Cross-site request forgery (CSRF) vulnerability in index.php in FlatNuke 2.6, and possibly 3, allows remote attackers to change the password and privilege level of arbitrary accounts via the user parameter and modified (1) regpass and (2) level parameters in a none_Login action, as demonstrated by using a Flash object to automatically make the request.

References

• https://nvd.nist.gov/vuln/detail/CVE-2007-5109
• https://exchange.xforce.ibmcloud.com/vulnerabilities/36763
• http://secunia.com/advisories/26957
• http://securityreason.com/securityalert/3176
• http://www.securityfocus.com/archive/1/480468/100/0/threaded
• http://www.securityfocus.com/bid/25817