CVE-2010-4626
The my_rand function in functions.php in MyBB (aka MyBulletinBoard) before 1.4.12 does not...
The my_rand function in functions.php in MyBB (aka MyBulletinBoard) before 1.4.12 does not properly use the PHP mt_rand function, which makes it easier for remote attackers to obtain access to an arbitrary account by requesting a reset of the account's password, and then conducting a brute-force attack.
Exploit likelihood
What each source reports
NVD Score used
The my_rand function in functions.php in MyBB (aka MyBulletinBoard) before 1.4.12 does not properly use the PHP mt_rand function, which makes it easier for remote attackers to obtain access to an arbitrary account by requesting a reset of the account's password, and then conducting a brute-force attack.
- Record
CVE-2010-4626- CVSS 2.0
- 5.1 Medium
AV:N/AC:H/Au:N/C:P/I:P/A:P - Weakness
- CWE-310
- Updated
- 2026-11-02
CVE List No score
The my_rand function in functions.php in MyBB (aka MyBulletinBoard) before 1.4.12 does not properly use the PHP mt_rand function, which makes it easier for remote attackers to obtain access to an arbitrary account by requesting a reset of the account's password, and then conducting a brute-force attack.
- Record
CVE-2010-4626- Updated
- 2026-11-02
EUVDEUVD-2010-4591 No score
The my_rand function in functions.php in MyBB (aka MyBulletinBoard) before 1.4.12 does not properly use the PHP mt_rand function, which makes it easier for remote attackers to obtain access to an arbitrary account by requesting a reset of the account's password, and then conducting a brute-force attack.
- Record
EUVD-2010-4591- Updated
- 2026-11-03
GitHub AdvisoriesGHSA-8h49-6g8c-82vj No score
The my_rand function in functions.php in MyBB (aka MyBulletinBoard) before 1.4.12 does not...
The my_rand function in functions.php in MyBB (aka MyBulletinBoard) before 1.4.12 does not properly use the PHP mt_rand function, which makes it easier for remote attackers to obtain access to an arbitrary account by requesting a reset of the account's password, and then conducting a brute-force attack.
- Record
GHSA-8h49-6g8c-82vj- Updated
- 2026-11-02
Affected products
History
| Recorded | Changed | Sources |
|---|---|---|
| aliases | EUVD | |
| first indexed | CVE List, GitHub Advisories, NVD |
Dates are when Every CVE recorded each change. Upstream dates may differ.
In short
CVE-2010-4626 is a medium vulnerability (CVSS 5.1) in Mybb, published December 30, 2010. No source lists public exploit code. EPSS puts the chance of exploitation in the next 30 days at 2.15%, the 82nd percentile. No source names a fixed version.
References
dev.mybboard.net/issues/843
blog.mybb.com/2010/04/13/mybb-1-4-12-released-security-maintenance-update
openwall.com/lists/oss-security/2010/10/08/7
exchange.xforce.ibmcloud.com/vulnerabilities/64516
nvd.nist.gov/vuln/detail/CVE-2010-4626
github.com/advisories/GHSA-8h49-6g8c-82vj