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CVE-2026-82266— Redpanda Admin API Unauthenticated Superuser Access via Default Configuration

Quick assessment

Affected
redpanda-data redpanda
Exploitation
No confirmed in-the-wild exploitation; assess based on exposure
Recommended action
Check the vendor advisory and references for a fixed version. If immediate upgrade is impossible, restrict exposure and increase monitoring.

redpanda-data Redpanda是redpanda-data组织的一个高性能消息流处理平台。 redpanda-data Redpanda 26.2.2及之前版本存在授权问题漏洞，该漏洞源于Admin API绑定到0.0.0.0:9644且admin_api_require_auth默认为false，将未认证请求视为超级用户。攻击者无需凭据即可访问9644端口，从而创建和删除代理账户、修改集群配置以及破坏分区复制。

CVSS 9.8 · Critical EPSS 0.62% · P49

Possible ATT&CK Techniques 2 AI

T1133 · External Remote Services T1210.002

Affected Version Matrix 1

VendorProduct Version RangeStatus
redpanda-data redpanda ≤ 26.2.2 affected
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I. Basic Information for CVE-2026-82266

Vulnerability Information
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Vulnerability Title
Redpanda Admin API Unauthenticated Superuser Access via Default Configuration
Source: CVE Program / CVE List V5
Vulnerability 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.
Source: CVE Program / CVE List V5
CVSS Information
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
Source: CVE Program / CVE List V5
Vulnerability Type
关键功能的认证机制缺失
Source: CVE Program / CVE List V5
Vulnerability Title
redpanda-data Redpanda 授权问题漏洞
Source: CNNVD (China National Vulnerability Database)
Vulnerability Description
redpanda-data Redpanda是redpanda-data组织的一个高性能消息流处理平台。 redpanda-data Redpanda 26.2.2及之前版本存在授权问题漏洞，该漏洞源于Admin API绑定到0.0.0.0:9644且admin_api_require_auth默认为false，将未认证请求视为超级用户。攻击者无需凭据即可访问9644端口，从而创建和删除代理账户、修改集群配置以及破坏分区复制。
Source: CNNVD (China National Vulnerability Database)
CVSS Information
N/A
Source: CNNVD (China National Vulnerability Database)
Vulnerability Type
N/A
Source: CNNVD (China National Vulnerability Database)

Affected Products

Vendor Product Affected Versions CPE Subscribe
redpanda-data redpanda 0 ~ 26.2.2 -

II. Public POCs for CVE-2026-82266

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III. Intelligence Information for CVE-2026-82266

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Vendor Advisories for CVE-2026-82266 (2)

Vendor Pages for CVE-2026-82266 (1)

IV. Related Vulnerabilities

Same weakness: CWE-306