Synopsis :

The remote web server hosts a PHP script that is affected by a cross-
site scripting vulnerability.

Description :

The version of the Pretty Link Lite plugin for WordPress installed on
the remote host fails to properly sanitize user-supplied input to the
'url' parameter of the 'pretty-bar.php' script before using it to
generate dynamic HTML output. An attacker may be able to leverage
this to inject arbitrary HTML and script code into a user's browser to
be executed within the security context of the affected site.

Note that the install is also likely to be affected by an additional
cross-site scripting issue as well as a SQL injection vulnerability,
although Nessus has not tested for those.

See also :

http://packetstormsecurity.org/files/107551/wordpressprettylink-xss.txt
http://www.nessus.org/u?8960c18d
http://wordpress.org/extend/plugins/pretty-link/changelog/

Solution :

Upgrade to Pretty Link Lite 1.5.4 or later

Risk factor :

Medium / CVSS Base Score : 4.3
(CVSS2#AV:N/AC:M/Au:N/C:N/I:P/A:N)
CVSS Temporal Score : 4.1
(CVSS2#E:F/RL:U/RC:ND)
Public Exploit Available : true