CVE-2022-24734

Name: CVE-2022-24734
Creator: NVD / NIST
Published: 2022-03-09T22:15:09.363+00:00
License: https://creativecommons.org/publicdomain/zero/1.0/

HIGHCVSS 7.2/10EPSS 77.68%

Last modified Jun 17, 2026

CVE-2022-24734 is a high-severity vulnerability rated 7.2/10 on the CVSS scale. 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. EPSS estimates a 77.68% chance of exploitation in the next 30 days.

Description

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.

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

77.68%

99.5th percentile

Probability of exploitation in the next 30 days. Learn more

Weakness Enumeration

Affected Software

Vendor	Product	Versions
Mybb	Mybb	>= 1.2.0, < 1.8.30

References

http://packetstormsecurity.com/files/167082/MyBB-1.8.29-Remote-Code-Execution.htmlExploit, Third Party Advisory, VDB Entry
http://packetstormsecurity.com/files/167333/MyBB-Admin-Control-Remote-Code-Execution.htmlExploit, Third Party Advisory
https://github.com/mybb/mybb/commit/92012b9831b330714b9f9b4646a98784113489c1Patch, Third Party Advisory
https://github.com/mybb/mybb/security/advisories/GHSA-876v-gwgh-w57fPatch, Third Party Advisory
https://mybb.com/versions/1.8.30/Release Notes, Vendor Advisory
https://www.zerodayinitiative.com/advisories/ZDI-22-503/Third Party Advisory, VDB Entry, Vendor Advisory
http://packetstormsecurity.com/files/167082/MyBB-1.8.29-Remote-Code-Execution.htmlExploit, Third Party Advisory, VDB Entry
http://packetstormsecurity.com/files/167333/MyBB-Admin-Control-Remote-Code-Execution.htmlExploit, Third Party Advisory
https://github.com/mybb/mybb/commit/92012b9831b330714b9f9b4646a98784113489c1Patch, Third Party Advisory
https://github.com/mybb/mybb/security/advisories/GHSA-876v-gwgh-w57fPatch, Third Party Advisory
https://mybb.com/versions/1.8.30/Release Notes, Vendor Advisory
https://www.zerodayinitiative.com/advisories/ZDI-22-503/Third Party Advisory, VDB Entry, Vendor Advisory

Timeline

Published: Mar 9, 2022
Last Modified: Jun 17, 2026
Status: Modified

Frequently Asked Questions

What is CVE-2022-24734?

How severe is CVE-2022-24734?

CVE-2022-24734 has a CVSS score of 7.2/10 (HIGH severity). The EPSS model estimates a 77.68% probability of exploitation in the next 30 days.

How do I fix CVE-2022-24734?

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-2022-24734?

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

Scan your code now

Source: NVD / NIST