MyBB before 1.8.29 allows Remote Code Injection by an admin with the "Can manage settings?" permission. The Admin CP's Settings management module does not validate setting types correctly on insertion and update, making it possible to add settings of supported type "php" with PHP code, executed on Change Settings pages.
CVSS Score
7.2
EPSS Score
0.007
Published
2021-11-04
MyBB before 1.8.28 allows stored XSS because the displayed Template Name value in the Admin CP's theme management is not escaped properly.
CVSS Score
5.4
EPSS Score
0.003
Published
2021-10-26
SQL Injection vulnerablity in MyBB before 1.8.26 via theme properties included in theme XML files.
CVSS Score
8.8
EPSS Score
0.057
Published
2021-03-15
SQL Injection vulnerability in MyBB before 1.8.26 via poll vote count. (issue 1 of 3).
CVSS Score
8.8
EPSS Score
0.002
Published
2021-03-15
SQL Injection vulnerability in MyBB before 1.8.26 via the Copy Forum feature in Forum Management. (issue 2 of 3).
CVSS Score
7.2
EPSS Score
0.003
Published
2021-03-15
SQL Injection vulnerability in MyBB before 1.8.26 via User Groups. (issue 3 of 3).
CVSS Score
7.2
EPSS Score
0.003
Published
2021-03-15
Cross-site Scripting vulnerability in MyBB before 1.8.26 via Custom moderator tools.
CVSS Score
6.1
EPSS Score
0.002
Published
2021-03-15
Cross-site Scripting (XSS) vulnerability in MyBB before 1.8.26 via Nested Auto URL when parsing messages.
CVSS Score
6.1
EPSS Score
0.022
Published
2021-03-15
MyBB before 1.8.25 allows stored XSS via nested [email] tags with MyCode (aka BBCode).
CVSS Score
5.4
EPSS Score
0.004
Published
2021-02-22
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 quoted. After upgrading MyBB to 1.8.24, make sure to update the version attribute in the `codebuttons` template for non-default themes to serve the latest version of the patched `jscripts/bbcodes_sceditor.js` file.
CVSS Score
8.8
EPSS Score
0.006
Published
2020-08-10