CVE-2021-48006 (GCVE-0-2021-48006)
Vulnerability from cvelistv5 – Published: 2026-09-06 12:00 – Updated: 2026-09-06 12:50 Unsupported When Assigned
VLAI
EPSS
VEX
Title
PocketMine-MP before 4.0.3 Operator Privilege Escalation via Case Sensitivity
Summary
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.
Severity
CWE
- CWE-178 - Improper Handling of Case Sensitivity
Assigner
References
3 references
| URL | Tags |
|---|---|
| https://github.com/pmmp/PocketMine-MP/security/ad… | vendor-advisory |
| https://github.com/pmmp/PocketMine-MP/commit/4d37… | patch |
| https://www.vulncheck.com/advisories/pocketmine-m… | third-party-advisory |
Impacted products
1 product
| Vendor | Product | Version | CPE status | |
|---|---|---|---|---|
| pmmp | PocketMine-MP |
Affected:
0 , < 4.0.3
(semver)
Unaffected: 4.0.3 (semver) |
guessed |
Date Public
2021-12-16 00:00
{
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},
{
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}
]
}
],
"datePublic": "2021-12-16T00:00:00.000Z",
"descriptions": [
{
"lang": "en",
"value": "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."
}
],
"metrics": [
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"attackVector": "LOCAL",
"baseScore": 4.8,
"baseSeverity": "MEDIUM",
"privilegesRequired": "LOW",
"subAvailabilityImpact": "NONE",
"subConfidentialityImpact": "NONE",
"subIntegrityImpact": "NONE",
"userInteraction": "NONE",
"vectorString": "CVSS:4.0/AV:L/AC:L/AT:N/PR:L/UI:N/VC:L/VI:N/VA:N/SC:N/SI:N/SA:N",
"version": "4.0",
"vulnAvailabilityImpact": "NONE",
"vulnConfidentialityImpact": "LOW",
"vulnIntegrityImpact": "NONE"
},
"format": "CVSS"
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{
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"confidentialityImpact": "LOW",
"integrityImpact": "NONE",
"privilegesRequired": "LOW",
"scope": "UNCHANGED",
"userInteraction": "NONE",
"vectorString": "CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:L/I:N/A:N",
"version": "3.1"
},
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}
],
"problemTypes": [
{
"descriptions": [
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"cweId": "CWE-178",
"description": "Improper Handling of Case Sensitivity",
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"type": "CWE"
}
]
}
],
"providerMetadata": {
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"shortName": "VulnCheck"
},
"references": [
{
"name": "GitHub Security Advisory (GHSA-j5qg-w9jg-3wg3)",
"tags": [
"vendor-advisory"
],
"url": "https://github.com/pmmp/PocketMine-MP/security/advisories/GHSA-j5qg-w9jg-3wg3"
},
{
"name": "Patch Commit",
"tags": [
"patch"
],
"url": "https://github.com/pmmp/PocketMine-MP/commit/4d37b79ff7f9d9452e988387f97919a9a1c4954e"
},
{
"name": "VulnCheck Advisory: PocketMine-MP before 4.0.3 Operator Privilege Escalation via Case Sensitivity",
"tags": [
"third-party-advisory"
],
"url": "https://www.vulncheck.com/advisories/pocketmine-mp-before-4.0.3-operator-privilege-escalation-via-case-sensitivity"
}
],
"tags": [
"unsupported-when-assigned"
],
"title": "PocketMine-MP before 4.0.3 Operator Privilege Escalation via Case Sensitivity",
"x_generator": {
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}
},
"cveMetadata": {
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"cveId": "CVE-2021-48006",
"datePublished": "2026-09-06T12:00:22.800Z",
"dateReserved": "2026-09-05T21:04:30.475Z",
"dateUpdated": "2026-09-06T12:50:16.053Z",
"state": "PUBLISHED"
},
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"dataVersion": "5.2",
"vulnerability-lookup:meta": {
"epss": {
"cve": "CVE-2021-48006",
"date": "2026-09-07",
"epss": "0.00109",
"percentile": "0.0135"
},
"nvd": "{\"cve\":{\"id\":\"CVE-2021-48006\",\"sourceIdentifier\":\"disclosure@vulncheck.com\",\"published\":\"2026-09-06T12:17:14.637\",\"lastModified\":\"2026-09-06T13:17:09.963\",\"vulnStatus\":\"Received\",\"cveTags\":[{\"sourceIdentifier\":\"disclosure@vulncheck.com\",\"tags\":[\"unsupported-when-assigned\"]}],\"descriptions\":[{\"lang\":\"en\",\"value\":\"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.