CVE-2022-51013 — PocketMine-MP versions before 4

PocketMine-MP versions before 4.2.3 fail to validate damage metadata values in tool and armor item NBT data received from clients. Attackers can send negative or out-of-range damage values in itemstack NBT to trigger unhandled exceptions in the Durable class, causing server crash

01What is this vulnerability?

PocketMine-MP versions before 4.2.3 fail to validate damage metadata values in tool and armor item NBT data received from clients. Attackers can send negative or out-of-range damage values in itemstack NBT to trigger unhandled exceptions in the Durable class, causing server crashes.

02Affected products

No structured affected-product list available — see references below for vendor advisories.

03Active exploitation status

Not currently listed on the CISA Known Exploited Vulnerabilities (KEV) catalog. EPSS is the best forward-looking signal — see the EPSS row above.

04Recommended remediation

• Patch to a fixed version listed in the vendor advisory (see references below).
• Mitigate with WAF rules, network egress filters, or feature flags where the patch is not yet available.
• Hunt historical logs for exploitation indicators — see Detection signatures below.

05Technical details

For the full vendor write-up, exploit chains, and reference implementations, see the references list in section 09.

06Detection signatures

Ask SARA in chat to draft a starting detection for this CVE in your stack of choice.

07Related CVEs

No directly-cited follow-up CVEs in the KB record for this advisory. The references list in section 09 carries the vendor cross-references.

08Timeline

• Published: 2026-09-07T13:17:23.173
• Last modified: 2026-10-08T16:16:46.300

09References

• github.com — https://github.com/pmmp/PocketMine-MP/commit/c8e1cfcbee4945fd4b63d2a7e96025c5974…
• github.com — https://github.com/pmmp/PocketMine-MP/security/advisories/GHSA-46c5-pfj8-fv65
• www.vulncheck.com — https://www.vulncheck.com/advisories/pocketmine-mp-before-4.2.3-denial-of-servic…