What is CVE-2020-17517?

CVE-2020-17517 is a high-severity vulnerability in Apache Ozone, classified under Improper Authorization. CVSS score: 7.5/10. Published 2021-04-27.

How severe is CVE-2020-17517?

High severity. CVSS v3 base score is 7.5 out of 10.

Auth bypass in Apache Ozone

CVE-2020-17517

The S3 buckets and keys in a secure Apache Ozone Cluster must be inaccessible to anonymous access by default. The current security vulnerability allows access to keys and buckets through a curl command or an unauthenticated HTTP request. This enables unauthorized access to buckets and keys thereby exposing data to anonymous clients or users. This affected Apache Ozone prior to the 1.1.0 release.

Published 2021-04-27 · last modified 2026-06-17.

CVSS v3 metric

CVSS v3 base score 7.5 (High). Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:N.

EPSS exploit prediction

EPSS: 0.023 (82.9th percentile), scored 2026-10-22.

Low probability of exploitation in the next 30 days, but still tracked. 83rd percentile — 82.9% of CVEs in the catalogue have a lower EPSS than this one. How to read EPSS.

EPSS over last 30 days · oldest: 0.023 · newest: 0.023 · change: 0.000

Affected products

Apache Ozone
Apache Software Foundation Ozone — versions Apache Ozone

Weakness classification (CWE)

References

lists.apache.org/thread.html/rdd59a176b32c63f7fc0865428bf9bbc69297fa17f6130c80c… (Mailing List, Vendor Advisory)

Frequently asked questions

What is CVE-2020-17517?: CVE-2020-17517 is a high-severity vulnerability in Apache Ozone, classified under Improper Authorization. CVSS score: 7.5/10. Published 2021-04-27.
How severe is CVE-2020-17517?: High severity. CVSS v3 base score is 7.5 out of 10.