Priority HIGH 77
PocketMine-MP before 5.41.1 contains a denial of service vulnerability in LoginPacket processing where large or complex structures in unknown clientData JWT properties cause excessive logging without sanitization.
CVSS 4.0HIGH 8.7· Network · No auth · No interaction · EPSS 0.00609 · Published 2026-09-09 · Fixed in 5.41.1 CWE-400
Priority HIGH 77
PocketMine-MP versions before 5.43.1 fail to properly validate the Certificate field during offline login authentication.
CVSS 4.0HIGH 8.7· Network · No auth · No interaction · EPSS 0.00467 · Published 2026-09-09 · Fixed in 5.43.1 CWE-184
Priority MEDIUM 64
PocketMine-MP versions before 5.39.2 fail to limit JSON payload size in ModalFormResponsePacket handling, allowing authenticated players to cause denial of service.
CVSS 4.0HIGH 7.1· Network · Low privileges · No interaction · EPSS 0.00436 · Published 2026-09-09 · Fixed in 5.39.2 CWE-400
Priority MEDIUM 45
PocketMine-MP before 5.11.1 contains a denial of service vulnerability in LoginPacket JSON processing that allows remote attackers to crash the server by sending malformed JSON data.
CVSS 4.0HIGH 8.7· Network · No auth · No interaction · EPSS 0.00775 · Published 2026-09-09 · Fixed in 5.11.1 CWE-502
Priority MEDIUM 45
PocketMine-MP versions before 4.20.5 contain a denial of service vulnerability in LoginPacket JSON parsing due to improper validation in the JsonMapper dependency.
CVSS 4.0HIGH 8.7· Network · No auth · No interaction · EPSS 0.0063 · Published 2026-09-09 · Fixed in 4.20.5, 4.21.1 CWE-20
Priority MEDIUM 45
PocketMine-MP versions before 5.3.1 and 4.23.1 contain a denial of service vulnerability in LoginPacket JSON parsing due to improper null value handling in arrays.
CVSS 4.0HIGH 8.7· Network · No auth · No interaction · EPSS 0.00609 · Published 2026-09-09 · Fixed in 4.23.1, 5.3.1 CWE-1025
Priority MEDIUM 45
PocketMine-MP versions before 3.26.5 and 4.0.5 fail to validate the length of skin data fields submitted by players, allowing uncapped values to exceed the 32767 byte TAG_String limit.
CVSS 4.0HIGH 8.7· Network · No auth · No interaction · EPSS 0.0063 · Published 2026-09-07 · Fixed in 3.26.5, 4.0.5 CWE-20
Priority MEDIUM 45
PocketMine-MP before 4.7.2 fails to properly handle exceptions from the adhocore/json-comment library when parsing skin geometry data.
CVSS 4.0HIGH 8.7· Network · No auth · No interaction · EPSS 0.00609 · Published 2026-09-06 · Fixed in 4.7.2 CWE-248
Priority MEDIUM 44
PocketMine-MP versions before 5.3.1 and 4.23.1 fail to validate that the identityPublicKey in LoginPacket uses the required secp384r1 elliptic curve.
CVSS 4.0HIGH 8.7· Network · No auth · No interaction · EPSS 0.00383 · Published 2026-09-09 · Fixed in 4.23.1, 5.3.1 CWE-347
Priority LOW 37
PocketMine-MP versions before 5.42.1 contain a denial of service vulnerability in the LoginPacket handler that allows remote attackers to flood warning messages by injecting numerous junk properties into the clientData J…
CVSS 4.0MEDIUM 6.9· Network · No auth · No interaction · EPSS 0.00637 · Published 2026-09-09 · Fixed in 5.42.1 CWE-779
Priority LOW 37
PocketMine-MP versions before 5.25.2 fail to limit the explode() function in packet parsing, allowing malicious clients to waste server resources.
CVSS 4.0MEDIUM 6.9· Network · No auth · No interaction · EPSS 0.00547 · Published 2026-09-09 · Fixed in 5.25.2 CWE-400
Priority LOW 37
PocketMine-MP before 4.12.3 fails to limit unauthenticated sessions, allowing attackers to exhaust player slots by creating sessions without sending LoginPacket.
