An issue was discovered in Zammad before 1.0.4, 1.1.x before 1.1.3, and 1.2.x before 1.2.1, caused by lack of a protection mechanism involving HTTP Access-Control headers. To exploit the vulnerability, an attacker can send cross-domain requests directly to the REST API for users with a valid session cookie and receive the result.
CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
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