GHSA-wqqv-jcfr-9f5g: Pocketmine/pocketmine mp PocketMine-MP Has Improperly Handled Dye Vulnerability

HIGH
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CVSS 7.5
Published
Advisory Summary

GHSA-wqqv-jcfr-9f5g is a HIGH (CVSS 7.5) pocketmine-mp has improperly handled dye vulnerability (General Security Weakness) affecting Pocketmine/pocketmine mp libraries in the Packagist ecosystem. The issue involves pocketmine-mp has improperly handled dye colour ids in banner nbt, leading to server crash. Remediation is available by upgrading affected packages to version 4.8.1.

GHSA-wqqv-jcfr-9f5g at a Glance

CVE Identifier N/A
GHSA Identifier GHSA-wqqv-jcfr-9f5g
Severity HIGH
CVSS v3.1 Base Score 7.5
CWE Classification General Security Weakness
Affected Product Pocketmine/pocketmine mp
Package Ecosystem Packagist
Published Date
Last Updated

Security Impact

CVSS: 7.5

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:H).

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 High (A:H)

How to Fix GHSA-wqqv-jcfr-9f5g

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: 4.8.1 
Upgrade pocketmine/pocketmine-mp to 4.8.1
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-wqqv-jcfr-9f5g, 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 4.8.1), 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 General Security Weakness. 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 `DyeColorIdMap->fromId()` did not account for the possibility that it might be given invalid input. This means that an undefined offset error would occur whenever this happened. This code is indirectly called during [`Banner->deserializeCompoundTag()`](https://github.com/pmmp/PocketMine-MP/blob/38d6284671e8b657ba557e765a6c29b24a7705f5/src/item/Banner.php#L104), which is invoked when deserializing any item NBT, whether from network or disk. An attacker could use this bug to crash a server by providing NBT with invalid values for pattern colours in an inventory transaction, or by using `/give` to obtain an item with NBT like this. ### Patches 08b9495bce2d65a6d1d3eeb76e484499a00765eb ### Workarounds This is quite difficult to work around via a plugin. Theoretically, it's possible to override the `Banner` item class from a plugin and validate the data before it reaches `deserializeCompoundTag()`. ### For more information If you have any questions or comments about this advisory: * Email us at [security@pmmp.io](mailto:security@pmmp.io)

GHSA-wqqv-jcfr-9f5g Affected Pocketmine/pocketmine mp Versions

1 component(s)
Fixed Versions:
4.8.1
Product / Package Ecosystem Affected Versions Fixed Version
pocketmine/pocketmine-mp
 Packagist
< 4.8.1
4.8.1

References

GitHub Advisory / Wiki ADVISORY
https://github.com/pmmp/PocketMine-MP/security/advisories/GHSA-wqqv-jcfr-9f5g
Security Fix Commit FIX COMMIT
https://github.com/pmmp/PocketMine-MP/commit/08b9495bce2d65a6d1d3eeb76e484499a00765eb
Pocketmine/pocketmine mp Source Repository REPOSITORY
https://github.com/pmmp/PocketMine-MP
Pocketmine/pocketmine mp Source Repository REPOSITORY
https://github.com/pmmp/PocketMine-MP/blob/38d6284671e8b657ba557e765a6c29b24a7705f5/src/item/Banner.php#L104

Frequently Asked Questions

What is GHSA-wqqv-jcfr-9f5g?
GHSA-wqqv-jcfr-9f5g is a security vulnerability in Pocketmine/pocketmine mp involving PocketMine-MP has improperly handled dye colour IDs in banner NBT, leading to server crash under General Security Weakness.
Which Pocketmine/pocketmine mp versions are affected?
Affected versions include releases prior to 4.8.1 across affected packages: pocketmine/pocketmine-mp.
What version fixes GHSA-wqqv-jcfr-9f5g?
Upgrading to 4.8.1 (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 4.8.1. Upgrade your dependency to 4.8.1 or later.
What is the CVSS score of GHSA-wqqv-jcfr-9f5g?
GHSA-wqqv-jcfr-9f5g has a CVSS v3.1 base score of 7.5 (HIGH) with vector string CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H.
What CWE is associated with GHSA-wqqv-jcfr-9f5g?
GHSA-wqqv-jcfr-9f5g is classified under General Security Weakness.
How can I check Packagist dependencies for GHSA-wqqv-jcfr-9f5g?
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-wqqv-jcfr-9f5g",
  "modified" : "2025-12-26T17:28:42Z",
  "published" : "2023-01-09T20:07:27Z",
  "aliases" : [ ],
  "summary" : "PocketMine-MP has improperly handled dye colour IDs in banner NBT, leading to server crash",
  "details" : "### Impact\n`DyeColorIdMap->fromId()` did not account for the possibility that it might be given invalid input. This means that an undefined offset error would occur whenever this happened.\n\nThis code is indirectly called during [`Banner->deserializeCompoundTag()`](https://github.com/pmmp/PocketMine-MP/blob/38d6284671e8b657ba557e765a6c29b24a7705f5/src/item/Banner.php#L104), which is invoked when deserializing any item NBT, whether from network or disk.\n\nAn attacker could use this bug to crash a server by providing NBT with invalid values for pattern colours in an inventory transaction, or by using `/give` to obtain an item with NBT like this.\n\n### Patches\n08b9495bce2d65a6d1d3eeb76e484499a00765eb\n\n### Workarounds\nThis is quite difficult to work around via a plugin. Theoretically, it's possible to override the `Banner` item class from a plugin and validate the data before it reaches `deserializeCompoundTag()`.\n\n### For more information\nIf you have any questions or comments about this advisory:\n* Email us at [security@pmmp.io](mailto:security@pmmp.io)",
  "severity" : [ {
    "type" : "CVSS_V3",
    "score" : "CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H"
  } ],
  "affected" : [ {
    "package" : {
      "ecosystem" : "Packagist",
      "name" : "pocketmine/pocketmine-mp"
    },
    "ranges" : [ {
      "type" : "ECOSYSTEM",
      "events" : [ {
        "introduced" : "0"
      }, {
        "fixed" : "4.8.1"
      } ]
    } ]
  } ],
  "references" : [ {
    "type" : "WEB",
    "url" : "https://github.com/pmmp/PocketMine-MP/security/advisories/GHSA-wqqv-jcfr-9f5g"
  }, {
    "type" : "WEB",
    "url" : "https://github.com/pmmp/PocketMine-MP/commit/08b9495bce2d65a6d1d3eeb76e484499a00765eb"
  }, {
    "type" : "PACKAGE",
    "url" : "https://github.com/pmmp/PocketMine-MP"
  }, {
    "type" : "WEB",
    "url" : "https://github.com/pmmp/PocketMine-MP/blob/38d6284671e8b657ba557e765a6c29b24a7705f5/src/item/Banner.php#L104"
  } ],
  "database_specific" : {
    "cwe_ids" : [ ],
    "severity" : "HIGH",
    "github_reviewed" : true,
    "github_reviewed_at" : "2023-01-09T20:07:27Z",
    "nvd_published_at" : null
  }
}