Vulnerability Details CVE-2026-57111
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.
Exploit prediction scoring system (EPSS) score
EPSS Score 0.003
EPSS Ranking 18.6%
CVSS Severity
CVSS v3 Score 7.5
References
Products affected by CVE-2026-57111
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cpe:2.3:a:apache:helix:-
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cpe:2.3:a:apache:helix:0.9.10
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cpe:2.3:a:apache:helix:0.9.9
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cpe:2.3:a:apache:helix:1.2.0
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cpe:2.3:a:apache:helix:1.3.0