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Fencer Intel
critical 9.8

CVE-2021-30181 in the critical feed json

Apache Dubbo RCE on customers via Script route poisoning (Nashorn script injection)

published 5y ago modified 4mo ago also GHSA-qmfc-6www-fjqw , EUVD-2022-1521

cvss
9.8
version 3.1, NVD
cisa kev
Not listed
not in CISA's catalog
epss
60.9%
EPSS 60.9% chance of exploitation in 30 days, percentile 99.1%
public exploits
0
none known

Summary

Apache Dubbo prior to 2.6.9 and 2.7.9 supports Script 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 rules, Dubbo customers use ScriptEngine and run the rule provided by the script which by default may enable executing arbitrary code.

Patch / fix

  • maven com.alibaba:dubbo 2.6.9
  • maven org.apache.dubbo:dubbo 2.7.10
  • Apache Software Foundation Apache Dubbo 2.6.9, 2.7.9

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Exploit prediction

60.86% chance of exploitation in the next 30 days, higher than 99.1% of all scored CVEs (FIRST EPSS, 2026-11-09).

CVSS scores

assigned by version score vector
NVD 3.1 9.8 CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
NVD 2.0 7.5 AV:N/AC:L/Au:N/C:P/I:P/A:P
GitHub 3.1 9.8 CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H

Affected packages

ecosystem package affected fixed in
maven com.alibaba:dubbo
>=2.5.0, <2.6.9
2.6.9
maven org.apache.dubbo:dubbo
>=2.5.0, <2.7.10
2.7.10

Affected products

  • Apache Software Foundation Apache Dubbo

Classification

Weakness
  • CWE-94 Improper Control of Generation of Code

References

Sources

Fencer Intel keeps one entry per vulnerability: the CVE id wins, then GHSA, and records that alias each other are merged, except that two CVEs always keep separate entries. The same data is available as JSON.