CVE-2026-24794
Buffer Overflow in Cardboard WorldImpl.java Before
Publication date: 2026-01-27
Last updated on: 2026-01-27
Assigner: Government Technology Agency of Singapore Cyber Security Group (GovTech CSG)
Description
Description
CVSS Scores
EPSS Scores
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Meta Information
Affected Vendors & Products
| Vendor | Product | Version / Range |
|---|---|---|
| cardboardpowered | cardboard | to 1.21.4 (exc) |
Helpful Resources
Exploitability
| CWE ID | Description |
|---|---|
| CWE-119 | The product performs operations on a memory buffer, but it reads from or writes to a memory location outside the buffer's intended boundary. This may result in read or write operations on unexpected memory locations that could be linked to other variables, data structures, or internal program data. |
Attack-Flow Graph
AI Powered Q&A
Can you explain this vulnerability to me?
CVE-2026-24794 is a critical vulnerability in the CardboardPowered project related to improper handling during the chunk unloading process. The system attempts to unload chunks without proper safety checks, such as verifying if chunks are currently in use or performing null-checks on chunk references. This improper restriction of operations within memory buffer bounds can cause server crashes, data corruption, and may allow remote code execution. [1]
How can this vulnerability impact me? :
This vulnerability can lead to severe impacts including server crashes, which disrupt service availability; data corruption, which can result in loss or alteration of important data; and potential remote code execution, which could allow attackers to execute arbitrary code on the affected system, compromising security and control. [1]
How can this vulnerability be detected on my network or system? Can you suggest some commands?
Detection of this vulnerability involves monitoring for server crashes, data corruption, or abnormal behavior related to chunk unloading in the CardboardPowered server. Since the issue arises from unsafe operations on chunk references, you can check server logs for errors or exceptions related to chunk unloading. Specific commands are not provided in the resources, but general approaches include reviewing logs for stack traces or error messages around chunk unloading, and using debugging tools to trace chunk unload operations. Network detection is unlikely as this is a server-internal memory handling issue. [1]
What immediate steps should I take to mitigate this vulnerability?
Immediate mitigation involves updating the CardboardPowered software to version 1.21.4 or later, where the vulnerability has been fixed by adding proper safety validations during chunk unloading. If updating is not immediately possible, avoid operations that trigger chunk unloading or implement additional safety checks in your deployment to prevent unloading chunks that are in use or null references. Monitoring and restricting access to the server to trusted users can also reduce risk until the patch is applied. [1]