Resource exhaustion in Pmmp Pocketmine-Mp
CVE-2022-51018
PocketMine-MP before 3.26.5 and 4.0.x before 4.0.5 does not limit book page text length, page count, or author/title length. A player who obtains a writable book can create oversized NBT ('book bombs'), causing excess bandwidth consumption and server crashes (exceeding the 1 MB chunk size limit when saving region-based worlds in PM3, or exceeding the 32 KiB TAG_String limit in PM4).
Vulnerability class: DoS (Denial of Service)
Published · last modified .
CVSS v3 metric
CVSS v3 base score 6.5 (Medium). Vector: CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H.
EPSS exploit prediction
EPSS: 0.004 (34.9th percentile), scored .
Very low probability of exploitation in the next 30 days; routine patching cadence is appropriate. 35th percentile — 34.9% of CVEs in the catalogue have a lower EPSS than this one. How to read EPSS.
EPSS over last 30 days · oldest: 0.004 · newest: 0.004 · change: 0.000
Affected products
Weakness classification (CWE)
References
- github.com/pmmp/PocketMine-MP/security/advisories/GHSA-p62j-hrxm-xcxf (vendor-advisory)
- www.vulncheck.com/advisories/pocketmine-mp-before-3.26.5-input-validation-via-b… (third-party-advisory)
Frequently asked questions
- What is CVE-2022-51018?
- CVE-2022-51018 is a medium-severity vulnerability in Pmmp Pocketmine-Mp, classified under Uncontrolled Resource Consumption. CVSS score: 6.5/10. Published 2026-09-07.
- How severe is CVE-2022-51018?
- Medium severity. CVSS v3 base score is 6.5 out of 10.