The following table lists the changes that have been made to the
CVE-2025-48940 vulnerability over time.
Vulnerability history details can be useful for understanding the evolution
of a vulnerability, and for identifying the most recent changes that may
impact the vulnerability’s severity, exploitability, or other characteristics.
-
New CVE Received
by [email protected]Jun. 02, 2025
Action Type Old Value New Value Added Description MyBB is free and open source forum software. Prior to version 1.8.39, the upgrade component does not validate user input properly, which allows attackers to perform local file inclusion (LFI) via a specially crafted parameter value. In order to exploit the vulnerability, the installer must be unlocked (no `install/lock` file present) and the upgrade script must be accessible (by re-installing the forum via access to `install/index.php`; when the forum has not yet been installed; or the attacker is authenticated as a forum administrator). MyBB 1.8.39 resolves this issue. Added CVSS V3.1 AV:N/AC:L/PR:H/UI:N/S:U/C:H/I:H/A:H Added CWE CWE-22 Added Reference https://github.com/mybb/mybb/commit/6e6cfbd524d9101b51e1278ecf520479b64b0f00 Added Reference https://github.com/mybb/mybb/security/advisories/GHSA-q4jv-xwjx-37cp Added Reference https://mybb.com/versions/1.8.39