Mk-Auth · Mk-Auth · CVE-2021-3005
**Name of the Vulnerable Software and Affected Versions**
MK-AUTH versions through 19.01 K4.9
**Description**
The issue allows remote attackers to obtain sensitive information, such as a CPF number, by modifying the `titulo` (also known as invoice number) value in the "central/recibo.php" URI.
**Recommendations**
For MK-AUTH versions through 19.01 K4.9, as a temporary workaround, consider restricting access to the "central/recibo.php" URI until a patch is available. Avoid using modified `titulo` values in this endpoint to minimize the risk of exploitation. At the moment, there is no information about a newer version that contains a fix for this vulnerability.