CVE-2025-27821

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Source
https://cve.org/CVERecord?id=CVE-2025-27821
Import Source
https://storage.googleapis.com/osv-test-cve-osv-conversion/osv-output/CVE-2025-27821.json
JSON Data
https://api.test.osv.dev/v1/vulns/CVE-2025-27821
Aliases
Downstream
Published
2026-01-26T09:44:13.532Z
Modified
2026-05-18T05:57:25.987409728Z
Severity
  • 7.3 (High) CVSS_V3 - CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:L/A:L CVSS Calculator
Summary
HDFS native client: Out of bounds write in URI parser of native HDFS client
Details

Out-of-bounds Write vulnerability in Apache Hadoop HDFS native client.

This issue affects Apache Hadoop: from 3.2.0 before 3.4.2.

Users are recommended to upgrade to version 3.4.2, which fixes the issue.

Database specific 
{
    "unresolved_ranges": [
        {
            "source": "AFFECTED_FIELD",
            "extracted_events": [
                {
                    "introduced": "3.2.0"
                },
                {
                    "fixed": "3.4.2"
                }
            ]
        },
        {
            "source": "DESCRIPTION",
            "extracted_events": [
                {
                    "introduced": "3.2.0"
                },
                {
                    "fixed": "3.4.2"
                }
            ]
        }
    ],
    "osv_generated_from": "https://github.com/CVEProject/cvelistV5/tree/main/cves/2025/27xxx/CVE-2025-27821.json",
    "cna_assigner": "apache",
    "cwe_ids": [
        "CWE-787"
    ]
}
References

Affected packages

Git / github.com/apache/hadoop

Affected ranges

Type
GIT
Repo
https://github.com/apache/hadoop
Events
Introduced
e97acb3bd8f3befd27418996fa5d4b50bf2e17bf
Fixed
84e8b89ee2ebe6923691205b9e171badde7a495c
Database specific 
{
    "cpe": "cpe:2.3:a:apache:hadoop:*:*:*:*:*:*:*:*",
    "source": "CPE_FIELD",
    "extracted_events": [
        {
            "introduced": "3.2.0"
        },
        {
            "fixed": "3.4.2"
        }
    ]
}

Database specific

source 
"https://storage.googleapis.com/osv-test-cve-osv-conversion/osv-output/CVE-2025-27821.json"