CVE-2022-39265

Name: CVE-2022-39265
Creator: NVD / NIST
Published: 2022-10-06T18:16:12.163+00:00
License: https://creativecommons.org/publicdomain/zero/1.0/

HIGHCVSS 7.2/10EPSS 2.15%

Last modified Jun 17, 2026

CVE-2022-39265 is a high-severity vulnerability rated 7.2/10 on the CVSS scale. 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). EPSS estimates a 2.15% chance of exploitation in the next 30 days.

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.

Metrics

CVSS 3.1

7.2/10

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

EPSS Probability

2.15%

79.8th percentile

Probability of exploitation in the next 30 days. Learn more

Weakness Enumeration

Affected Software

Vendor	Product	Versions
Mybb	Mybb	< 1.8.31

References

https://github.com/mybb/mybb/blob/mybb_1830/install/resources/settings.xml#L2331-L2338Exploit, Third Party Advisory
https://github.com/mybb/mybb/commit/0cd318136a10b029bb5c8a8f6dddf39d87519797Patch, Third Party Advisory
https://github.com/mybb/mybb/security/advisories/GHSA-hxhm-rq9f-7xj7Third Party Advisory
https://mybb.com/versions/1.8.31/Release Notes, Vendor Advisory
https://github.com/mybb/mybb/blob/mybb_1830/install/resources/settings.xml#L2331-L2338Exploit, Third Party Advisory
https://github.com/mybb/mybb/commit/0cd318136a10b029bb5c8a8f6dddf39d87519797Patch, Third Party Advisory
https://github.com/mybb/mybb/security/advisories/GHSA-hxhm-rq9f-7xj7Third Party Advisory
https://mybb.com/versions/1.8.31/Release Notes, Vendor Advisory

Timeline

Published: Oct 6, 2022
Last Modified: Jun 17, 2026
Status: Modified

Frequently Asked Questions

What is CVE-2022-39265?

How severe is CVE-2022-39265?

CVE-2022-39265 has a CVSS score of 7.2/10 (HIGH severity). The EPSS model estimates a 2.15% probability of exploitation in the next 30 days.

How do I fix CVE-2022-39265?

Check the vendor references and advisories linked above for patched versions and mitigation guidance. You can also run a Strix scan to test if your systems are affected.

Are you affected by CVE-2022-39265?

Run a free Strix scan to check your systems for this vulnerability.

Scan your code now

Source: NVD / NIST