
CVE-2021-27889 – MyBB 1.8.25 - Chained Remote Command Execution
https://notcve.org/view.php?id=CVE-2021-27889
15 Mar 2021 — Cross-site Scripting (XSS) vulnerability in MyBB before 1.8.26 via Nested Auto URL when parsing messages. Una vulnerabilidad de tipo Cross-site Scripting (XSS) en MyBB versiones anteriores a 1.8.26 a través de Nested Auto URL cuando se analizan los mensajes • https://packetstorm.news/files/id/161908 • CWE-79: Improper Neutralization of Input During Web Page Generation ('Cross-site Scripting') •

CVE-2021-27279
https://notcve.org/view.php?id=CVE-2021-27279
22 Feb 2021 — MyBB before 1.8.25 allows stored XSS via nested [email] tags with MyCode (aka BBCode). MyBB versiones anteriores a 1.8.25, permite un ataque de tipo XSS almacenado por medio de etiquetas [correo electrónico] anidadas con MyCode (también se conoce como BBCode) • https://github.com/mybb/mybb/commit/cb781b49116bf5c4d8deca3e17498122b701677a • CWE-79: Improper Neutralization of Input During Web Page Generation ('Cross-site Scripting') •

CVE-2020-15139 – XSS in MyBB
https://notcve.org/view.php?id=CVE-2020-15139
10 Aug 2020 — In MyBB before version 1.8.24, the custom MyCode (BBCode) for the visual editor doesn't escape input properly when rendering HTML, resulting in a DOM-based XSS vulnerability. The weakness can be exploited by pointing a victim to a page where the visual editor is active (e.g. as a post or Private Message) and operates on a maliciously crafted MyCode message. This may occur on pages where message content is pre-filled using a GET/POST parameter, or on reply pages where a previously saved malicious message is ... • https://github.com/mybb/mybb/commit/37ad29dcd25489a37bdd89ebac761f22492558b0 • CWE-79: Improper Neutralization of Input During Web Page Generation ('Cross-site Scripting') •

CVE-2019-20225
https://notcve.org/view.php?id=CVE-2019-20225
02 Jan 2020 — MyBB before 1.8.22 allows an open redirect on login. MyBB versiones anteriores a la versión 1.8.22, permite un redireccionamiento abierto sobre el inicio de sesión. • https://blog.mybb.com/2019/12/30/mybb-1-8-22-released-security-maintenance-release • CWE-601: URL Redirection to Untrusted Site ('Open Redirect') •

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') •