CRLF injection vulnerability in Yet another Bulletin Board (YaBB) 2.1 allows remote attackers to obtain administrative access via requests to (1) register.pl or (2) profile.pl that write CRLF sequences to a .vars file. NOTE: this can be leveraged to execute arbitrary code.

Directory traversal vulnerability in Yet another Bulletin Board (YaBB) 2.1 and earlier allows remote authenticated users to execute arbitrary Perl code via a .. (dot dot) in the userlanguage profile setting, which sets the userlanguage key of the member hash, and is propagated to the language variable in (1) HelpCentre.pl and (2) ICQPager.pl, (3) the use_lang variable in Subs.pl, and the actlang variable in (4) Post.pl and (5) InstantMessage.pl; as demonstrated by pointing userlanguage to the English folder, modifying English/HelpCentre.lng file to contain Perl statements, and then invoking the help action in YaBB.pl.

Cross-site scripting vulnerability in Yet Another Bulletin Board (YaBB) 1 Gold SP 1 and earlier allows remote attackers to execute arbitrary script and steal cookies via a message containing encoded Javascript in an IMG tag.

Cross-site scripting vulnerability in YaBB.cgi for Yet Another Bulletin Board (YaBB) 1 Gold SP1 and earlier allows remote attackers to execute arbitrary script as other web site visitors via script in the num parameter, which is not filtered in the resulting error message.

Cross-site scripting (XSS) vulnerability in index.php in Yet Another Bulletin Board (YaBB) 1.40 and 1.41 allows remote attackers to inject arbitrary web script or HTML via the password (passwrd) parameter.

Yet Another Bulletin Board (YaBB) 1.40 and 1.41 does not require a user to submit the correct password before changing it to a new password, which allows remote attackers to modify passwords by stealing the cookie of another user, modifying the expiretime setting, and submitting the change in a profile2 action to index.php.

Cross-site scripting (XSS) vulnerability in YaBB.pl in Yet Another Bulletin Board (YaBB) 1 Gold SP 1 allows remote attackers to inject arbitrary web script or HTML via the num parameter.

SSI.php in YaBB SE 1.5.2 allows remote attackers to execute arbitrary PHP code by modifying the sourcedir parameter to reference a URL on a remote web server that contains the code.

Cross-site scripting (XSS) vulnerabilities in Yet Another Bulletin Board (YaBB) 1.5.0 allow remote attackers to execute arbitrary script as other users and possibly steal authentication information via cookies by injecting arbitrary HTML or script into (1) news_icon of news_template.php, and (2) threadid and subject of index.html

SQL injection vulnerability in post.php for YaBB SE 1.5.4 and 1.5.5 allows remote attackers to obtain hashed passwords via the quote parameter.

Multiple SQL injection vulnerabilities in YaBB SE 1.5.4 through 1.5.5b allow remote attackers to execute arbitrary SQL via (1) the msg parameter in ModifyMessage.php or (2) the postid parameter in ModifyMessage.php.

Directory traversal vulnerability in ModifyMessage.php in YaBB SE 1.5.4 through 1.5.5b allows remote attackers to delete arbitrary files via a .. (dot dot) in the attachOld parameter.

YaBB SE 1.5.1 allows remote attackers to obtain sensitive information via a direct HTTP request to Admin.php, which reveals the full path in a PHP error message.

Cross-site scripting (XSS) vulnerability in YaBB 1 Gold(SP1.3) and YaBB SE 1.5.1 Final allows remote attackers to inject arbitrary web script via the background:url property in (1) glow or (2) shadow tags.

Post.pl in YaBB 1 Gold SP 1.2 allows remote attackers to modify records in the board's .txt file via carriage return characters in the subject field.

Unknown vulnerability in Adminedit.pl YaBB 1 Gold before 1.3.2 allows attackers to execute arbitrary code via settings.pl.

CRLF injection vulnerability in YaBB 1 Gold before 1.3.2 allows remote attackers to modify text file contents via the subject variable.

Cross-site scripting (XSS) vulnerability in YaBB.pl in YaBB 1 GOLD SP 1.3.2 allows remote attackers to inject arbitrary web script or HTML via a hex-encoded to parameter. NOTE: some sources say that the board parameter is affected, but this is incorrect.

Cross-site request forgery (CSRF) vulnerability in YaBB 1 GOLD SP 1.3.2 allows remote attackers to perform unauthorized actions as the administrative user via a link or IMG tag to YaBB.pl that specifies the desired action, id, and moda parameters.

SQL injection vulnerability in SSI.php in YaBB SE 1.5.4, 1.5.3, and possibly other versions before 1.5.5 allows remote attackers to execute arbitrary SQL commands via the ID_MEMBER parameter to the (1) recentTopics and (2) welcome functions.