Vulnerability in Apache Dubbo
CVE-2021-30180
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.
Vulnerability class: HTTP Request Smuggling
Published · last modified .
CVSS v3 metric
CVSS v3 base score 9.8 (Critical). Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H.
EPSS exploit prediction
EPSS: 0.603 (99.1th percentile), scored .
High probability of exploitation in the next 30 days — patch promptly. 99th percentile — 99.1% of CVEs in the catalogue have a lower EPSS than this one. How to read EPSS.
EPSS over last 30 days · oldest: 0.603 · newest: 0.603 · change: 0.000
Affected products
- Apache Dubbo
- Apache Software Foundation Dubbo — versions Apache Dubbo 2.7.x
Weakness classification (CWE)
Public proof-of-concept exploits
References
- lists.apache.org/thread.html/raed526465e56204030ddf374b1959478a290e7511971d7aba… (Mailing List, Vendor Advisory)
Frequently asked questions
- What is CVE-2021-30180?
- CVE-2021-30180 is a critical-severity vulnerability in Apache Dubbo, classified under Inconsistent Interpretation of HTTP Requests (HTTP Request/Response Smuggling). CVSS score: 9.8/10. Published 2021-06-01.
- How severe is CVE-2021-30180?
- Critical severity. CVSS v3 base score is 9.8 out of 10.
- Is CVE-2021-30180 known to be exploited?
- 7 public proof-of-concept repositories are indexed. Not currently listed in the CISA KEV catalog.