CVE-2022-39265 - CVE House
Back to Database
Status published High CVE-2022-39265

Mail settings' command parameter injection in mybb

Vulnerability Description

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.

Impact Analysis

Refer to official advisory for detailed impact metrics.

Remediation

Ensure systems are updated to the latest vendor-supplied patch levels.

THREAT MONITOR

Am I Vulnerable?

Launch our assessment wizard to check if your infrastructure is exposed to • CVE-2022-39265

Credits & Attribution

No credits recorded in the NVD database.

References

More from mybb

View All →
CVE-2025-48941
MyBB may disclosure unviewable threads' titles in searches
Medium 5.3
CVE-2025-48940
MyBB's upgrade component vulnerable to local file inclusion
High 7.2
CVE-2024-23336
Incomplete disallowed remote addresses list in MyBB
Medium 5
CVE-2024-23335
Backups directory .htaccess deletion in. MyBB
Medium 4.7
CVE-2023-46251
Visual editor persistent Cross-site Scripting (XSS) in MyBB
High 7.5

Affected Vendor

Affected Software

mybb
Vulnerable Versions:
< 1.8.31

Timeline

Official Publish: October 6th, 2022
Last Modified: April 22nd, 2025
Added to House: July 21st, 2026

CVSS Vectors

V3: CVSS:3.1/AV:N/AC:L/PR:H/UI:N/S:U/C:H/I:H/A:H

Weaknesses (CWE)

CWE-74

MITRE ATT&CK TTPs

T1190 Exploit Public-Facing Application
Initial Access
T1059 Command and Scripting Interpreter
Execution
T1562 Impair Defenses
Defense Evasion
T1213 Data from Information Repositories
Collection