
CVE-2019-12831
https://notcve.org/view.php?id=CVE-2019-12831
15 Jun 2019 — In MyBB before 1.8.21, an attacker can abuse a default behavior of MySQL on many systems (that leads to truncation of strings that are too long for a database column) to create a PHP shell in the cache directory of a targeted forum via a crafted XML import, as demonstrated by truncation of aaaaaaaaaaaaaaaaaaaaaaaaaa.php.css to aaaaaaaaaaaaaaaaaaaaaaaaaa.php with a 30-character limit, aka theme import stylesheet name RCE. En MyBB anterior a versión 1.8.21, un atacante puede abusar de un comportamiento por de... • https://blog.mybb.com/2019/06/10/mybb-1-8-21-released-security-maintenance-release • CWE-20: Improper Input Validation •

CVE-2019-12830
https://notcve.org/view.php?id=CVE-2019-12830
15 Jun 2019 — In MyBB before 1.8.21, an attacker can exploit a parsing flaw in the Private Message / Post renderer that leads to [video] BBCode persistent XSS to take over any forum account, aka a nested video MyCode issue. En MyBB anterior a 1.8.21, un atacante puede aprovechar un fallo de análisis en el renderizador de Publicación y Mensaje Privado que conlleva a un ataque XSS persistente de BBCode de [video] para controlar cualquier cuenta del foro, también se conoce como un problema de video anidado de MyCode. • https://blog.mybb.com/2019/06/10/mybb-1-8-21-released-security-maintenance-release • CWE-79: Improper Neutralization of Input During Web Page Generation ('Cross-site Scripting') •

CVE-2018-19202
https://notcve.org/view.php?id=CVE-2018-19202
11 Apr 2019 — A reflected XSS vulnerability in index.php in MyBB 1.8.x through 1.8.19 allows remote attackers to inject JavaScript via the 'upsetting[bburl]' parameter. Una vulnerabilidad de tipo XSS reflejada en el archivo index.php en MyBB versión 1.8.x hasta la 1.8.19, permite a atacantes remotos inyectar JavaScript por medio del parámetro 'upsetting[bburl]'. • https://blog.mybb.com • CWE-79: Improper Neutralization of Input During Web Page Generation ('Cross-site Scripting') •

CVE-2018-19201
https://notcve.org/view.php?id=CVE-2018-19201
29 Mar 2019 — A reflected XSS vulnerability in the ModCP Profile Editor in MyBB before 1.8.20 allows remote attackers to inject JavaScript via the 'username' parameter. Una vulnerabilidad de XSS reflejado en el editor "ModCP Profile", en versiones anteriores a la 1.8.20, permite a los atacantes remotos inyectar código JavaScript en el parámetro "username". • https://blog.mybb.com/2019/02/27/mybb-1-8-20-released-security-maintenance-release • CWE-79: Improper Neutralization of Input During Web Page Generation ('Cross-site Scripting') •

CVE-2018-17128 – MyBB Visual Editor 1.8.18 - Cross-Site Scripting
https://notcve.org/view.php?id=CVE-2018-17128
17 Sep 2018 — A Persistent XSS issue was discovered in the Visual Editor in MyBB before 1.8.19 via a Video MyCode. Se ha descubierto un problema de Cross-Site Scripting (XSS) persistente en Visual Editor en MyBB en versiones anteriores a la 1.8.19 mediante Video MyCode. MyBB Visual Editor versions 1.8.18 and below suffer from a cross site scripting vulnerability. • https://packetstorm.news/files/id/149469 • CWE-79: Improper Neutralization of Input During Web Page Generation ('Cross-site Scripting') •

CVE-2018-15596 – MyBB 1.8.17 - Cross-Site Scripting
https://notcve.org/view.php?id=CVE-2018-15596
28 Aug 2018 — An issue was discovered in inc/class_feedgeneration.php in MyBB 1.8.17. On the forum RSS Syndication page, one can generate a URL such as http://localhost/syndication.php?fid=&type=atom1.0&limit=15. The thread titles (within title elements of the generated XML documents) aren't sanitized, leading to XSS. Se ha descubierto un problema en inc/class_feedgeneration.php en MyBB 1.8.17. • https://packetstorm.news/files/id/149316 • CWE-79: Improper Neutralization of Input During Web Page Generation ('Cross-site Scripting') •

CVE-2018-1000503
https://notcve.org/view.php?id=CVE-2018-1000503
26 Jun 2018 — MyBB Group MyBB contains a Incorrect Access Control vulnerability in Private forums that can result in Users can view posts from private forums without having the password. This attack appear to be exploitable via Subscribe to a forum through IDOR. This vulnerability appears to have been fixed in 1.8.15. MyBB Group MyBB contiene una vulnerabilidad de control de acceso incorrecto en los foros privados que puede resultar en que los usuarios puedan ver foros privados sin tener la contraseña. Este ataque parece... • http://www.batterystapl.es/2018/03/local-file-inclusion-and-reading.html • CWE-269: Improper Privilege Management •

CVE-2018-1000502
https://notcve.org/view.php?id=CVE-2018-1000502
26 Jun 2018 — MyBB Group MyBB contains a File Inclusion vulnerability in Admin panel (Tools and Maintenance -> Task Manager -> Add New Task) that can result in Allows Local File Inclusion on modern PHP versions and Remote File Inclusion on ancient PHP versions. This attack appear to be exploitable via Must have access to admin panel. This vulnerability appears to have been fixed in 1.8.15. MyBB Group MyBB contiene una vulnerabilidad de inclusión de archivos en el panel de administrador (Tools and Maintenance -> Task Mana... • http://www.batterystapl.es/2018/03/local-file-inclusion-and-reading.html • CWE-829: Inclusion of Functionality from Untrusted Control Sphere •

CVE-2018-10678
https://notcve.org/view.php?id=CVE-2018-10678
13 May 2018 — MyBB 1.8.15, when accessed with Microsoft Edge, mishandles 'target="_blank" rel="noopener"' in A elements, which makes it easier for remote attackers to conduct redirection attacks. MyBB 1.8.15, cuando se accede a él mediante Microsoft Edge, gestiona de manera incorrecta 'target="_blank" rel="noopener"' en elementos A, lo que facilita que atacantes remotos lleven a cabo ataques de redirección. • https://github.com/hbranco/CVE-2018-10678 • CWE-601: URL Redirection to Untrusted Site ('Open Redirect') •

CVE-2018-7305
https://notcve.org/view.php?id=CVE-2018-7305
21 Feb 2018 — MyBB 1.8.14 is not checking for a valid CSRF token, leading to arbitrary deletion of user accounts. MyBB 1.8.14 no comprueba un token CSRF válido, lo que conduce al borrado arbitrario de cuentas de usuario. • https://websecnerd.blogspot.in/2018/02/mybb-forum-1_21.html • CWE-352: Cross-Site Request Forgery (CSRF) •