CVEvulnerability

CVE-2021-33790

9.8 CRITICAL Published 2021-05-31 Modified 2026-06-17 Official page ↗
Status
Modified
Published
2021-05-31
Last modified
2026-06-17
Assigner
[email protected]
CVSS 3.1 ([email protected])
9.8 CRITICAL — CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
CVSS 2.0 ([email protected])
7.5 HIGH — AV:N/AC:L/Au:N/C:P/I:P/A:P
Weaknesses
CWE-502

Description

The RebornCore library before 4.7.3 allows remote code execution because it deserializes untrusted data in ObjectInputStream.readObject as part of reborncore.common.network.ExtendedPacketBuffer. An attacker can instantiate any class on the classpath with any data. A class usable for exploitation might or might not be present, depending on what Minecraft modifications are installed.

Affected configurations

• techreborn reborncore (<= 3.13.8) • techreborn reborncore (>= 3.19.0 < 3.19.5) • techreborn reborncore (>= 4.2.0 < 4.2.10) • techreborn reborncore (>= 4.7.0 < 4.7.3)

Related

Weakness · CWE (1)

  • CWE-502 Deserialization of Untrusted Data weakness

References