What is CVE-2021-36372?

CVE-2021-36372 is a critical-severity vulnerability in Apache Ozone, classified under Improper Check for Dropped Privileges. CVSS score: 9.8/10. Published 2021-11-19.

How severe is CVE-2021-36372?

Critical severity. CVSS v3 base score is 9.8 out of 10.

Vulnerability in Apache Ozone

CVE-2021-36372

In Apache Ozone versions prior to 1.2.0, Initially generated block tokens are persisted to the metadata database and can be retrieved with authenticated users with permission to the key. Authenticated users may use them even after access is revoked.

Published 2021-11-19 · last modified 2026-06-17.

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: 0.025 (84.7th percentile), scored 2026-10-22.

Low probability of exploitation in the next 30 days, but still tracked. 85th percentile — 84.7% of CVEs in the catalogue have a lower EPSS than this one. How to read EPSS.

EPSS over last 30 days · oldest: 0.025 · newest: 0.025 · change: 0.000

Affected products

Apache Ozone
Apache Software Foundation Ozone — versions 1.1

Weakness classification (CWE)

CWE-273 — Improper Check for Dropped Privileges

References

mail-archives.apache.org/mod_mbox/ozone-dev/202111.mbox/<5029c1ac-4685-8492-e3c… (Mailing List, Mitigation, Vendor Advisory)
www.openwall.com/lists/oss-security/2021/11/19/1 (mailing-list, Third Party Advisory)

Frequently asked questions

What is CVE-2021-36372?: CVE-2021-36372 is a critical-severity vulnerability in Apache Ozone, classified under Improper Check for Dropped Privileges. CVSS score: 9.8/10. Published 2021-11-19.
How severe is CVE-2021-36372?: Critical severity. CVSS v3 base score is 9.8 out of 10.