rendered. However, we have determined that this fix is good security hygiene and may prevent issues in other areas not yet discovered. ### Summary When an administrative user creates a new database host they are prompted to provide a `Host` value which is expected to be a domain or IP address. When an invalid value is encountered and passed back to `gethostaddr` and/or directly to the MySQL connection tooling, an error is returned. This error is then passed back along to the front-end, but was not properly sanitized when rendered. Therefore it is possible for an admin to _knowingly_ paste a malicious payload such as `<script>prompt(document.domain)</script>` into the `Host` field and XSS themselves.

GHSA-mgr9-6c2j-jxrq Affected Pterodactyl/panel Versions

1 component(s)
Fixed Versions:
1.12.0
Product / Package Ecosystem Affected Versions Fixed Version
pterodactyl/panel
 Packagist
< 1.12.0
1.12.0

References

GitHub Advisory / Wiki ADVISORY
https://github.com/pterodactyl/panel/security/advisories/GHSA-mgr9-6c2j-jxrq
Security Fix Commit FIX COMMIT
https://github.com/pterodactyl/panel/commit/1570ff250939b75b3ba8cd03e5025d8293544ed4
Pterodactyl/panel Source Repository REPOSITORY
https://github.com/pterodactyl/panel

Frequently Asked Questions

What is GHSA-mgr9-6c2j-jxrq?
GHSA-mgr9-6c2j-jxrq is a security vulnerability in Pterodactyl/panel involving Pterodactyl has a Reflected XSS vulnerability in “Create New Database Host” under CWE-79: Improper Neutralization of Input During Web Page Generation ('Cross-site Scripting').
Which Pterodactyl/panel versions are affected?
Affected versions include releases prior to 1.12.0 across affected packages: pterodactyl/panel.
What version fixes GHSA-mgr9-6c2j-jxrq?
Upgrading to 1.12.0 (or the latest patched release for your respective branch) resolves the vulnerability.
Is pterodactyl/panel affected?
Yes, pterodactyl/panel is affected in releases prior to 1.12.0. Upgrade your dependency to 1.12.0 or later.
What CWE is associated with GHSA-mgr9-6c2j-jxrq?
GHSA-mgr9-6c2j-jxrq is classified under CWE-79: Improper Neutralization of Input During Web Page Generation ('Cross-site Scripting') (The product does not neutralize or incorrectly neutralizes user-controllable input before it is placed in output that is used as a web page that is served to other users.).
How can I check Packagist dependencies for GHSA-mgr9-6c2j-jxrq?
Run the dependency tree command: 'inspect dependencies for pterodactyl/panel'. This command lists direct and transitive dependencies in your build configuration so you can verify if a vulnerable version is resolved.
Machine-readable OSV JSON OSV v1.5 Schema
Normalized schema output
View Raw JSON 
{
  "schema_version" : "1.4.0",
  "id" : "GHSA-mgr9-6c2j-jxrq",
  "modified" : "2025-12-30T15:13:52Z",
  "published" : "2025-12-30T15:13:52Z",
  "aliases" : [ ],
  "summary" : "Pterodactyl has a Reflected XSS vulnerability in “Create New Database Host”",
  "details" : "> [!NOTE]\n> Message from the Pterodactyl team:\n>\n> The Pterodactyl team has evaluated this as a minor security issue but does not consider it something that should be assigned a CVE, nor does it require active patching by vulnerable systems.\n>\n> This issue is entirely self-inflicted and requires an administrative user paste an _obviously_ incorrect value into a database host field, submit it, and run into the XSS when the error message is rendered. However, we have determined that this fix is good security hygiene and may prevent issues in other areas not yet discovered.\n\n### Summary\nWhen an administrative user creates a new database host they are prompted to provide a `Host` value which is expected to be a domain or IP address. When an invalid value is encountered and passed back to `gethostaddr` and/or directly to the MySQL connection tooling, an error is returned. This error is then passed back along to the front-end, but was not properly sanitized when rendered.\n\nTherefore it is possible for an admin to _knowingly_ paste a malicious payload such as `<script>prompt(document.domain)</script>` into the `Host` field and XSS themselves.",
  "severity" : [ {
    "type" : "CVSS_V4",
    "score" : "CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:A/VC:L/VI:L/VA:N/SC:N/SI:N/SA:N/E:P"
  } ],
  "affected" : [ {
    "package" : {
      "ecosystem" : "Packagist",
      "name" : "pterodactyl/panel"
    },
    "ranges" : [ {
      "type" : "ECOSYSTEM",
      "events" : [ {
        "introduced" : "0"
      }, {
        "fixed" : "1.12.0"
      } ]
    } ]
  } ],
  "references" : [ {
    "type" : "WEB",
    "url" : "https://github.com/pterodactyl/panel/security/advisories/GHSA-mgr9-6c2j-jxrq"
  }, {
    "type" : "WEB",
    "url" : "https://github.com/pterodactyl/panel/commit/1570ff250939b75b3ba8cd03e5025d8293544ed4"
  }, {
    "type" : "PACKAGE",
    "url" : "https://github.com/pterodactyl/panel"
  } ],
  "database_specific" : {
    "cwe_ids" : [ "CWE-79" ],
    "severity" : "LOW",
    "github_reviewed" : true,
    "github_reviewed_at" : "2025-12-30T15:13:52Z",
    "nvd_published_at" : null
  }
}