Redpanda through 26.2.2 binds the Admin API to 0.0.0.0:9644 with admin_api_require_auth defaulting to false, treating unauthenticated requests as superusers. Attackers can reach port 9644 without credentials to create and delete broker accounts, modify cluster configuration, and disrupt partition replication.

Attack Vector Network

Attack Complexity Low

Privileges Required None

Attack Requirements None

User Interaction None

Vulnerable System Confidentiality Impact High

Vulnerable System Integrity Impact High

Vulnerable System Availability Impact High

Subsequent System Confidentiality Impact None

Subsequent System Integrity Impact None

Subsequent System Availability Impact None

Attack Vector Network

Attack Complexity Low

Privileges Required None

Scope Unchanged

Confidentiality Impact High

Integrity Impact High

Availability Impact High

User Interaction None

No CVSS v3.0

No CVSS v2

This CVE is not in the KEV list.

No EPSS score available.

Key SSVC decision points have not yet been added.

Default status is the baseline for the product, each version can override it (e.g. patched versions marked unaffected).

Vendor Product Default status Versions
redpanda-data redpanda unaffected
Version Status Constraints
0 affected ≤ 26.2.2

No data.

No data.

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No data.

Project Subscriptions

Vendors Products
Redpanda Subscribe
Redpanda Subscribe
Advisories

No advisories yet.

Fixes

Solution

No solution given by the vendor.

Workaround

No workaround given by the vendor.

References
Link Providers
https://github.com/redpanda-data/redpanda cve-icon cve-icon
https://github.com/redpanda-data/redpanda/blob/3cfce474a872090e7c74d14181885f5838c54cf2/conf/redpanda.yaml cve-icon cve-icon
https://github.com/redpanda-data/redpanda/blob/3cfce474a872090e7c74d14181885f5838c54cf2/src/v/security/request_auth.cc cve-icon cve-icon
https://github.com/redpanda-data/redpanda/issues/30989 cve-icon cve-icon
https://www.vulncheck.com/advisories/redpanda-admin-api-unauthenticated-superuser-access-via-default-configuration cve-icon cve-icon
History

Fri, 28 Aug 2026 19:45:00 +0000

Type Values Removed Values Added
Description Redpanda through 26.2.2 binds the Admin API to 0.0.0.0:9644 with admin_api_require_auth defaulting to false, treating unauthenticated requests as superusers. Attackers can reach port 9644 without credentials to create and delete broker accounts, modify cluster configuration, and disrupt partition replication.
Title Redpanda Admin API Unauthenticated Superuser Access via Default Configuration
First Time appeared Redpanda
Redpanda redpanda
Weaknesses CWE-306
CPEs cpe:2.3:a:redpanda:redpanda:*:*:*:*:*:*:*:*
Vendors & Products Redpanda
Redpanda redpanda
References
Metrics cvssV3_1

{'score': 9.8, 'vector': 'CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H'}

cvssV4_0

{'score': 9.3, 'vector': 'CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:H/VI:H/VA:H/SC:N/SI:N/SA:N'}

Projects

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cve-icon MITRE

Status: PUBLISHED

Assigner: VulnCheck

Published:

Updated: 2026-08-28T16:18:50.727Z

Reserved: 2026-08-28T11:12:37.042Z

Link: CVE-2026-82266

cve-icon Vulnrichment

No data.

cve-icon NVD

Status : Received

Published: 2026-08-28T20:20:17.213

Modified: 2026-08-28T20:20:17.213

Link: CVE-2026-82266

cve-icon Redhat

No data.

cve-icon OpenCVE Enrichment

Updated: 2026-08-28T22:30:17Z

Weaknesses