CVSS 4.0MEDIUM 6.9· Network · No auth · No interaction · EPSS 0.00507 · Published 2026-09-06 · Fixed in 4.12.3 CWE-770
Priority LOW 32
PocketMine-MP before 5.32.1 fails to validate uniqueness of pack UUIDs in ResourcePackClientResponsePacket STATUS_SEND_PACKS handling, allowing authenticated clients to trigger duplicate pack transmissions.
CVSS 4.0HIGH 7.1· Network · Low privileges · No interaction · EPSS 0.00436 · Published 2026-09-09 · Fixed in 5.32.1 CWE-20
Priority LOW 32
PocketMine-MP versions before 5.11.2 contain a denial of service vulnerability in BookEditPacket handling that crashes the server when an invalid inventory slot value is provided.
CVSS 4.0HIGH 7.1· Network · Low privileges · No interaction · EPSS 0.0053 · Published 2026-09-09 · Fixed in 5.11.2 CWE-20
Priority LOW 32
PocketMine-MP versions before 4.8.1 fail to validate dye color IDs in banner NBT data during deserialization.
CVSS 4.0HIGH 7.1· Network · Low privileges · No interaction · EPSS 0.0053 · Published 2026-09-09 · Fixed in 4.8.1 CWE-129
Priority LOW 32
PocketMine-MP versions >= 4.20.0 before 4.22.3 (and before 5.2.1 in the 5.x branch) fail to validate NBT tag types in BlockActorDataPacket.
CVSS 4.0HIGH 7.1· Network · Low privileges · No interaction · EPSS 0.0053 · Published 2026-09-09 · Fixed in 4.22.3, 5.2.1 CWE-20
Priority LOW 32
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.
CVSS 4.0HIGH 7.1· Network · Low privileges · No interaction · EPSS 0.00436 · Published 2026-09-07 · Fixed in 3.26.5, 4.0.5 CWE-400
Priority LOW 32
PocketMine-MP before 4.0.6 does not validate facing values in PlayerActionPacket (for START_BREAK and CRACK_BREAK actions) or in UseItemTransactionData (typically within InventoryTransactionPacket).
CVSS 4.0HIGH 7.1· Network · Low privileges · No interaction · EPSS 0.00705 · Published 2026-09-07 · Fixed in 4.0.6 CWE-20
Priority LOW 32
PocketMine-MP before 4.0.7 contains an unhandled exception vulnerability in the ModalFormResponsePacket handler when processing malformed JSON from clients.
CVSS 4.0HIGH 7.1· Network · Low privileges · No interaction · EPSS 0.0053 · Published 2026-09-07 · Fixed in 4.0.7 CWE-248
Priority LOW 32
PocketMine-MP versions before 4.2.3 fail to validate damage metadata values in tool and armor item NBT data received from clients.
CVSS 4.0HIGH 7.1· Network · Low privileges · No interaction · EPSS 0.0053 · Published 2026-09-07 · Fixed in 4.2.3 CWE-20
Priority LOW 32
PocketMine-MP versions before 4.2.9 fail to properly validate NBT data types during deserialization of inventory transaction packets from clients.
CVSS 4.0HIGH 7.1· Network · Low privileges · No interaction · EPSS 0.0053 · Published 2026-09-07 · Fixed in 4.2.9 CWE-20
Priority LOW 32
PocketMine-MP versions before 4.4.2 fail to properly validate item IDs received from clients in itemstack NBT data.
CVSS 4.0HIGH 7.1· Network · Low privileges · No interaction · EPSS 0.0053 · Published 2026-09-07 · Fixed in 4.4.2 CWE-20
Priority LOW 32
PocketMine-MP versions before 3.18.1 fail to validate NaN or INF values in MovePlayerPacket position and rotation fields.
CVSS 4.0HIGH 7.1· Network · Low privileges · No interaction · EPSS 0.0053 · Published 2026-09-06 · Fixed in 3.18.1 CWE-20
Priority LOW 32
PocketMine-MP versions before 3.15.4 contain a denial of service vulnerability in the InventoryTransaction component's findResultItem() method.
CVSS 4.0HIGH 7.1· Network · Low privileges · No interaction · EPSS 0.0053 · Published 2026-09-06 · Fixed in 3.15.4 CWE-400
Priority LOW 31
PocketMine-MP versions prior to 4.18.1 contain an improper input validation vulnerability in inventory transaction handling.
CVSS 4.0HIGH 7.1· Network · Low privileges · No interaction · EPSS 0.00396 · Published 2025-12-31 · Fixed in 4.18.1 CWE-1284
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