Search criteria
143 vulnerabilities by mybb
CVE-2011-10018 (GCVE-0-2011-10018)
Vulnerability from cvelistv5 – Published: 2025-08-13 20:35 – Updated: 2025-11-20 02:01
VLAI?
Summary
myBB version 1.6.4 was distributed with an unauthorized backdoor embedded in the source code. The backdoor allowed remote attackers to execute arbitrary PHP code by injecting payloads into a specially crafted collapsed cookie. This vulnerability was introduced during packaging and was not part of the intended application logic. Exploitation requires no authentication and results in full compromise of the web server under the context of the web application.
Severity ?
CWE
Assigner
References
| URL | Tags | ||||||||||||||||
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
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Impacted products
| Vendor | Product | Version | ||
|---|---|---|---|---|
| myBB Group | Forum Software |
Affected:
1.6.4
|
Credits
MyBB
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CVE-2025-48941 (GCVE-0-2025-48941)
Vulnerability from cvelistv5 – Published: 2025-06-02 15:58 – Updated: 2025-06-02 16:07
VLAI?
Summary
MyBB is free and open source forum software. Prior to version 1.8.39, the search component does not validate permissions correctly, which allows attackers to determine the existence of hidden (draft, unapproved, or soft-deleted) threads containing specified text in the title. The visibility state (`mybb_threads.visible` integer column) of threads is not validated in internal search queries, whose result is used to output a general success or failure of the search. While MyBB validates permissions when displaying the final search results, a search operation that internally produces at least one result outputs a redirect response (as a HTTP redirect, or a success message page with delayed redirect, depending on configuration). On the other hand, a search operation that internally produces no results outputs a corresponding message in the response without a redirect. This allows a user to determine whether threads matching title search parameters exist, including draft threads (`visible` with a value of `-2`), soft-deleted threads (`visible` with a value of `-1`), and unapproved threads (`visible` with a value of `0`); in addition to displaying generally visible threads (`visible` with a value of `1`). This vulnerability does not affect other layers of permissions. In order to exploit the vulnerability, the user must have access to the search functionality, and general access to forums containing the thread(s). The vulnerability does not expose the message content of posts. MyBB 1.8.39 resolves this issue.
Severity ?
5.3 (Medium)
CWE
- CWE-1230 - Exposure of Sensitive Information Through Metadata
Assigner
References
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CVE-2025-48940 (GCVE-0-2025-48940)
Vulnerability from cvelistv5 – Published: 2025-06-02 15:52 – Updated: 2025-06-02 16:06
VLAI?
Summary
MyBB is free and open source forum software. Prior to version 1.8.39, the upgrade component does not validate user input properly, which allows attackers to perform local file inclusion (LFI) via a specially crafted parameter value. In order to exploit the vulnerability, the installer must be unlocked (no `install/lock` file present) and the upgrade script must be accessible (by re-installing the forum via access to `install/index.php`; when the forum has not yet been installed; or the attacker is authenticated as a forum administrator). MyBB 1.8.39 resolves this issue.
Severity ?
7.2 (High)
CWE
- CWE-22 - Improper Limitation of a Pathname to a Restricted Directory ('Path Traversal')
Assigner
References
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CVE-2025-29459 (GCVE-0-2025-29459)
Vulnerability from cvelistv5 – Published: 2025-04-17 00:00 – Updated: 2025-04-23 13:02
VLAI?
Summary
An issue in MyBB 1.8.38 allows a remote attacker to obtain sensitive information via the Mail function. NOTE: the Supplier disputes this because of the allowed actions of Board administrators and because of SSRF mitigation.
Severity ?
7.6 (High)
CWE
- n/a
Assigner
References
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CVE-2025-29458 (GCVE-0-2025-29458)
Vulnerability from cvelistv5 – Published: 2025-04-17 00:00 – Updated: 2025-04-23 13:01
VLAI?
Summary
An issue in MyBB 1.8.38 allows a remote attacker to obtain sensitive information via the Change Avatar function. NOTE: the Supplier disputes this because of the allowed actions of Board administrators and because of SSRF mitigation.
Severity ?
7.6 (High)
CWE
- n/a
Assigner
References
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CVE-2025-29460 (GCVE-0-2025-29460)
Vulnerability from cvelistv5 – Published: 2025-04-17 00:00 – Updated: 2025-04-23 13:04
VLAI?
Summary
An issue in MyBB 1.8.38 allows a remote attacker to obtain sensitive information via the Add Mycode function. NOTE: the Supplier disputes this because of the allowed actions of Board administrators and because of SSRF mitigation.
Severity ?
