Low severity · published Sep 6, 2026
CVE-2021-48006
PocketMine-MP before 4.0.3 Operator Privilege Escalation via Case Sensitivity
3.3
CVSS
0.2%
EPSS
No
On KEV
Description
PocketMine-MP before 4.0.3 does not perform case-insensitive matching when removing operator entries from ops.txt. The removeOp function lowercases the supplied name but only removes an exactly matching entry, so an operator name stored with non-lowercase letters cannot be revoked using the deop command, leaving the player as an operator until the entry is removed from ops.txt manually.
CVSS vector
CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:L/I:N/A:N
Attack vector
Local
Complexity
Low
Privileges
Low
User interaction
None
Confidentiality
Low
Integrity
None
Availability
None
Scope
Unchanged
Exploitation
Is it being used?
Exploit prediction (EPSS)0.2% · higher than 5% of CVEs
Exploited in the wildNo evidence yet
CISA KEVNot listed
Ransomware campaign useNot known
Affected products
Which versions
PO
PocketMine-MP · pmmp
before 4.0.3 · source: vendor
References
NVD
https://nvd.nist.gov/vuln/detail/CVE-2021-48006
CVE.org
https://www.cve.org/CVERecord?id=CVE-2021-48006
vendor-advisory
https://github.com/pmmp/PocketMine-MP/security/advisories/GHSA-j5qg-w9jg-3wg3
patch
https://github.com/pmmp/PocketMine-MP/commit/4d37b79ff7f9d9452e988387f97919a9a1c4954e
third-party-advisory
https://www.vulncheck.com/advisories/pocketmine-mp-before-4.0.3-operator-privilege-escalation-via-case-sensitivity
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