CVE-2026-57111 Apache Helix REST: Permissive CORS Configuration in REST API Allows Unrestricted Cross-Origin
Permissive CORS settings in Apache Helix REST allow attackers to read data and modify state via cross-origin requests from malicious websites.
- Exploited in the wild
- Not known
- Login needed
- Not needed
- Attackable
- Over the internet
- Victim action needed
- Not needed
- Fix
- None listed
What is CVE-2026-57111?
CVE-2026-57111 is a high-severity vulnerability in Apache Helix REST, published on 9 Jul 2026. An attacker can exploit it over the internet without logging in, with no action from the victim.
Official 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.
Weakness: CWE-1385
Which versions are affected by CVE-2026-57111?
It affects 1 product.
Products include Apache Helix.
How do I fix CVE-2026-57111?
No fix has been published for CVE-2026-57111 yet. Limit exposure of the affected software until one is available.
Is CVE-2026-57111 being exploited?
There is no known exploitation of CVE-2026-57111 in the wild and no public exploit code.
Other vulnerabilities in Apache Helix REST
Sources
Also known as GHSA-2h97-jww5-mwvc.