Administrative endpoint access via permissive CORS headers
Published Jul 9, 2026 · Updated Jul 9, 2026
Permissive CORS in Apache Helix REST 2.0.0 and earlier allows remote attackers to read and invoke administrative REST endpoints. The CORSFilter unconditionally combines Access-Control-Allow-Origin: * with credential allowance and reflects arbitrary requested methods and headers in preflight responses. Exploitation requires an authorized user to visit an attacker-controlled page, which can then read responses and issue administrative requests with that user's browser context.
Summary
What happened
Permissive CORS in Apache Helix REST 2.0.0 and earlier allows remote attackers to read and invoke administrative REST endpoints. The CORSFilter unconditionally combines Access-Control-Allow-Origin: * with credential allowance and reflects arbitrary requested methods and headers in preflight responses. Exploitation requires an authorized user to visit an attacker-controlled page, which can then read responses and issue administrative requests with that user's browser context.
The record
- CVE
- CVE-2026-57111
- Published
- Jul 9, 2026
- Updated
- Jul 9, 2026
- Vendor
- The Apache Software Foundation
- Product
- Apache Helix REST
- Classifications
- CWE-1385, T1189
- Attack vector
- network
- Privileges
- unauthenticated
Timeline
How it unfolded
- Jul 9, 2026CVE publishedPublication date reported by the CVE source.
- Jul 9, 2026Record updatedLatest update available in the CVE record.
Exploitability
Present is not the same as exploitable
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Is a vulnerable build present?
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- Affected versionversion=0 <=2.0.0
What conditions does exploitation require?
What is affected?
Published CVSS scores
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Attacks
What attackers are doing with it
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Public exploit references
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Technologies
Your stack
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Your stack
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