What’s Vulnerable › Vulnerabilities

CVE-2021-30180: Apache Dubbo RCE on customers via Condition route poisoning (Unsafe YAML unmarshaling)

• Severity: critical (CVSS 9.8 v3.1)
• Exploited in the wild: not listed in CISA KEV
• EPSS: 60.3% probability of exploitation in the next 30 days
• Public exploit or detection template: none known
• Published: 2021-06-01 · updated 2026-06-17
• Weakness: CWE-444

Description

Apache Dubbo prior to 2.7.9 support Tag routing which will enable a customer to route the request to the right server. These rules are used by the customers when making a request in order to find the right endpoint. When parsing these YAML rules, Dubbo customers may enable calling arbitrary constructors.

Affected products

• Apache Software Foundation Apache Dubbo: from 2.7.0 before 2.7.10 — fixed in 2.7.10

How to fix

Upgrade to a fixed version: Apache Software Foundation Apache Dubbo 2.7.10. Check the vendor advisory for mitigations.

References

• https://lists.apache.org/thread.html/raed526465e56204030ddf374b1959478a290e7511971d7aba2e9e39b%40%3Cdev.dubbo.apache.org%3E
• https://lists.apache.org/thread.html/raed526465e56204030ddf374b1959478a290e7511971d7aba2e9e39b%40%3Cdev.dubbo.apache.org%3E

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