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CVE-2021-30180

Apache Dubbo RCE on customers via Condition route poisoning (Unsafe YAML unmarshaling)

CRITICAL
9.8
CVSS Score
Published: May 31, 2021 at 07:25 AM UTC
Updated: June 17, 2026 at 03:49 AM UTC
1 product affected across 1 vendorDubbo

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Severity
CRITICAL9.8
Exploit prediction
EPSS 60%

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

Our own answer: ranges merged, affected separated from platform-only, with confidence and review flags.

Dubbo· Apache
95%
2.7.0 ≤ v < 2.7.10Apache Dubbo 2.7.x ≤ v < 2.7.92.7.x
Affected range stops below 2.7.10, so it looks safe — our inference, not a vendor statement
Affected range stops below 2.7.9, so it looks safe — our inference, not a vendor statement

Remediation

No guide yet

No remediation guidance has been written for this CVE yet. What the record does show:

Patch and advisory references

References (1)

x_refsource_MISCMailing ListVendor Advisory
Source: [email protected]
https://lists.apache.org/thread.html/raed526465e56204030ddf374b1959478a290e7511971d7aba2e9e39b%40%3Cdev.dubbo.apache.org%3E

CVSS

9.8CRITICAL[email protected]
Attack Vector
NETWORK
Complexity
LOW
Privileges
NONE
User Interaction
NONE
Scope
UNCHANGED
Confidentiality
HIGH
Integrity
HIGH
Availability
HIGH
Vector?

Quick Info

StatusMODIFIED
CWE
CWE-444

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