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CVE-2026-57111— Apache Helix REST: Permissive CORS Configuration in REST API Allows Unrestricted Cross-Origin

Quick assessment

Affected
Apache Software Foundation Apache Helix REST
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.

Apache Apache Helix REST是美国Apache基金会的一个集群管理协调服务组件。 Apache Helix REST 2.0.0及之前版本存在输入验证错误漏洞，该漏洞源于REST API中CORS过滤器无条件返回Access-Control-Allow-Origin: *和Access-Control-Allow-Credentials: true，并反映任意Access-Control-Request-Method / Access-Control-Request-Headers值，

AI Predicted 6.5 Difficulty: Easy EPSS 0.27% · P19

Affected Version Matrix 1

VendorProduct Version RangeStatus
Apache Software Foundation Apache Helix REST ≤ 2.0.0 affected
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I. Basic Information for CVE-2026-57111

Vulnerability Information
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Vulnerability Title
Apache Helix REST: Permissive CORS Configuration in REST API Allows Unrestricted Cross-Origin
Source: CVE Program / CVE List V5
Vulnerability Description
Permissive Cross-Origin Resource Sharing (CORS) in the REST API (helix-rest, org.apache.helix.rest.server.filters.CORSFilter) in Apache Helix through 2.0.0 on all platforms allows a remote attacker controlling a web page visited by an authorized user to read responses from and issue cross-origin requests to administrative REST endpoints via a cross-origin request from an arbitrary origin, since the filter unconditionally returns Access-Control-Allow-Origin: * together with Access-Control-Allow-Credentials: true and reflects arbitrary Access-Control-Request-Method / Access-Control-Request-Headers values in preflight responses. Users are recommended to upgrade to version 2.0.1, which fixes this issue.
Source: CVE Program / CVE List V5
CVSS Information
N/A
Source: CVE Program / CVE List V5
Vulnerability Type
CWE-1385
Source: CVE Program / CVE List V5
Vulnerability Title
Apache Helix REST 输入验证错误漏洞
Source: CNNVD (China National Vulnerability Database)
Vulnerability Description
Apache Apache Helix REST是美国Apache基金会的一个集群管理协调服务组件。 Apache Helix REST 2.0.0及之前版本存在输入验证错误漏洞，该漏洞源于REST API中CORS过滤器无条件返回Access-Control-Allow-Origin: *和Access-Control-Allow-Credentials: true，并反映任意Access-Control-Request-Method / Access-Control-Request-Headers值，
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
Apache Software Foundation Apache Helix REST 0 ~ 2.0.0 -

II. Public POCs for CVE-2026-57111

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III. Intelligence Information for CVE-2026-57111

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Mailing List Discussions for CVE-2026-57111 (1)

IV. Related Vulnerabilities

Same vendor: Apache Software Foundation
Same weakness: CWE-1385

V. Comments for CVE-2026-57111

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