7.6 (High)
CWE
- n/a
Assigner
References
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CVE-2025-29457 (GCVE-0-2025-29457)
Vulnerability from cvelistv5 – Published: 2025-04-17 00:00 – Updated: 2025-04-23 12:59
VLAI?
Summary
An issue in MyBB 1.8.38 allows a remote attacker to obtain sensitive information via the Import a Theme function. NOTE: the Supplier disputes this because of the allowed actions of Board administrators and because of SSRF mitigation.
Severity ?
7.6 (High)
CWE
- n/a
Assigner
References
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CVE-2024-52702 (GCVE-0-2024-52702)
Vulnerability from cvelistv5 – Published: 2024-11-20 00:00 – Updated: 2025-12-08 16:03
VLAI?
Summary
A stored cross-site scripting (XSS) vulnerability in the component install\index.php of MyBB v1.8.38 allows attackers to execute arbitrary web scripts or HTML via a crafted payload injected into the Website Name parameter. NOTE: this is disputed by the Supplier because Website Name can only be set by an administrator, who may use JavaScript if they wish.
Severity ?
6.1 (Medium)
CWE
- n/a
Assigner
References
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]
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CVE-2024-23335 (GCVE-0-2024-23335)
Vulnerability from cvelistv5 – Published: 2024-05-01 06:27 – Updated: 2024-08-01 22:59
VLAI?
Summary
MyBB is a free and open source forum software. The backup management module of the Admin CP may accept `.htaccess` as the name of the backup file to be deleted, which may expose the stored backup files over HTTP on Apache servers. MyBB 1.8.38 resolves this issue. Users are advised to upgrade. There are no known workarounds for this vulnerability
Severity ?
4.7 (Medium)
CWE
- CWE-20 - Improper Input Validation
Assigner
References
| URL | Tags | ||||||||||
|---|---|---|---|---|---|---|---|---|---|---|---|
|
|||||||||||
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"timestamp": "2024-07-03T14:28:16.476681Z",
"version": "2.0.3"
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}
],
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],
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"advisory": "GHSA-94xr-g4ww-j47r",
"discovery": "UNKNOWN"
},
"title": "Backups directory .htaccess deletion in. MyBB"
}
},
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CVE-2024-23336 (GCVE-0-2024-23336)
Vulnerability from cvelistv5 – Published: 2024-05-01 06:27 – Updated: 2024-08-01 22:59
VLAI?
Summary
MyBB is a free and open source forum software. The default list of disallowed remote hosts does not contain the `127.0.0.0/8` block, which may result in a Server-Side Request Forgery (SSRF) vulnerability. The Configuration File's _Disallowed Remote Addresses_ list (`$config['disallowed_remote_addresses']`) contains the address `127.0.0.1`, but does not include the complete block `127.0.0.0/8`. MyBB 1.8.38 resolves this issue in default installations. Administrators of installed boards should update the existing configuration (`inc/config.php`) to include all addresses blocked by default. Additionally, users are advised to verify that it includes any other IPv4 addresses resolving to the server and other internal resources. Users unable to upgrade may manually add 127.0.0.0/8' to their disallowed address list.
Severity ?
5 (Medium)
Assigner
References
| URL | Tags | |||||||||||||
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
|
||||||||||||||
{
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{
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{
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"cpe:2.3:a:mybb:mybb:*:*:*:*:*:*:*:*"
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"product": "mybb",
"vendor": "mybb",
"versions": [
{
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"status": "affected",
"version": "0",
"versionType": "custom"
}
]
}
],
"metrics": [
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}
],
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"timestamp": "2024-05-01T13:48:54.371730Z",
"version": "2.0.3"
},
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"title": "CISA ADP Vulnrichment"
},
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"dateUpdated": "2024-08-01T22:59:32.176Z",
"orgId": "af854a3a-2127-422b-91ae-364da2661108",
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"tags": [
"x_refsource_CONFIRM",
"x_transferred"
],
"url": "https://github.com/mybb/mybb/security/advisories/GHSA-qfrj-65mv-h75h"
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{
"name": "https://github.com/mybb/mybb/commit/d6a96019025de9149014e06b1df252e6122e5630",
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"tags": [
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],
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},
{
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"tags": [
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"x_transferred"
],
"url": "https://mybb.com/versions/1.8.38"
}
],
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}
],
"cna": {
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{
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"vendor": "mybb",
"versions": [
{
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]
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],
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"lang": "en",
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}
],
"metrics": [
{
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"attackComplexity": "HIGH",
"attackVector": "NETWORK",
"availabilityImpact": "LOW",
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CVE-2023-46251 (GCVE-0-2023-46251)
Vulnerability from cvelistv5 – Published: 2023-11-06 17:41 – Updated: 2024-09-04 19:32
VLAI?
Summary
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_.
Severity ?
