| Package | Affected versions | Patched versions |
|---|---|---|
| org.elasticsearch:elasticsearch | ≥ 6.4.0, < 6.4.3 | 6.4.3 |
| elasticsearch | ≥ 6.4.0, ≤ 6.4.2 |
Elasticsearch Security versions 6.4.0 to 6.4.2 contain an error in the way request headers are applied to requests when using the Active Directory, LDAP, Native, or File realms. A request may receive headers intended for another request if the same username is being authenticated concurrently; when used with run as, this can result in the request running as the incorrect user. This could allow a user to access information that they should not have access to.
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