CVE-2026-86199: high-severity vulnerability in pmmp PocketMine-MP
PocketMine-MP before 5.43.1 Denial of Service via unauthenticated login
Published
E-mail alert when it lands in KEV, gets a public PoC or its score goes up.
21Vexday Risk Score
No sign of exploitation. No public exploitation artifact known so far.
ssvc Trackcvss 8.7epss 0.5%
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-MPRelated CVEs — pmmp PocketMine-MP
In the same product, most dangerous first.
CVE-2024-58381HIGHPocketMine-MP before 5.11.1 Denial of Service via LoginPacketEPSS 0.8%CVE-2022-51015HIGHPocketMine-MP before 4.0.6 Denial of Service via PlayerActionPacketEPSS 0.7%CVE-2026-86200MEDIUMPocketMine-MP before 5.42.1 LogDoS via LoginPacket clientData JWTEPSS 0.6%CVE-2023-54393HIGHPocketMine-MP before 4.20.5 Denial of Service via LoginPacketEPSS 0.6%CVE-2022-51017HIGHPocketMine-MP before 3.26.5 and 4.0.5 Denial of Service via Skin DataEPSS 0.6%CVE-2026-86201HIGHPocketMine-MP before 5.41.1 LogDoS via LoginPacket clientDataEPSS 0.6%
References
https://github.com/pmmp/PocketMine-MP/commit/8c75a1d739e8e190d3cc2338b25cebcc9c052b1bhttps://github.com/pmmp/PocketMine-MP/commit/e4aaef4ee0f769b52dc0347a1d6da403b9691115https://github.com/pmmp/PocketMine-MP/security/advisories/GHSA-g2fj-p69p-9chphttps://www.vulncheck.com/advisories/pocketmine-mp-before-5.43.1-denial-of-service-via-unauthenticated-login