GHSA-g274-c6jj-h78p: Pocketmine/pocketmine mp Remote Code Execution Vulnerability

MODERATE
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CVSS 5.3
CWE-770
Published
Advisory Summary

GHSA-g274-c6jj-h78p is a MODERATE (CVSS 5.3) remote code execution vulnerability (CWE-770: Allocation of Resources Without Limits or Throttling) affecting Pocketmine/pocketmine mp libraries in the Packagist ecosystem. The issue involves pocketmine-mp allows malicious client data to waste server resources due to lack of limits for explode(). Remediation is available by upgrading affected packages to version 5.25.2.

GHSA-g274-c6jj-h78p at a Glance

CVE Identifier N/A
GHSA Identifier GHSA-g274-c6jj-h78p
Severity MODERATE
CVSS v3.1 Base Score 5.3
CWE Classification CWE-770: Allocation of Resources Without Limits or Throttling
Affected Product Pocketmine/pocketmine mp
Package Ecosystem Packagist
Published Date
Last Updated

Security Impact

CVSS: 5.3

The security impact metrics below are parsed directly from the CVSS v3.1 vector string (CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:L).

Attack Vector Network (AV:N)
Attack Complexity Low (AC:L)
Privileges Required None (PR:N)
User Interaction None (UI:N)
Scope Unchanged (S:U)
Confidentiality None (C:N)
Integrity None (I:N)
Availability Low (A:L)

How to Fix GHSA-g274-c6jj-h78p

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

pocketmine/pocketmine-mp fixed: 5.25.2 
Upgrade pocketmine/pocketmine-mp to 5.25.2
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 pocketmine/pocketmine-mp

How to Check if You Are Affected

To determine whether your application is affected by GHSA-g274-c6jj-h78p, inspect your project dependencies for Pocketmine/pocketmine mp:

inspect dependencies for pocketmine/pocketmine-mp

Analyze the terminal output to locate any version of Pocketmine/pocketmine mp in your dependency tree. If any resolved version matches the vulnerable ranges listed in the table below (for example, versions earlier than 5.25.2), 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-770: Allocation of Resources Without Limits or Throttling, where the product allocates a reusable resource or group of resources on behalf of an actor without imposing any intended restrictions on the size or number of resources that can be allocated. In Pocketmine/pocketmine mp, 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

### Impact Due to lack of limits by default in the [`explode()`](https://www.php.net/manual/en/function.explode.php) function, malicious clients were able to abuse some packets to waste server CPU and memory. This is similar to a previous security issue published in https://github.com/pmmp/PocketMine-MP/security/advisories/GHSA-gj94-v4p9-w672, but with a wider impact, including but not limited to: - Sign editing - LoginPacket JWT parsing - Command parsing However, the estimated impact of these issues is low, due to other limits such as the packet decompression limit. ### Patches The issue was fixed in 5.25.2 via d0d84d4c5195fb0a68ea7725424fda63b85cd831. A custom PHPStan rule has also been introduced to the project, which will henceforth require that all calls to `explode()` within the codebase must specify the `limit` parameter. ### Workarounds No simple way to fix this. Given that sign editing is the easiest way this could be exploited, workarounds could include plugins pre-processing `BlockActorDataPacket` to check that the incoming text doesn't have more than 4 parts when split by `\n`.

GHSA-g274-c6jj-h78p Affected Pocketmine/pocketmine mp Versions

1 component(s)
Fixed Versions:
5.25.2
Product / Package Ecosystem Affected Versions Fixed Version
pocketmine/pocketmine-mp
 Packagist
< 5.25.2
5.25.2

References

GitHub Advisory / Wiki ADVISORY
https://github.com/pmmp/PocketMine-MP/security/advisories/GHSA-g274-c6jj-h78p
GitHub Advisory / Wiki ADVISORY
https://github.com/pmmp/PocketMine-MP/security/advisories/GHSA-gj94-v4p9-w672
Security Fix Commit FIX COMMIT
https://github.com/pmmp/PocketMine-MP/commit/d0d84d4c5195fb0a68ea7725424fda63b85cd831
Pocketmine/pocketmine mp Source Repository REPOSITORY
https://github.com/pmmp/PocketMine-MP