7.5 (High)
CWE
- CWE-79 - Improper Neutralization of Input During Web Page Generation ('Cross-site Scripting')
Assigner
References
| URL | Tags | ||||||||||
|---|---|---|---|---|---|---|---|---|---|---|---|
|
|||||||||||
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CVE-2023-45556 (GCVE-0-2023-45556)
Vulnerability from cvelistv5 – Published: 2023-11-06 00:00 – Updated: 2024-09-05 14:16
VLAI?
Summary
Cross Site Scripting vulnerability in Mybb Mybb Forums v.1.8.33 allows a local attacker to execute arbitrary code via the theme Name parameter in the theme management component.
Severity ?
No CVSS data available.
CWE
- n/a
Assigner
References
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CVE-2020-22612 (GCVE-0-2020-22612)
Vulnerability from cvelistv5 – Published: 2023-09-01 00:00 – Updated: 2024-10-01 16:51
VLAI?
Summary
Installer RCE on settings file write in MyBB before 1.8.22.
Severity ?
No CVSS data available.
CWE
- n/a
Assigner
References
| URL | Tags | |
|---|---|---|
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CVE-2023-41362 (GCVE-0-2023-41362)
Vulnerability from cvelistv5 – Published: 2023-08-29 00:00 – Updated: 2024-10-01 20:41
VLAI?
Summary
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.
Severity ?
No CVSS data available.
CWE
- n/a
Assigner
References
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CVE-2023-28467 (GCVE-0-2023-28467)
Vulnerability from cvelistv5 – Published: 2023-05-22 00:00 – Updated: 2025-01-21 15:26
VLAI?
Summary
In MyBB before 1.8.34, there is XSS in the User CP module via the user email field.
Severity ?
No CVSS data available.
CWE
- n/a
Assigner
References
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CVE-2022-28354 (GCVE-0-2022-28354)
Vulnerability from cvelistv5 – Published: 2023-04-24 00:00 – Updated: 2025-02-04 16:40
VLAI?
Summary
In the Active Threads Plugin 1.3.0 for MyBB, the activethreads.php date parameter is vulnerable to XSS when setting a time period.
Severity ?
6.1 (Medium)
CWE
- n/a
Assigner
References
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CVE-2022-45867 (GCVE-0-2022-45867)
Vulnerability from cvelistv5 – Published: 2023-01-03 00:00 – Updated: 2025-04-10 15:24
VLAI?
Summary
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.
Severity ?
7.2 (High)
CWE
- n/a
Assigner
References
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CVE-2022-43709 (GCVE-0-2022-43709)
Vulnerability from cvelistv5 – Published: 2022-11-21 00:00 – Updated: 2025-04-29 14:12
VLAI?
Summary
MyBB 1.8.31 has a SQL injection vulnerability in the Admin CP's Users module allows remote authenticated users to modify the query string via direct user input or stored search filter settings.
Severity ?
4.9 (Medium)
CWE
- n/a
Assigner
References
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CVE-2022-43707 (GCVE-0-2022-43707)
Vulnerability from cvelistv5 – Published: 2022-11-21 00:00 – Updated: 2025-04-29 14:16
VLAI?
Summary
MyBB 1.8.31 has a Cross-site scripting (XSS) vulnerability in the visual MyCode editor (SCEditor) allows remote attackers to inject HTML via user input or stored data
Severity ?
6.1 (Medium)
CWE
- n/a
Assigner
References
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CVE-2022-43708 (GCVE-0-2022-43708)
Vulnerability from cvelistv5 – Published: 2022-11-21 00:00 – Updated: 2025-04-29 14:15
VLAI?
Summary
MyBB 1.8.31 has a (issue 2 of 2) cross-site scripting (XSS) vulnerabilities in the post Attachments interface allow attackers to inject HTML by persuading the user to upload a file with specially crafted name
Severity ?
6.1 (Medium)
CWE
- n/a
Assigner
References
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CVE-2022-39265 (GCVE-0-2022-39265)
Vulnerability from cvelistv5 – Published: 2022-10-06 00:00 – Updated: 2025-04-22 17:19
VLAI?
Summary
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.
Severity ?
7.2 (High)
CWE
- CWE-74 - Improper Neutralization of Special Elements in Output Used by a Downstream Component ('Injection')
Assigner
References
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CVE-2022-24734 (GCVE-0-2022-24734)
Vulnerability from cvelistv5 – Published: 2022-03-09 21:25 – Updated: 2025-04-22 18:19
VLAI?
Summary
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.
Severity ?
7.2 (High)
CWE
- CWE-94 - Improper Control of Generation of Code ('Code Injection')
Assigner
References
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CVE-2021-43281 (GCVE-0-2021-43281)
Vulnerability from cvelistv5 – Published: 2021-11-04 17:42 – Updated: 2024-08-04 03:55
VLAI?
