How severe is CVE-2020-17517?

CVE-2020-17517 has a CVSS 3.x base score of 7.5, rated high severity. It is exploitable over network with low attack complexity, requires no privileges and no user interaction. Impact on confidentiality is high, integrity none, and availability none.

Is CVE-2020-17517 being actively exploited?

It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 2% (81st percentile), an estimate of the probability of exploitation in the next 30 days.

What products are affected by CVE-2020-17517?

CVE-2020-17517 affects Apache Ozone. See the affected-products list for the exact vulnerable versions.

How do I fix CVE-2020-17517?

Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround. Given its high severity, prioritise patching exposed systems.

When was CVE-2020-17517 published?

CVE-2020-17517 was published on 2021-04-27 and last updated on 2026-06-17.

CVE-2020-17517

CVE-2020-17517 is a high-severity vulnerability in Apache Ozone with a CVSS 3.x base score of 7.5. It is not currently listed as actively exploited by CISA, and its EPSS exploit-prediction score is low. The underlying weakness is classified as CWE-306.

Key facts

Severity: High (CVSS 3.x base score 7.5)
CVSS v2: 5.0
EPSS exploit prediction: 2% (81st percentile)
Actively exploited: Not listed in CISA KEV
Weakness: CWE-306
Affected product: Apache Ozone
Published: 2021-04-27
Last modified: 2026-06-17

Description

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.

Frequently asked questions

What is 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.
How severe is CVE-2020-17517?: CVE-2020-17517 has a CVSS 3.x base score of 7.5, rated high severity. It is exploitable over network with low attack complexity, requires no privileges and no user interaction. Impact on confidentiality is high, integrity none, and availability none.
Is CVE-2020-17517 being actively exploited?: It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 2% (81st percentile), an estimate of the probability of exploitation in the next 30 days.
What products are affected by CVE-2020-17517?: CVE-2020-17517 affects Apache Ozone. See the affected-products list for the exact vulnerable versions.
How do I fix CVE-2020-17517?: Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround. Given its high severity, prioritise patching exposed systems.
When was CVE-2020-17517 published?: CVE-2020-17517 was published on 2021-04-27 and last updated on 2026-06-17.

References

https://lists.apache.org/thread.html/rdd59a176b32c63f7fc0865428bf9bbc69297fa17f6130c80c25869aa%40%3Cdev.ozone.apache.org%3E

Affected products (1)

cpe:2.3:a:apache:ozone:*:*:*:*:*:*:*:*

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