CVE intelligence and bounded remediation

CVE-2024-56517 — LGSL (Live Game Server List) provides online status lists for online video games

Medium CVSS 5.3

LGSL (Live Game Server List) provides online status lists for online video games. Versions up to and including 6.2.1 contain a reflected cross-site scripting vulnerability in the `Referer` HTTP header. The vulnerability allows attackers to inject arbitrary JavaScript code, which is reflected in the HTML response without proper sanitization. When crafted malicious input is provided in the `Referer` header, it is echoed back into an HTML attribute in the application’s response. Commit 7ecb839df9358d21f64cdbff5b2536af25a77de1 contains a patch for the issue.

Severity
Medium
CVSS
5.3 (4.0)
Published
2024-12-30
CISA KEV
Not currently listed
Ecosystem
javascript/npm
Weaknesses
CWE-79

Affected products

No browser-safe affected-product rows are available.

Matched remediation archetype

Cross-site scripting and unsafe browser output

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Check exposure

  • Trace reflected, stored, and DOM-derived untrusted values into HTML, attributes, URLs, styles, scripts, and client-side template sinks.
  • Identify affected origins, authenticated user roles, sensitive browser capabilities, and where content is shared across tenants.
  • Review framework escaping, rich-text sanitization, legacy templates, and client-side rendering paths.

Remediate safely

  • Use context-aware framework output encoding and safe DOM APIs; keep untrusted data out of executable contexts.
  • Sanitize intentionally supported markup with a maintained allowlist policy and validate URLs and attributes separately.
  • Update affected rendering components and add tests for every output context using inert sentinel markup.

Authoritative sources

Complete CVE record and remediation plan

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