Summary
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.
Severity ?
No CVSS data available.
CWE
- n/a
Assigner
References
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CVE-2021-41866 (GCVE-0-2021-41866)
Vulnerability from cvelistv5 – Published: 2021-10-26 21:25 – Updated: 2024-08-04 03:22
VLAI?
Summary
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.
Severity ?
No CVSS data available.
CWE
- n/a
Assigner
References
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CVE-2020-19049 (GCVE-0-2020-19049)
Vulnerability from cvelistv5 – Published: 2021-08-31 13:16 – Updated: 2024-08-04 14:08
VLAI?
Summary
Cross Site Scripting (XSS) in MyBB v1.8.20 allows remote attackers to inject arbitrary web script or HTML via the "Description" field found in the "Add New Forum" page by doing an authenticated POST HTTP request to '/Upload/admin/index.php?module=forum-management&action=add'.
Severity ?
No CVSS data available.
CWE
- n/a
Assigner
References
| URL | Tags | ||||
|---|---|---|---|---|---|
|
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CVE-2020-19048 (GCVE-0-2020-19048)
Vulnerability from cvelistv5 – Published: 2021-08-31 13:16 – Updated: 2024-08-04 14:08
VLAI?
Summary
Cross Site Scripting (XSS) in MyBB v1.8.20 allows remote attackers to inject arbitrary web script or HTML via the "Title" field found in the "Add New Forum" page by doing an authenticated POST HTTP request to '/Upload/admin/index.php?module=forum-management&action=add'.
Severity ?
No CVSS data available.
CWE
- n/a
Assigner
References
| URL | Tags | ||||
|---|---|---|---|---|---|
|
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CVE-2021-27949 (GCVE-0-2021-27949)
Vulnerability from cvelistv5 – Published: 2021-03-15 17:19 – Updated: 2024-08-03 21:33
VLAI?
Summary
Cross-site Scripting vulnerability in MyBB before 1.8.26 via Custom moderator tools.
Severity ?
No CVSS data available.
CWE
- n/a
Assigner
References
| URL | Tags | ||||
|---|---|---|---|---|---|
|
|||||
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CVE-2021-27948 (GCVE-0-2021-27948)
Vulnerability from cvelistv5 – Published: 2021-03-15 17:13 – Updated: 2024-08-03 21:33
VLAI?
Summary
SQL Injection vulnerability in MyBB before 1.8.26 via User Groups. (issue 3 of 3).
Severity ?
No CVSS data available.
CWE
- n/a
Assigner
References
| URL | Tags | ||||
|---|---|---|---|---|---|
|
|||||
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CVE-2021-27947 (GCVE-0-2021-27947)
Vulnerability from cvelistv5 – Published: 2021-03-15 17:10 – Updated: 2024-08-03 21:33
VLAI?
Summary
SQL Injection vulnerability in MyBB before 1.8.26 via the Copy Forum feature in Forum Management. (issue 2 of 3).
Severity ?
No CVSS data available.
CWE
- n/a
Assigner
References
| URL | Tags | ||||
|---|---|---|---|---|---|
|
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CVE-2021-27946 (GCVE-0-2021-27946)
Vulnerability from cvelistv5 – Published: 2021-03-15 17:08 – Updated: 2024-08-03 21:33
VLAI?
Summary
SQL Injection vulnerability in MyBB before 1.8.26 via poll vote count. (issue 1 of 3).
Severity ?
No CVSS data available.
CWE
- n/a
Assigner
References
| URL | Tags | |||||||
|---|---|---|---|---|---|---|---|---|
|
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"name": "https://github.com/mybb/mybb/security/advisories/GHSA-23m9-w75q-ph4p",
"refsource": "MISC",
"url": "https://github.com/mybb/mybb/security/advisories/GHSA-23m9-w75q-ph4p"
},
{
"name": "http://packetstormsecurity.com/files/161918/MyBB-1.8.25-SQL-Injection.html",
"refsource": "MISC",
"url": "http://packetstormsecurity.com/files/161918/MyBB-1.8.25-SQL-Injection.html"
}
]
}
}
}
},
"cveMetadata": {
"assignerOrgId": "8254265b-2729-46b6-b9e3-3dfca2d5bfca",
"assignerShortName": "mitre",
"cveId": "CVE-2021-27946",
"datePublished": "2021-03-15T17:08:09",
"dateReserved": "2021-03-04T00:00:00",
"dateUpdated": "2024-08-03T21:33:17.343Z",
"state": "PUBLISHED"
},
"dataType": "CVE_RECORD",
"dataVersion": "5.1"
}