cpe:2.3:a:mybb:mybb:1.2.5:*:*:*:*:*:*:*
MyBB is a free and open source forum software. Custom MyCode (BBCode) for the visual editor (_SCEditor_) doesn't escape input properly when rendering HTML, resulting in a DOM-based XSS vulnerability. This 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. The impact is be mitigated when: 1. the visual editor is disabled globally (_Admin CP → Configuration → Settings → Clickable Smilies and BB Code: [Clickable MyCode Editor](https://github.com/mybb/mybb/blob/mybb_1836/install/resources/settings.xml#L2087-L2094)_ is set to _Off_), or 2. the visual editor is disabled for individual user accounts (_User CP → Your Profile → Edit Options_: _Show the MyCode formatting options on the posting pages_ checkbox is not checked). MyBB 1.8.37 resolves this issue with the commit `6dcaf0b4d`. Users are advised to upgrade. Users unable to upgrade may mitigate the impact without upgrading MyBB by changing the following setting (_Admin CP → Configuration → Settings_): - _Clickable Smilies and BB Code → [Clickable MyCode Editor](https://github.com/mybb/mybb/blob/mybb_1836/install/resources/settings.xml#L2087-L2094)_: _Off_. Similarly, individual MyBB forum users are able to disable the visual editor by diabling the account option (_User CP → Your Profile → Edit Options_) _Show the MyCode formatting options on the posting pages_.
Max CVSS
7.5
EPSS Score
0.05%
Published
2023-11-06
Updated
2024-02-29
MyBB before 1.8.36 allows Code Injection by users with certain high privileges. Templates in Admin CP intentionally use eval, and there was some validation of the input to eval, but type juggling interfered with this when using PCRE within PHP.
Max CVSS
7.2
EPSS Score
0.09%
Published
2023-08-29
Updated
2023-09-11
MyBB before 1.8.33 allows Directory Traversal. The Admin CP Languages module allows remote authenticated users, with high privileges, to achieve local file inclusion and execution.
Max CVSS
7.2
EPSS Score
0.17%
Published
2023-01-03
Updated
2023-01-10
MyBB is a free and open source forum software. The _Mail Settings_ ? Additional Parameters for PHP's mail() function mail_parameters setting value, in connection with the configured mail program's options and behavior, may allow access to sensitive information and Remote Code Execution (RCE). The vulnerable module requires Admin CP access with the `_Can manage settings?_` permission and may depend on configured file permissions. MyBB 1.8.31 resolves this issue with the commit `0cd318136a`. Users are advised to upgrade. There are no known workarounds for this vulnerability.
Max CVSS
7.2
EPSS Score
0.40%
Published
2022-10-06
Updated
2023-03-01

CVE-2022-24734

Public exploit
MyBB is a free and open source forum software. In affected versions 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 on _Change Settings_ pages. This results in a Remote Code Execution (RCE) vulnerability. The vulnerable module requires Admin CP access with the `Can manage settings?` permission. MyBB's Settings module, which allows administrators to add, edit, and delete non-default settings, stores setting data in an options code string ($options_code; mybb_settings.optionscode database column) that identifies the setting type and its options, separated by a new line character (\n). In MyBB 1.2.0, support for setting type php was added, for which the remaining part of the options code is PHP code executed on Change Settings pages (reserved for plugins and internal use). MyBB 1.8.30 resolves this issue. There are no known workarounds.
Max CVSS
7.2
EPSS Score
30.59%
Published
2022-03-09
Updated
2022-09-30
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.
Max CVSS
7.2
EPSS Score
0.18%
Published
2021-11-04
Updated
2021-11-05
SQL Injection vulnerability in MyBB before 1.8.26 via User Groups. (issue 3 of 3).
Max CVSS
7.2
EPSS Score
0.09%
Published
2021-03-15
Updated
2021-03-16
SQL Injection vulnerability in MyBB before 1.8.26 via the Copy Forum feature in Forum Management. (issue 2 of 3).
