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CVE-2021-30181

64
FAUCET Score

CVE-2021-30181 is a critical vulnerability affecting Apache Dubbo versions prior to 2.6.9 and 2.7.9. It stems from the Script routing feature, which, when parsing routing rules, can allow for the execution of arbitrary code due to its use of ScriptEngine. This vulnerability carries a CVSS score of 9.8 (CRITICAL), indicating a network-exploitable flaw with low attack complexity and high impact on confidentiality, integrity, and availability. While the vulnerability is severe, there is currently no evidence of active exploitation, public exploit code (Metasploit, Nuclei, ExploitDB), or significant community discussion or media coverage surrounding it.

Impacted Technologies

VendorProductVersion(s)CPE
>= 2.5.0, < 2.6.10CPE matchmatch criteria
cpe:2.3:a:apache:dubbo:*:*:*:*:*:*:*:*
>= 2.7.0, < 2.7.10CPE matchmatch criteria
cpe:2.3:a:apache:dubbo:*:*:*:*:*:*:*:*

CVSS Data

CVSS version used by this source: 3.1

9.8CRITICAL

CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H

Attack Vector
NETWORK
Attack Complexity
LOW
Privileges Required
NONE
User Interaction
NONE
Scope
UNCHANGED
Confidentiality Impact
HIGH
Integrity Impact
HIGH
Availability Impact
HIGH
Exploitability Score
3.9
Impact Score
5.9
CvssVersion
3.1

Exploit Intelligence

EPSS Score
61.46%
Probability of exploitation in next 30 days
EPSS Percentile
99.1%
Percentile rank of EPSS score among Peer Group
As of 2026-07-27
Model: v2026.06.15
This CVE's current EPSS score of 0.6146 is in the 97th percentile among its peer group of 36,862 CVEs.

Social Chatter

The average CVE in this peer group has 0.0 Twitter, 0.1 Reddit, 0.3 Bluesky, 0.3 Mastodon, and 2.4 GitHub mentions.

Media Mentions

No media coverage found for this CVE.

The average CVE in this peer group has 0.3 InfoSec Media, 0.0 Vendor Blog, and 0.0 Security Researcher mentions.

Remediation

Patch Available

Vendor Patches (2)

mavenpatch availablevia ghsa
Product: com.alibaba:dubboFixed in: 2.6.9
mavenpatch availablevia ghsa
Product: org.apache.dubbo:dubboFixed in: 2.7.10

Vendor Advisories (1)

mavenGHSA-qmfc-6www-fjqwcritical

Code injection in Apache Dubbo

Mar 18, 2022

References

lists.apache.org / thread.html/re22410dc704a09bc7032ddf15140cf5e7df3e8ece390fc9032ff5587%40%3Cdev.dubbo.apache.org%3E
Mailing ListVendor Advisory