CVE-2008-6984

critical

Description

Plesk 8.6.0, when short mail login names (SHORTNAMES) are enabled, allows remote attackers to bypass authentication and send spam e-mail via a message with (1) a base64-encoded username that begins with a valid shortname, or (2) a username that matches a valid password, as demonstrated using (a) SMTP and qmail, and (b) Courier IMAP and POP3.

References

https://exchange.xforce.ibmcloud.com/vulnerabilities/44856

http://www.securitytracker.com/id?1020801

http://www.securityfocus.com/bid/30956

http://www.osvdb.org/51652

Details

Source: Mitre, NVD

Published: 2009-08-19

Updated: 2026-06-16

Risk Information

CVSS v2

Base Score: 5.8

Vector: CVSS2#AV:N/AC:M/Au:N/C:P/I:P/A:N

Severity: Medium

CVSS v3

Base Score: 9.8

Vector: CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H

Severity: Critical

EPSS

EPSS: 0.00243