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GHSA-xx95-62h6-h7v3

lgsl Stored Cross-Site Scripting vulnerability

Also known asCVE-2024-56361
Published
Dec 26, 2024
Updated
Dec 27, 2024
Affected
1 pkg
Patched
1 / 1
Exploits
None indexed

EPSS Exploitation Probability

via FIRST.org ↗
0.4%probability of exploitation in next 30 days
Lower Risk34th percentile+0.14%
0.00%0.31%0.62%0.93%0.3%0.4%Dec 25Apr 26Jun 26

EPSS (Exploit Prediction Scoring System) is a daily probability model maintained by FIRST.org. It estimates the likelihood a CVE will be exploited in production environments within the next 30 days, derived from real-world threat intelligence signals.

Blast Radius

1 pkg affected
🐘tltneon/lgsl

Real-time download stats are indexed for npm and PyPI packages. This vulnerability affects Packagist packages — download data is not available via public APIs for these ecosystems.

Description

Summary

A stored cross-site scripting (XSS) vulnerability was identified in lgsl. The issue arises from improper sanitation of user input. Everyone who accesses this page will be affected by this attack.

Details

The function lgsl_query_40 in lgsl_protocol.php has implemented an HTTP crawler. This function makes a request to the registered game server, and upon crawling the malicious /info endpoint with our payload, will render our javascript on the info page. This information is being displayed via lgsl_details.php

Affected Code:

      foreach ($server['e'] as $field => $value) {
        $value = preg_replace('/((https*:\/\/|https*:\/\/www\.|www\.)[\w\d\.\-\/=$?​]*)/i', "<a href='$1' target='_blank'>$1</a>", html_entity_decode($value));
        $output .= "
        <tr><td> {$field} </td><td> {$value} </td></tr>";
      }

PoC

  1. Create a game server with type eco and set the target host and port accordingly to your ttack server. I have crafted this json payload that is being parsed according to the schema and being served on /info

  2. Serve the following JSON payload at /info on your handler

{
  "Animals": "1",
  "EconomyDesc": "<img src=x onerror=prompt(1)>"
}
  1. Access the corresponding server info page at /s?=. Upon refreshing & crawling our server, it should execute our javascript.

Affected Packages

1 total 1 fixed
EcosystemPackageVulnerable rangeFix
🐘Packagisttltneon/lgslall versions7.0.0

Detection & mitigation playbook

Open-source dependency
  1. Detect

    Scan your dependency tree (package-lock.json, pnpm-lock.yaml, requirements.txt, go.sum, etc.) for tltneon/lgsl. O3's reachability analysis confirms whether the vulnerable code path is actually invoked in your application, so you act on real exposure instead of every transitive match.

  2. Fix

    Update tltneon/lgsl to 7.0.0 or later, then make sure no transitive (indirect) dependency still pins the vulnerable range — O3 confirms GHSA-xx95-62h6-h7v3 is resolved across your whole dependency graph.

  3. Workarounds

    If you can't upgrade right away: gate or disable the affected feature, validate untrusted input at the boundary, and avoid passing attacker-controlled data into the vulnerable path. O3's runtime protection blocks exploitation in production as an interim safeguard until the upgrade lands.

  4. How O3 protects you

    O3 pinpoints whether GHSA-xx95-62h6-h7v3 is reachable in your code and exactly where to fix it, then blocks exploitation in production at runtime until the patched version is deployed.

Tailored to GHSA-xx95-62h6-h7v3. Runtime protection reduces exposure until a permanent patch is applied and verified — it complements patching, it doesn't replace it.

Frequently Asked Questions

### Summary A stored cross-site scripting (XSS) vulnerability was identified in lgsl. The issue arises from improper sanitation of user input. Everyone who accesses this page will be affected by this attack. ### Details The function `lgsl_query_40` in `lgsl_protocol.php` has implemented an HTTP crawler. This function makes a request to the registered game server, and upon crawling the malicious `/info` endpoint with our payload, will render our javascript on the info page. This information is being displayed via `lgsl_details.php` #### Affected Code: ```php foreach ($server['e'] as $
O3 Security · Impact-Aware SCA

Is GHSA-xx95-62h6-h7v3 in your dependencies?

O3 detects GHSA-xx95-62h6-h7v3 across Packagist dependencies and uses function-level reachability to confirm whether the vulnerable code path is actually reachable — not just present. No false positives.