HIGH
PocketMine-MP before 5.41.1 LogDoS via LoginPacket clientData
Published Sep 9, 2026
8.7
HIGHCVSS 4.0
EPSS 0.61%
Description
PocketMine-MP before 5.41.1 contains a denial of service vulnerability in LoginPacket processing where large or complex structures in unknown clientData JWT properties cause excessive logging without sanitization. Attackers can send crafted LoginPackets with deeply nested or massive object structures to trigger out-of-memory conditions and crash the server.
Affected products
-
- Version 0StatusaffectedConstraints<5.41.1
- Version 5.41.1StatusunaffectedConstraints-
- Version
Default status is the baseline for the product, each version can override it (e.g. patched versions marked unaffected).
| Vendor | Product | Default status | Versions | |||||||||
|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Pmmp | PocketMine-MP | unaffected |
|
No data.
No data.
No Red Hat product state for this CVE.
No package ranges for this CVE.
Remediation
No remediation recorded yet.
Weaknesses (1)
References (3)
- https://github.com/pmmp/PocketMine-MP/commit/87d1c0cea09d972fd4c2fafb84dac2ecab7649f0 patch
- https://github.com/pmmp/PocketMine-MP/security/advisories/GHSA-h6rj-3m53-887h exploitvendor-advisory
- https://www.vulncheck.com/advisories/pocketmine-mp-before-5.41.1-logdos-via-loginpacket-clientdata third-party-advisory
| Link | Providers | Tags |
|---|---|---|
| https://github.com/pmmp/PocketMine-MP/commit/87d1c0cea09d972fd4c2fafb84dac2ecab7649f0 | patch | |
| https://github.com/pmmp/PocketMine-MP/security/advisories/GHSA-h6rj-3m53-887h | exploitvendor-advisory | |
| https://www.vulncheck.com/advisories/pocketmine-mp-before-5.41.1-logdos-via-loginpacket-clientdata | third-party-advisory |
Change history (0)
No recorded changes yet.
Sources
CVE.org / MITRE
Status PUBLISHED
Assigner VulnCheck
Published Sep 9, 2026
Updated Sep 14, 2026
Reserved Sep 5, 2026
Link CVE-2026-86201
CISA Vulnrichment
Updated Sep 14, 2026