CVE-2022-39265
Mail settings' command parameter injection in mybb
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.
Attack profile
How easy it is to exploit
- Attack vector
- Network
- Complexity
- Low
- Privileges needed
- High
- User interaction
- None
What an attacker can affect
- Confidentiality
- High
- Integrity
- High
- Availability
- High
Exploit likelihood
What each source reports
CVE List Score used
Mail settings' command parameter injection in mybb
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.
- Record
CVE-2022-39265- CVSS 3.1
- 7.2 High
CVSS:3.1/AV:N/AC:L/PR:H/UI:N/S:U/C:H/I:H/A:H - Weakness
- CWE-74
- Updated
- 2026-11-02
EUVDEUVD-2022-41774
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.
- Record
EUVD-2022-41774- CVSS 3.1
- 7.2 High
CVSS:3.1/AV:N/AC:L/PR:H/UI:N/S:U/C:H/I:H/A:H - Updated
- 2026-11-02
NVD
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.
- Record
CVE-2022-39265- CVSS 3.1
- 7.2 High
CVSS:3.1/AV:N/AC:L/PR:H/UI:N/S:U/C:H/I:H/A:H - Weakness
- CWE-74, CWE-77
- Updated
- 2026-11-02
OSV
Mail settings' command parameter injection in mybb
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.
- Record
CVE-2022-39265- CVSS 3.1
- 7.2 High
CVSS:3.1/AV:N/AC:L/PR:H/UI:N/S:U/C:H/I:H/A:H - Weakness
- CWE-74
- Updated
- 2026-11-02
OSVBIT-mybb-2022-39265 No score
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.
- Record
BIT-mybb-2022-39265- Updated
- 2026-11-02
Affected products
Affected packages
| Package | Affected | Fixed |
|---|---|---|
mybbBitnami |
before 1.8.31 | 1.8.31 |
History
| Recorded | Changed | Sources |
|---|---|---|
| first indexed | CVE List, EUVD, NVD, OSV |
Dates are when Every CVE recorded each change. Upstream dates may differ.
In short
CVE-2022-39265 is a high vulnerability (CVSS 7.2) in Mybb, published October 6, 2022. No source lists public exploit code. EPSS puts the chance of exploitation in the next 30 days at 3.11%, the 87th percentile. Fixed in mybb 1.8.31.
References
github.com/mybb/mybb/security/advisories/GHSA-hxhm-rq9f-7xj7
mybb.com/versions/1.8.31
nvd.nist.gov/vuln/detail/CVE-2022-39265