Vulnerability · Published Sep 9, 2026 · Assigned by VulnCheck

CVE-2023-54395PocketMine-MP before 4.12.5 Denial of Service via ModalFormResponsePacket

Medium 4.3

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 39% of all known vulnerabilities). Fixed versions are available - upgrade the affected package.

Severity (CVSS 3.1)4.3Medium

Exploit odds (30 days)0.5%top 60.7% of all CVEs

Exploited in the wildNo reportsCISA SSVC: none

Attack toolingNoneno public tooling known

Official description

PocketMine-MP versions before 4.12.5 contain a denial-of-service vulnerability in ModalFormResponsePacket processing that allows attackers to cause server resource exhaustion by sending large JSON payloads. Attackers can send numerous oversized modal form response packets to consume CPU time and prevent the server from processing legitimate connections.

Affected packages & fixed versions

Ecosystem	Package	Fixed in	Advisory
Packagist	pocketmine/pocketmine-mp	4.12.5	GHSA-7m9r-rq9j-wmmh

Affected products (as reported)

Vendor	Product	Versions
pmmp	PocketMine-MP	0 – before 4.12.5

Weakness: CWE-407 · Vector: CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:L

References

GitHub Security Advisory (GHSA-7m9r-rq9j-wmmh) vendor-advisory
Patch Commit patch
VulnCheck Advisory: PocketMine-MP before 4.12.5 Denial of Service via ModalFormResponsePacket third-party-advisory