The confirm add-on in SmartList 3.15 and earlier allows attackers to subscribe arbitrary e-mail addresses by using a valid cookie that specifies an address other than the address for which the cookie was assigned.
http://www.debian.org/security/2005/dsa-720
Source: Mitre, NVD
Published: 2005-05-03
Updated: 2008-09-10
Base Score: 7.5
Vector: CVSS2#AV:N/AC:L/Au:N/C:P/I:P/A:P
Severity: High
Vector: CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:H/A:N