CVE-2026-86202 (CVSS 4.3)

Description

PocketMine-MP versions before 5.39.2 contain a network amplification vulnerability in ActorEventPacket handling that allows clients to trigger consuming animations for all visible players. Attackers can send crafted ActorEventPacket messages to spam animation events to other clients and waste server CPU and memory resources.

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CVSS v3.1 Score

4.3

MEDIUM

CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:L/A:N

EPSS — Exploit Prediction

0.0026

Probability of exploitation

0.18%

Percentile rank

EPSS estimates the probability that this vulnerability will be exploited in the wild within the next 30 days. A higher score means more likely to be exploited.

Weakness Type (CWE)

CWE-406 CWE-406

References

Other References

https://github.com/pmmp/PocketMine-MP/commit/aeea1150a772a005b92bd418366f1b7cf1a91ab5 https://github.com/pmmp/PocketMine-MP/security/advisories/GHSA-7hmv-4j2j-pp6f https://www.vulncheck.com/advisories/pocketmine-mp-before-5.39.2-network-amplification-via-actoreventpacket

Frequently Asked Questions

What is CVE-2026-86202? +

PocketMine-MP versions before 5.39.2 contain a network amplification vulnerability in ActorEventPacket handling that allows clients to trigger consuming animations for all visible players. Attackers can send crafted ActorEventPacket messages to spam animation events to other clients and waste server CPU and memory resources. It has a CVSS v3.1 base score of 4.3 (MEDIUM).

How severe is CVE-2026-86202? +

CVE-2026-86202 has a CVSS v3.1 score of 4.3 out of 10, rated MEDIUM. This is a medium-severity vulnerability that should be remediated as part of regular maintenance. The EPSS score is 0.0026, placing it in the 0th percentile for exploitation probability.

How do I check if I'm vulnerable to CVE-2026-86202? +

You can use Secably's free Website Scanner to check your website for known vulnerabilities. For infrastructure scanning, use the Port Scanner to identify exposed services that may be affected. Check the vendor advisories linked above for specific patch and version information.

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CVE-2026-86202