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lgsl Stored Cross-Site Scripting vulnerabilityGHSA-xx95-62h6-h7v3

Fix: tltneon/lgsl@3fbd3bb

GHSA-xx95-62h6-h7v3 is a Cross-site Scripting (XSS) vulnerability in tltneon/lgsl. A fix is available for tltneon/lgsl — see the affected versions and patch details below.

Also known asCVE-2024-56361
Published
Updated
Affected
1 pkg
Patched
1 / 1
Exploits
None indexed
Exploitation data as of Nov 11, 2026 · OSV.dev, NVD, FIRST.org (EPSS)

Exploitation Status

Proof-of-concept exploit code exists

  • CISA’s SSVC triage found public proof-of-concept exploit code for this CVE, though no confirmed active exploitation.
  • CISA assesses this as automatable — exploitation doesn’t require manual, per-target effort, which raises the odds of mass scanning and opportunistic attacks.

Exploitation and automatability from CISA’s SSVC triage for GHSA-xx95-62h6-h7v3.

EPSS Exploitation Probability

via FIRST.org ↗
0.5%probability of exploitation in next 30 days
Lower Risk0.00%
Lower risk than most CVEs41th percentile — riskier than 41% of all scored CVEsHighest risk
0.00%0.32%0.64%0.96%0.2%0.5%May 26Sep 26Nov 26

Probability of exploitation in the next 30 days, from FIRST.org EPSS.

Real-World Exposure

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 versions7.0.0composer require tltneon/lgsl:^7.0.0

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, including transitive dependencies — a direct dependency you never call can still pull in a vulnerable version.

  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

    Escape or sanitise the affected output on the server side rather than relying on client-side filtering, and add a Content-Security-Policy that blocks inline script execution so injected markup cannot run even if it reaches the page.

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

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lgsl Stored Cross-Site Scripting vulnerability