\"}],\"affected\":[{\"source\":\"disclosure@vulncheck.com\",\"affectedData\":[{\"vendor\":\"pmmp\",\"product\":\"PocketMine-MP\",\"defaultStatus\":\"unaffected\",\"versions\":[{\"version\":\"0\",\"lessThan\":\"4.0.3\",\"versionType\":\"semver\",\"status\":\"affected\"},{\"version\":\"4.0.3\",\"versionType\":\"semver\",\"status\":\"unaffected\"}]}]}],\"metrics\":{\"cvssMetricV40\":[{\"source\":\"disclosure@vulncheck.com\",\"type\":\"Secondary\",\"cvssData\":{\"version\":\"4.0\",\"vectorString\":\"CVSS:4.0/AV:L/AC:L/AT:N/PR:L/UI:N/VC:L/VI:N/VA:N/SC:N/SI:N/SA:N/E:X/CR:X/IR:X/AR:X/MAV:X/MAC:X/MAT:X/MPR:X/MUI:X/MVC:X/MVI:X/MVA:X/MSC:X/MSI:X/MSA:X/S:X/AU:X/R:X/V:X/RE:X/U:X\",\"baseScore\":4.8,\"baseSeverity\":\"MEDIUM\",\"attackVector\":\"LOCAL\",\"attackComplexity\":\"LOW\",\"attackRequirements\":\"NONE\",\"privilegesRequired\":\"LOW\",\"userInteraction\":\"NONE\",\"vulnConfidentialityImpact\":\"LOW\",\"vulnIntegrityImpact\":\"NONE\",\"vulnAvailabilityImpact\":\"NONE\",\"subConfidentialityImpact\":\"NONE\",\"subIntegrityImpact\":\"NONE\",\"subAvailabilityImpact\":\"NONE\",\"exploitMaturity\":\"NOT_DEFINED\",\"confidentialityRequirement\":\"NOT_DEFINED\",\"integrityRequirement\":\"NOT_DEFINED\",\"availabilityRequirement\":\"NOT_DEFINED\",\"modifiedAttackVector\":\"NOT_DEFINED\",\"modifiedAttackComplexity\":\"NOT_DEFINED\",\"modifiedAttackRequirements\":\"NOT_DEFINED\",\"modifiedPrivilegesRequired\":\"NOT_DEFINED\",\"modifiedUserInteraction\":\"NOT_DEFINED\",\"modifiedVulnConfidentialityImpact\":\"NOT_DEFINED\",\"modifiedVulnIntegrityImpact\":\"NOT_DEFINED\",\"modifiedVulnAvailabilityImpact\":\"NOT_DEFINED\",\"modifiedSubConfidentialityImpact\":\"NOT_DEFINED\",\"modifiedSubIntegrityImpact\":\"NOT_DEFINED\",\"modifiedSubAvailabilityImpact\":\"NOT_DEFINED\",\"Safety\":\"NOT_DEFINED\",\"Automatable\":\"NOT_DEFINED\",\"Recovery\":\"NOT_DEFINED\",\"valueDensity\":\"NOT_DEFINED\",\"vulnerabilityResponseEffort\":\"NOT_DEFINED\",\"providerUrgency\":\"NOT_DEFINED\"}}],\"cvssMetricV31\":[{\"source\":\"disclosure@vulncheck.com\",\"type\":\"Secondary\",\"cvssData\":{\"version\":\"3.1\",\"vectorString\":\"CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:L/I:N/A:N\",\"baseScore\":3.3,\"baseSeverity\":\"LOW\",\"attackVector\":\"LOCAL\",\"attackComplexity\":\"LOW\",\"privilegesRequired\":\"LOW\",\"userInteraction\":\"NONE\",\"scope\":\"UNCHANGED\",\"confidentialityImpact\":\"LOW\",\"integrityImpact\":\"NONE\",\"availabilityImpact\":\"NONE\"},\"exploitabilityScore\":1.8,\"impactScore\":1.4}]},\"weaknesses\":[{\"source\":\"disclosure@vulncheck.com\",\"type\":\"Secondary\",\"description\":[{\"lang\":\"en\",\"value\":\"CWE-178\"}]}],\"references\":[{\"url\":\"https://github.com/pmmp/PocketMine-MP/commit/4d37b79ff7f9d9452e988387f97919a9a1c4954e\",\"source\":\"disclosure@vulncheck.com\"},{\"url\":\"https://github.com/pmmp/PocketMine-MP/security/advisories/GHSA-j5qg-w9jg-3wg3\",\"source\":\"disclosure@vulncheck.com\"},{\"url\":\"https://www.vulncheck.com/advisories/pocketmine-mp-before-4.0.3-operator-privilege-escalation-via-case-sensitivity\",\"source\":\"disclosure@vulncheck.com\"}]}}"
}
}
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Experimental. This forecast is provided for visualization only and may change without notice. Do not use it for operational decisions.
Forecast uses a logistic model when the trend is rising, or an exponential decay model when the trend is falling. Fitted via linearized least squares.
Sightings
| Author | Source | Type | Date | Other |
|---|
Nomenclature
- Seen: The vulnerability was mentioned, discussed, or observed by the user.
- Confirmed: The vulnerability has been validated from an analyst's perspective.
- Published Proof of Concept: A public proof of concept is available for this vulnerability.
- Exploited: The vulnerability was observed as exploited by the user who reported the sighting.
- Patched: The vulnerability was observed as successfully patched by the user who reported the sighting.
- Not exploited: The vulnerability was not observed as exploited by the user who reported the sighting.
- Not confirmed: The user expressed doubt about the validity of the vulnerability.
- Not patched: The vulnerability was not observed as successfully patched by the user who reported the sighting.
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The MITRE ATT&CK techniques below are AI-generated suggestions, inferred from the description of the
vulnerability by the CIRCL/vulnerability-attack-technique-classification-roberta-base
model, served locally by ML-Gateway.
They have not been verified by an analyst and are provided for guidance only.
The approach is described in our paper Mapping CVEs to MITRE ATT&CK Techniques: A Curated Gold-Set Classifier and the Limits of LLM-Assisted Label Expansion.
The approach is described in our paper Mapping CVEs to MITRE ATT&CK Techniques: A Curated Gold-Set Classifier and the Limits of LLM-Assisted Label Expansion.
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