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Mybb

mybb

Vendor: Mybb • 140 CVEs

CVEs (140)

CVE
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PUBLISHED
CVSS
CVE-2019-12831
1Mybb
1Mybb
Jun 17, 2026
Jun 15, 2019
N/A· v4
7.2 HIGH· v3
6.5 MEDIUM· v2
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 tar...Show more
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.Show less
CVE-2019-12830
1Mybb
1Mybb
Jun 17, 2026
Jun 15, 2019
N/A· v4
8.7 HIGH· v3
3.5 LOW· v2
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.
CVE-2019-3579
1Mybb
1Mybb
Jun 17, 2026
Jun 6, 2019
N/A· v4
5.3 MEDIUM· v3
5.0 MEDIUM· v2
MyBB 1.8.19 allows remote attackers to obtain sensitive information because it discloses the username upon receiving a password-reset request that lacks the code parameter.
CVE-2019-3578
1Mybb
1Mybb
Jun 17, 2026
Jun 6, 2019
N/A· v4
6.1 MEDIUM· v3
4.3 MEDIUM· v2
MyBB 1.8.19 has XSS in the resetpassword function.
CVE-2018-19202
1Mybb
1Mybb
Nov 21, 2024
Apr 11, 2019
N/A· v4
6.1 MEDIUM· v3
4.3 MEDIUM· v2
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.
CVE-2018-19201
1Mybb
1Mybb
Nov 21, 2024
Mar 29, 2019
N/A· v4
6.1 MEDIUM· v3
4.3 MEDIUM· v2
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.
CVE-2018-17128
1Mybb
1Mybb
Nov 21, 2024
Sep 17, 2018
N/A· v4
5.4 MEDIUM· v3
3.5 LOW· v2
A Persistent XSS issue was discovered in the Visual Editor in MyBB before 1.8.19 via a Video MyCode.
CVE-2018-15596
1Mybb
1Mybb
Nov 21, 2024
Aug 28, 2018
N/A· v4
6.1 MEDIUM· v3
4.3 MEDIUM· v2
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 (wi...Show more
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.Show less
CVE-2018-1000503
1Mybb
1Mybb
Nov 21, 2024
Jun 26, 2018
N/A· v4
4.3 MEDIUM· v3
4.0 MEDIUM· v2
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 Subscr...Show more
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.Show less
CVE-2018-1000502
1Mybb
1Mybb
Nov 21, 2024
Jun 26, 2018
N/A· v4
7.2 HIGH· v3
6.5 MEDIUM· v2
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 Inclusi...Show more
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.Show less
CVE-2018-10678
1Mybb
1Mybb
Nov 21, 2024
May 13, 2018
N/A· v4
6.1 MEDIUM· v3
5.8 MEDIUM· v2
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.
CVE-2018-7305
1Mybb
1Mybb
Jun 17, 2026
Feb 21, 2018
N/A· v4
4.9 MEDIUM· v3
4.0 MEDIUM· v2
MyBB 1.8.14 is not checking for a valid CSRF token, leading to arbitrary deletion of user accounts.
CVE-2018-6844
1Mybb
1Mybb
Jun 17, 2026
Feb 8, 2018
N/A· v4
5.4 MEDIUM· v3
3.5 LOW· v2
MyBB 1.8.14 has XSS via the Title or Description field on the Edit Forum screen.
CVE-2017-16781
1Mybb
1Mybb
May 13, 2026
Nov 10, 2017
N/A· v4
5.4 MEDIUM· v3
3.5 LOW· v2
The installer in MyBB before 1.8.13 has XSS.
CVE-2017-16780
1Mybb
1Mybb
May 13, 2026
Nov 10, 2017
N/A· v4
9.8 CRITICAL· v3
7.5 HIGH· v2
The installer in MyBB before 1.8.13 allows remote attackers to execute arbitrary code by writing to the configuration file.
CVE-2017-8104
1Mybb
1Mybb
May 13, 2026
Apr 24, 2017
N/A· v4
5.3 MEDIUM· v3
5.0 MEDIUM· v2
In MyBB before 1.8.11, the smilie module allows Directory Traversal via the pathfolder parameter.
CVE-2017-8103
1Mybb
1Mybb
May 13, 2026
Apr 24, 2017
N/A· v4
6.1 MEDIUM· v3
4.3 MEDIUM· v2
In MyBB before 1.8.11, the Email MyCode component allows XSS, as demonstrated by an onmouseover event.
CVE-2017-7566
1Mybb
1Mybb
May 13, 2026
Apr 6, 2017
N/A· v4
7.7 HIGH· v3
4.0 MEDIUM· v2
MyBB before 1.8.11 allows remote attackers to bypass an SSRF protection mechanism.
CVE-2016-9421
1Mybb
2Merge System
Mybb
May 13, 2026
Jan 31, 2017
N/A· v4
6.1 MEDIUM· v3
4.3 MEDIUM· v2
Cross-site scripting (XSS) vulnerability in the Users module in the Admin control panel in MyBB (aka MyBulletinBoard) before 1.8.8 and MyBB Merge System before 1.8.8 might allow remote attackers to inject arbitrary web s...Show more
Cross-site scripting (XSS) vulnerability in the Users module in the Admin control panel in MyBB (aka MyBulletinBoard) before 1.8.8 and MyBB Merge System before 1.8.8 might allow remote attackers to inject arbitrary web script or HTML via unspecified vectors.Show less
CVE-2016-9420
1Mybb
2Merge System
Mybb
May 13, 2026
Jan 31, 2017
N/A· v4
9.8 CRITICAL· v3
7.5 HIGH· v2
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."