{"id":"CVE-2022-51018","title":"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","summary":"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 consumpti…","severity":"medium","cvss":6.5,"cvssVector":"CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H","cwe":["CWE-400"],"vendor":"pmmp","product":"PocketMine-MP","affected":["PocketMine-MP >= 3.0.0 < 3.26.5","PocketMine-MP >= 4.0.0 < 4.0.5"],"published":"2026-09-07","updated":"2026-09-14","sourceUpdated":"2026-09-14T20:16:36.593","source":"NVD","sourceUrl":"https://nvd.nist.gov/vuln/detail/CVE-2022-51018","references":[{"url":"https://github.com/pmmp/PocketMine-MP/security/advisories/GHSA-p62j-hrxm-xcxf","label":"disclosure@vulncheck.com"},{"url":"https://www.vulncheck.com/advisories/pocketmine-mp-before-3.26.5-input-validation-via-book-pages","label":"disclosure@vulncheck.com"}],"tags":["nvd","cve.org"],"epss":0.00417,"epssPercentile":0.35569,"ssvc":{"exploitation":"none","automatable":"no","technicalImpact":"partial","timestamp":"2026-09-14T19:22:08.213076Z"},"ingestedAt":"2026-09-08T15:33:26.976Z","slug":"CVE-2022-51018","body":"## Overview\n\nPocketMine-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).\n\n## Remediation\n\nRefer to the linked advisories for vendor-supplied fixes and affected version ranges.","depth":"sunlit","depthScore":36,"depthScoreParts":{"impact":35.8,"likelihood":0.1,"exploitation":0,"ransomware":0},"changes":[]}