Cyberark · Cyberark Identity · CVE-2022-22700
**Name of the Vulnerable Software and Affected Versions**
CyberArk Identity versions up to and including 22.1
**Description**
The issue exposes the response header `X-CFY-TX-TM` in the 'StartAuthentication' resource. In certain configurations, this response header contains different, predictable value ranges which can be used to determine whether a user exists in the tenant.
**Recommendations**
For versions up to and including 22.1, consider restricting access to the 'StartAuthentication' resource to minimize the risk of exploitation. As a temporary workaround, avoid relying on the `X-CFY-TX-TM` response header for authentication purposes until a patch is available.