Frequently Asked Questions

What is GHSA-g274-c6jj-h78p?
GHSA-g274-c6jj-h78p is a security vulnerability in Pocketmine/pocketmine mp involving PocketMine-MP allows malicious client data to waste server resources due to lack of limits for explode() under CWE-770: Allocation of Resources Without Limits or Throttling.
Which Pocketmine/pocketmine mp versions are affected?
Affected versions include releases prior to 5.25.2 across affected packages: pocketmine/pocketmine-mp.
What version fixes GHSA-g274-c6jj-h78p?
Upgrading to 5.25.2 (or the latest patched release for your respective branch) resolves the vulnerability.
Is pocketmine/pocketmine-mp affected?
Yes, pocketmine/pocketmine-mp is affected in releases prior to 5.25.2. Upgrade your dependency to 5.25.2 or later.
What is the CVSS score of GHSA-g274-c6jj-h78p?
GHSA-g274-c6jj-h78p has a CVSS v3.1 base score of 5.3 (MODERATE) with vector string CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:L.
What CWE is associated with GHSA-g274-c6jj-h78p?
GHSA-g274-c6jj-h78p is classified under CWE-770: Allocation of Resources Without Limits or Throttling (The product allocates a reusable resource or group of resources on behalf of an actor without imposing any intended restrictions on the size or number of resources that can be allocated.).
How can I check Packagist dependencies for GHSA-g274-c6jj-h78p?
Run the dependency tree command: 'inspect dependencies for pocketmine/pocketmine-mp'. 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-g274-c6jj-h78p",
  "modified" : "2025-03-10T20:29:26Z",
  "published" : "2025-03-10T20:29:26Z",
  "aliases" : [ ],
  "summary" : "PocketMine-MP allows malicious client data to waste server resources due to lack of limits for explode()",
  "details" : "### Impact\nDue to lack of limits by default in the [`explode()`](https://www.php.net/manual/en/function.explode.php) function, malicious clients were able to abuse some packets to waste server CPU and memory.\n\nThis is similar to a previous security issue published in https://github.com/pmmp/PocketMine-MP/security/advisories/GHSA-gj94-v4p9-w672, but with a wider impact, including but not limited to:\n\n- Sign editing\n- LoginPacket JWT parsing\n- Command parsing\n\nHowever, the estimated impact of these issues is low, due to other limits such as the packet decompression limit.\n\n### Patches\nThe issue was fixed in 5.25.2 via d0d84d4c5195fb0a68ea7725424fda63b85cd831.\n\nA custom PHPStan rule has also been introduced to the project, which will henceforth require that all calls to `explode()` within the codebase must specify the `limit` parameter.\n\n### Workarounds\nNo simple way to fix this.\nGiven that sign editing is the easiest way this could be exploited, workarounds could include plugins pre-processing `BlockActorDataPacket` to check that the incoming text doesn't have more than 4 parts when split by `\\n`.",
  "severity" : [ {
    "type" : "CVSS_V3",
    "score" : "CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:L"
  } ],
  "affected" : [ {
    "package" : {
      "ecosystem" : "Packagist",
      "name" : "pocketmine/pocketmine-mp"
    },
    "ranges" : [ {
      "type" : "ECOSYSTEM",
      "events" : [ {
        "introduced" : "0"
      }, {
        "fixed" : "5.25.2"
      } ]
    } ]
  } ],
  "references" : [ {
    "type" : "WEB",
    "url" : "https://github.com/pmmp/PocketMine-MP/security/advisories/GHSA-g274-c6jj-h78p"
  }, {
    "type" : "WEB",
    "url" : "https://github.com/pmmp/PocketMine-MP/security/advisories/GHSA-gj94-v4p9-w672"
  }, {
    "type" : "WEB",
    "url" : "https://github.com/pmmp/PocketMine-MP/commit/d0d84d4c5195fb0a68ea7725424fda63b85cd831"
  }, {
    "type" : "PACKAGE",
    "url" : "https://github.com/pmmp/PocketMine-MP"
  } ],
  "database_specific" : {
    "cwe_ids" : [ "CWE-770" ],
    "severity" : "MODERATE",
    "github_reviewed" : true,
    "github_reviewed_at" : "2025-03-10T20:29:26Z",
    "nvd_published_at" : null
  }
}