Max CVSS
7.2
EPSS Score
0.09%
Published
2021-03-15
Updated
2021-03-16
SQL Injection vulnerability in MyBB before 1.8.26 via poll vote count. (issue 1 of 3).
Max CVSS
8.8
EPSS Score
0.16%
Published
2021-03-15
Updated
2021-03-23
SQL Injection vulnerablity in MyBB before 1.8.26 via theme properties included in theme XML files.
Max CVSS
8.8
EPSS Score
0.24%
Published
2021-03-15
Updated
2021-09-21
Installer RCE on settings file write in MyBB before 1.8.22.
Max CVSS
9.8
EPSS Score
0.09%
Published
2023-09-01
Updated
2023-09-07
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.
Max CVSS
8.8
EPSS Score
0.08%
Published
2020-08-10
Updated
2020-08-13
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.
Max CVSS
7.2
EPSS Score
0.09%
Published
2019-06-15
Updated
2019-06-17
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.
Max CVSS
8.7
EPSS Score
0.07%
Published
2019-06-15
Updated
2019-06-20
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.
Max CVSS
7.2
EPSS Score
0.22%
Published
2018-06-26
Updated
2019-10-03
The installer in MyBB before 1.8.13 allows remote attackers to execute arbitrary code by writing to the configuration file.
Max CVSS
9.8
EPSS Score
4.57%
Published
2017-11-10
Updated
2019-10-03
MyBB before 1.8.11 allows remote attackers to bypass an SSRF protection mechanism.
Max CVSS
7.7
EPSS Score
0.36%
Published
2017-04-06
Updated
2017-04-13
MyBB (aka MyBulletinBoard) before 1.8.8 and MyBB Merge System before 1.8.8 allow remote attackers to have unspecified impact via vectors related to "loose comparison false positives."
Max CVSS
9.8
EPSS Score
0.61%
Published
2017-01-31
Updated
2017-02-05
MyBB (aka MyBulletinBoard) before 1.8.8 on Windows and MyBB Merge System before 1.8.8 on Windows might allow remote attackers to obtain sensitive information from ACP backups via vectors involving a short name.
Max CVSS
7.5
EPSS Score
0.27%
Published
2017-01-31
Updated
2017-02-05
The fetch_remote_file function in MyBB (aka MyBulletinBoard) before 1.8.8 and MyBB Merge System before 1.8.8 allows remote attackers to conduct server-side request forgery (SSRF) attacks via unspecified vectors.
Max CVSS
7.4
EPSS Score
0.22%
Published
2017-01-31
Updated
2017-02-05
SQL injection vulnerability in the users data handler in MyBB (aka MyBulletinBoard) before 1.8.8 and MyBB Merge System before 1.8.8 allows remote attackers to execute arbitrary SQL commands via unspecified vectors.
Max CVSS
9.8
EPSS Score
0.20%
Published
2017-01-31
Updated
2017-02-05
MyBB (aka MyBulletinBoard) before 1.8.8 on Windows and MyBB Merge System before 1.8.8 on Windows allow remote attackers to overwrite arbitrary CSS files via vectors related to "style import."
Max CVSS
7.5
EPSS Score
0.33%
Published
2017-01-31
Updated
2017-02-05
MyBB (aka MyBulletinBoard) before 1.8.7 and MyBB Merge System before 1.8.7 allow remote attackers to obtain sensitive information by leveraging missing directory listing protection in upload directories.
Max CVSS
7.5
EPSS Score
0.27%
Published
2017-01-31
Updated
2017-02-05
MyBB (aka MyBulletinBoard) before 1.8.7 and MyBB Merge System before 1.8.7 allow attackers to have unspecified impact via vectors related to low adminsid and sid entropy.
Max CVSS
9.8
EPSS Score
0.48%
Published
2017-01-31
Updated
2017-02-05
MyBB (aka MyBulletinBoard) before 1.8.7 and MyBB Merge System before 1.8.7 might allow remote attackers to obtain sensitive database information via vectors involving templates.
Max CVSS
7.5
EPSS Score
0.27%
Published
2017-01-31
Updated
2017-02-05
42 vulnerabilities found
1 2
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