CVE-2026-86199highCWE-184

PocketMine-MP before 5.43.1 Denial of Service via unauthenticated login

21Vexday Risk Score

No sign of exploitation. No public exploitation artifact known so far.

ssvc Trackcvss 8.7epss 0.3%

exploitation probability

0.3%top 76% of all CVEs

observed exploitation

nono source reports it

PocketMine-MP versions before 5.43.1 fail to properly validate the Certificate field during offline login authentication. Unauthenticated players can trigger an uninitialized property access error that crashes the server.

CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:N/VI:N/VA:H/SC:N/SI:N/SA:N

Affected products

pmmp · PocketMine-MP

References

https://github.com/pmmp/PocketMine-MP/commit/8c75a1d739e8e190d3cc2338b25cebcc9c052b1b https://github.com/pmmp/PocketMine-MP/commit/e4aaef4ee0f769b52dc0347a1d6da403b9691115 https://github.com/pmmp/PocketMine-MP/security/advisories/GHSA-g2fj-p69p-9chp https://www.vulncheck.com/advisories/pocketmine-mp-before-5.43.1-denial-of-service-via-unauthenticated-login