Vulnerability · Published Sep 9, 2026 · Assigned by VulnCheck
CVE-2023-54396PocketMine-MP before 4.8.1 Server Crash via Banner NBT
Medium 6.5
In plain English
A medium-severity security flaw in PocketMine-MP from pmmp. There are no confirmed reports of exploitation so far. The chance it is exploited in the next 30 days is estimated at 0.5% (higher than 45% of all known vulnerabilities). Fixed versions are available - upgrade the affected package.
Severity (CVSS 3.1)6.5Medium
Exploit odds (30 days)0.5%top 55.0% of all CVEs
Exploited in the wildNo reportsCISA SSVC: none
Attack toolingNoneno public tooling known
Official description
PocketMine-MP versions before 4.8.1 fail to validate dye color IDs in banner NBT data during deserialization. Attackers can provide invalid color values in inventory transactions or via commands to trigger undefined offset errors and crash the server.
Affected packages & fixed versions
| Ecosystem | Package | Fixed in | Advisory |
|---|---|---|---|
| Packagist | pocketmine/pocketmine-mp | 4.8.1 | GHSA-wqqv-jcfr-9f5g |
Affected products (as reported)
| Vendor | Product | Versions |
|---|---|---|
| pmmp | PocketMine-MP | 0 – before 4.8.1 |
Weakness: CWE-129 · Vector: CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H
References
- GitHub Security Advisory (GHSA-wqqv-jcfr-9f5g) vendor-advisory
- Patch Commit patch
- VulnCheck Advisory: PocketMine-MP before 4.8.1 Server Crash via Banner NBT third-party-advisory