{"cve":"CVE-2021-39235","nvd":{"published":"2021-11-19T10:15:08.303","modified":"2026-06-17T04:03:22.343","status":"Modified","description":"In Apache Ozone before 1.2.0, Ozone Datanode doesn't check the access mode parameter of the block token. Authenticated users with valid READ block token can do any write operation on the same block.","cvss_v4":null,"cvss_v3":{"version":"3.1","vector":"CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:H/A:N","score":6.5},"cwes":["CWE-732"],"references":["http://www.openwall.com/lists/oss-security/2021/11/19/6","https://mail-archives.apache.org/mod_mbox/ozone-dev/202111.mbox/%3C93f88246-4320-7423-0dac-ec7a07f47455%40apache.org%3E","http://www.openwall.com/lists/oss-security/2021/11/19/6","https://mail-archives.apache.org/mod_mbox/ozone-dev/202111.mbox/%3C93f88246-4320-7423-0dac-ec7a07f47455%40apache.org%3E"],"products":["apache:ozone"],"source":"nvd","synced_at":"2026-10-19T21:25:41.256909649+00:00"},"epss":{"cve":"CVE-2021-39235","score":0.01551,"percentile":0.751,"date":"2026-10-31"},"kev":null,"osv":[{"id":"GHSA-c6j7-4fr9-c76p","url":"https://osv.dev/vulnerability/GHSA-c6j7-4fr9-c76p","summary":"Incorrect permissions in Apache Ozone","modified":"2023-11-14T21:48:57Z","packages":[{"ecosystem":"Maven","name":"org.apache.ozone:ozone-main","purl":"pkg:maven/org.apache.ozone/ozone-main","ranges":["<1.2.0"],"fixed":["1.2.0"]}]}],"attribution":["This product uses the NVD API but is not endorsed or certified by the NVD.","EPSS scores: FIRST Exploit Prediction Scoring System, https://www.first.org/epss","Known exploited vulnerabilities: CISA Known Exploited Vulnerabilities Catalog, https://www.cisa.gov/known-exploited-vulnerabilities-catalog","Package advisories: OSV (https://osv.dev), from the GitHub Advisory Database, PyPA, Go, RustSec and other ecosystem databases, under CC-BY 4.0 or CC0","CVE records: the CVE Program's CVE List (https://www.cve.org), under its terms of use (https://www.cve.org/Legal/TermsOfUse). CVE is a registered trademark of The MITRE Corporation; this product is not affiliated with the CVE Program."]}