CVE-2021-39236

mediumpriority · track · 36OT risk · elevatedEPSS 0.026 · 86 %ileEUUS

grimoire priorityP3 · Track

Exploitable?

—

no known exploitation

Likely / severe?

2.64% (86th) EPSS

CVSS 6.5 · medium

Is it mine?

3 products

Check your exposure

Who says so?

4 sources

cnnvd · enisa_euvd · nvd · osv

EPSS · scored 2026-10-28

In Apache Ozone before 1.2.0, Authenticated users with valid Ozone S3 credentials can create specific OM requests, impersonating any other user.

cvss

Technical severity, 0–10. One row per scoring source.

8.8

010

base score 0–10 · higher = more severe · hover a vector to decode⚠ sources disagree · medium–high · 6.5–8.8

v2.06.5mediumAV:N/AC:L/Au:S/C:P/I:P/A:Pprimary · NVD / NIST USexploitability 8 · impact 6.4

v3.18.8highCVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:Hprimary · NVD / NIST USexploitability 2.8 · impact 5.9

v3.18.8highCVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:Hsecondary · OSV

v3.18.1highCVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H/E:Usecondary · CVSS-BT (t0sche)

weaknesses

The CWE weakness classes this flaw belongs to.

CWE-862USprimaryCWE-862USCWE-863US

affected products (3)

Products and version ranges known to be affected.

Apache Software Foundation Apache Ozone≤ 1.0 ≤1.0enisa_euvdEU
apache ozone< 1.2.0nvdUScpe:2.3:a:apache:ozone:*:*:*:*:*:*:*:*
Maven org.apache.hadoop:hadoop-ozone-ozone-manager< 1.2.0osvUSpkg:maven/org.apache.hadoop/hadoop-ozone-ozone-manager

advisories (1)

Vendor and ecosystem advisories describing this.

GHSA-5993-wwpg-m92cApache Ozone user impersonation due to non-validation of Ozone S3 tokens2021-11-23ghsa · osvUS
In Apache Ozone before 1.2.0, Authenticated users with valid Ozone S3 credentials can create specific OM requests, impersonating any other user.

also known as (3)

Other names and identifiers for this entity.

sources

Which sources assert this record, and when.

cnnvd enisa_euvd nvd osv NVD CVE.org MITRE

published 2021-11-19modified 2026-06-17

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+11503 more

references (8)

External citations — patches, advisories, analysis.

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