Read the docs
TI-2021-10719 Aliases CVE-2021-30179GHSA-5mc7-m686-p6jg

Apache Dubbo Pre-auth RCE via Java deserialization in the Generic filter

Priority MEDIUM 49CWE-502Published · Updated

Key facts

Attack vector
Network
Privileges required
None
User interaction
None
Attack complexity
Low
Impact type
Code execution
Confidentiality · integrity · availability
High · High · High
Fix status
Fixed

Attack profile from CVSS 3.1 · NVD. Fix status from CNA and GitHub. Impact type from CWE-502.

Summary

Apache Dubbo prior to 2.6.9 and 2.7.9 by default supports generic calls to arbitrary methods exposed by provider interfaces. These invocations are handled by the GenericFilter which will find the service and method specified in the first arguments of the invocation and use the Java Reflection API to make the final call. The signature for the $invoke or $invokeAsync methods is Ljava/lang/String;[Ljava/lang/String;[Ljava/lang/Object; where the first argument is the name of the method to invoke, the second one is an array with the parameter types for the method being invoked and the third one is an array with the actual call arguments. In addition, the caller also needs to set an RPC attachment specifying that the call is a generic call and how to decode the arguments. The possible values are: - true - raw.return - nativejava - bean - protobuf-json An attacker can control this RPC attachment and set it to nativejava to force the java deserialization of the byte array located in the third argument.

Why it matters now

EPSS 0.04084 90th percentileScored 2026-11-07
Fix Fixed Apache Dubbo (Apache Software Foundation): 2.7.9, 2.6.9org.apache.dubbo:dubbo (Maven): 2.7.10+1 more product

SSVC decision points

Not available: CISA has not published SSVC decision points for this record.

Affected products

VendorProductAffected versionsFixed inStatusSource
ApacheApache DubboApache Dubbo 2.7.x to before 2.7.9; Apache Dubbo 2.6.x to before 2.6.92.7.9, 2.6.9Patch availableCNA
—org.apache.dubbo:dubbo (Maven)2.5.0 to before 2.7.102.7.10Patch availableGHSA-5mc7-m686-p6jg
—com.alibaba:dubbo (Maven)2.5.0 to before 2.6.92.6.9Patch availableGHSA-5mc7-m686-p6jg
  • Apache Dubbo VendorApache Affected Apache Dubbo 2.7.x to before 2.7.9; Apache Dubbo 2.6.x to before 2.6.9 Fixed in 2.7.9, 2.6.9 Patch available CNA
  • org.apache.dubbo:dubbo (Maven) Vendor— Affected 2.5.0 to before 2.7.10 Fixed in 2.7.10 Patch available GHSA-5mc7-m686-p6jg
  • com.alibaba:dubbo (Maven) Vendor— Affected 2.5.0 to before 2.6.9 Fixed in 2.6.9 Patch available GHSA-5mc7-m686-p6jg

CPE configurations NVD · 1

CPEVersionsRoleVendor
cpe:2.3:a:apache:dubbo:*:*:*:*:*:*:*:*2.5.0 – 2.5.10; 2.6.0 to before 2.6.9; 2.7.0 to before 2.7.10VulnerableApache
  • cpe:2.3:a:apache:dubbo:*:*:*:*:*:*:*:* Versions 2.5.0 – 2.5.10; 2.6.0 to before 2.6.9; 2.7.0 to before 2.7.10 Vulnerable ·Apache

Remediation

  • Fix · CNA Apache Dubbo (Apache Software Foundation) Fixed in 2.7.9, 2.6.9
  • Fix · GHSA-5mc7-m686-p6jg org.apache.dubbo:dubbo (Maven) Fixed in 2.7.10 Advisory →
  • Fix · GHSA-5mc7-m686-p6jg com.alibaba:dubbo (Maven) Fixed in 2.6.9 Advisory →

Fixed in the same release

Records fixed by the same vendor advisory or release, as the CNA lists them.

  • Release ·

    Apache Dubbo 2.6.9, 2.7.9

    2 records Highest priority Priority MEDIUM 1 MEDIUM, 1 LOW

    Other records, highest priority first

    • TI-2021-07773 Open Redirect or SSRF vulnerability usage of parseURLPriority LOW 31
    Show all 2 records →

Timeline

  1. 2026-10-02 Threatist record created from CVE-2021-30179
  2. 2026-10-03 Alias added: GHSA-5mc7-m686-p6jg

References

Advisory 2

Other 1

  • TI-2021-12489 Regular expression Denial of Service in MooTools CVSS 3.1CRITICAL 9.8
  • TI-2021-10721 Apache Dubbo RCE on customers via Script route poisoning (Nashorn script injection) CVSS 3.1CRITICAL 9.8
  • TI-2021-10720 Apache Dubbo RCE on customers via Condition route poisoning (Unsafe YAML unmarshaling) CVSS 3.1CRITICAL 9.8
  • TI-2019-13107 Deserialization of untrusted data in Apache Dubbo CVSS 3.1CRITICAL 9.8
  • TI-2021-07774 Dubbo Zookeeper does not check serialization id CVSS 3.1CRITICAL 9.8
  • TI-2021-19290 Dubbo Hessian cause RCE when parse error CVSS 3.1CRITICAL 9.8
See all 18 →

Sources

This product uses the NVD API but is not endorsed or certified by the NVD. Sources and licences