CVE-2022-51013
PocketMine-MP before 4.2.3 Denial of Service via NBT Metadata
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.
Attack profile
How easy it is to exploit
- Attack vector
- Network
- Complexity
- Low
- Privileges needed
- Low
- User interaction
- None
What an attacker can affect
- Confidentiality
- None
- Integrity
- None
- Availability
- High
Exploit likelihood
What each source reports
CVE List Score used
PocketMine-MP before 4.2.3 Denial of Service via NBT Metadata
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.
- Record
CVE-2022-51013- CVSS 4.0
- 7.1 High
CVSS:4.0/AV:N/AC:L/AT:N/PR:L/UI:N/VC:N/VI:N/VA:H/SC:N/SI:N/SA:N - CVSS 3.1
- 6.5 Medium
CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H - Weakness
- CWE-20
- Updated
- 2026-11-02
EUVDEUVD-2022-56042
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.
- Record
EUVD-2022-56042- CVSS 4.0
- 7.1 High
CVSS:4.0/AV:N/AC:L/AT:N/PR:L/UI:N/VC:N/VI:N/VA:H/SC:N/SI:N/SA:N - Updated
- 2026-11-02
GitHub AdvisoriesGHSA-46c5-pfj8-fv65
Improperly checked metadata on tools/armour itemstacks received from the client
Impact
Due to a workaround applied in 1.13, an attacker may send a negative damage/meta value in a tool or armour item's NBT, which TypeConverter then blindly uses as if it was valid without being checked.
When this invalid metadata value reaches Durable->setDamage(), an exception is thrown because the metadata is not within the expected range for damage values.
This can be reproduced with either a too-large damage value, or a negative one.
Patches
c8e1cfcbee4945fd4b63d2a7e96025c59744d4f1
Workarounds
In theory this can be checked by plugins using a custom TypeConverter, but this is likely to be very cumbersome.
For more information
- Email us at [email protected]
- Record
GHSA-46c5-pfj8-fv65- CVSS 3.1
- 7.5 High
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H - Weakness
- CWE-704
- Updated
- 2026-11-02
GitHub AdvisoriesGHSA-fxmr-46xq-5m9m
PocketMine-MP versions before 4.2.3 fail to validate damage metadata values in tool and armor...
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.
- Record
GHSA-fxmr-46xq-5m9m- CVSS 4.0
- 7.1 High
CVSS:4.0/AV:N/AC:L/AT:N/PR:L/UI:N/VC:N/VI:N/VA:H/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 - CVSS 3.1
- 6.5 Medium
CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H - Weakness
- CWE-20
- Updated
- 2026-11-02
NVD
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.
- Record
CVE-2022-51013- CVSS 4.0
- 7.1 High
CVSS:4.0/AV:N/AC:L/AT:N/PR:L/UI:N/VC:N/VI:N/VA:H/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 - CVSS 3.1
- 6.5 Medium
CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H - Weakness
- CWE-20
- Updated
- 2026-11-02
OSV
PocketMine-MP before 4.2.3 Denial of Service via NBT Metadata
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.
- Record
CVE-2022-51013- CVSS 4.0
- 7.1 High
CVSS:4.0/AV:N/AC:L/AT:N/PR:L/UI:N/VC:N/VI:N/VA:H/SC:N/SI:N/SA:N - Weakness
- CWE-20
- Updated
- 2026-11-02
OSVGHSA-46c5-pfj8-fv65
Improperly checked metadata on tools/armour itemstacks received from the client
Impact
Due to a workaround applied in 1.13, an attacker may send a negative damage/meta value in a tool or armour item's NBT, which TypeConverter then blindly uses as if it was valid without being checked.
When this invalid metadata value reaches Durable->setDamage(), an exception is thrown because the metadata is not within the expected range for damage values.
This can be reproduced with either a too-large damage value, or a negative one.
Patches
c8e1cfcbee4945fd4b63d2a7e96025c59744d4f1
Workarounds
In theory this can be checked by plugins using a custom TypeConverter, but this is likely to be very cumbersome.
For more information
- Email us at [email protected]
- Record
GHSA-46c5-pfj8-fv65- CVSS 3.1
- 7.5 High
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H - Weakness
- CWE-704
- Updated
- 2026-11-02
Affected products
Affected packages
| Package | Affected | Fixed |
|---|---|---|
pocketmine/pocketmine-mpPackagist |
before 4.2.4 | 4.2.4 |
pocketmine/pocketmine-mpPackagist |
before 4.2.4, plus listed versions 3.0.03.0.13.0.103.0.113.0.12 Show 45 moreShow less3.0.23.0.33.0.43.0.53.0.63.0.73.0.83.0.93.1.03.1.13.1.23.1.33.1.43.1.53.1.63.1.73.1.83.10.03.10.13.11.03.11.13.11.23.11.33.11.43.11.53.11.63.11.73.12.03.12.13.12.23.12.33.12.43.12.53.12.63.13.03.13.13.14.03.14.13.14.23.14.33.15.03.15.13.15.23.15.33.15.4 |
4.2.4 |
History
| Recorded | Changed | Sources |
|---|---|---|
| first indexed | CVE List, EUVD, GitHub Advisories, NVD, OSV |
Dates are when Every CVE recorded each change. Upstream dates may differ.
In short
CVE-2022-51013 is a high vulnerability (CVSS 7.1) in Pmmp Pocketmine-mp, published March 18, 2022. No source lists public exploit code. EPSS puts the chance of exploitation in the next 30 days at 0.53%, the 45th percentile. Fixed in pocketmine/pocketmine-mp 4.2.4.
References
github.com/pmmp/PocketMine-MP/security/advisories/GHSA-46c5-pfj8-fv65
vulncheck.com/advisories/pocketmine-mp-before-4.2.3-denial-of-service-via-nbt-metadata
nvd.nist.gov/vuln/detail/CVE-2022-51013
Left out here: 135 versions. The JSON record has them.