CVE-2021-30179
Apache Dubbo prior to 2.6.9 and 2.7.9 by default supports generic calls to arbitrary methods exposed by provider interfaces.
Does this matter?
High impact if exploited, but EPSS currently rates exploitation as unlikely (4.08%). Schedule it in the normal patch cycle and watch for a rise in EPSS or a public exploit.
Description
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.
- CVSS 3.1
- 9.8 CRITICALCVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
- EPSS
- 4.08% probability · 91th percentile
- Public exploits
- None in Exploit-DB
- CISA KEV
- Not listed
- Weakness
- CWE-502
- Affected
- apache/dubbo
- Source
- security@apache.org
EPSS 4.1% since 26 October 2026; no change recorded yet. Points are recorded when the score first appears and whenever it moves by a percentage point or more.
References
- https://lists.apache.org/thread.html/rccbcbdd6593e42ea3a1e8fedd12807cb111375c9c40edb005ef36f67%40%3Cdev.dubbo.apache.org%3EMailing List, Vendor Advisory
- https://lists.apache.org/thread.html/rccbcbdd6593e42ea3a1e8fedd12807cb111375c9c40edb005ef36f67%40%3Cdev.dubbo.apache.org%3EMailing List, Vendor Advisory
- https://lists.apache.org/thread.html/rccbcbdd6593e42ea3a1e8fedd12807cb111375c9c40edb005ef36f67%40%3Cdev.dubbo.apache.org%3EMailing List, Vendor Advisory
- https://lists.apache.org/thread.html/rccbcbdd6593e42ea3a1e8fedd12807cb111375c9c40edb005ef36f67%40%3Cdev.dubbo.apache.org%3EMailing List, Vendor Advisory
- https://lists.apache.org/thread.html/rccbcbdd6593e42ea3a1e8fedd12807cb111375c9c40edb005ef36f67%40%3Cdev.dubbo.apache.org%3EMailing List, Vendor Advisory
- https://lists.apache.org/thread.html/rccbcbdd6593e42ea3a1e8fedd12807cb111375c9c40edb005ef36f67%40%3Cdev.dubbo.apache.org%3EMailing List, Vendor Advisory
- https://lists.apache.org/thread.html/rccbcbdd6593e42ea3a1e8fedd12807cb111375c9c40edb005ef36f67%40%3Cdev.dubbo.apache.org%3EMailing List, Vendor Advisory
- https://lists.apache.org/thread.html/rccbcbdd6593e42ea3a1e8fedd12807cb111375c9c40edb005ef36f67%40%3Cdev.dubbo.apache.org%3EMailing List, Vendor Advisory
Source: NVD record, EPSS from FIRST.org, KEV from CISA, exploits from Exploit-DB. Refreshed daily. Download this record as JSON.