CVE-2009-4449

Directory traversal vulnerability in MyBB (aka MyBulletinBoard) 1.4.10, and possibly earlier...

6.5 Medium

Directory traversal vulnerability in MyBB (aka MyBulletinBoard) 1.4.10, and possibly earlier versions, when changing the user avatar from the gallery, allows remote authenticated users to determine the existence of files via directory traversal sequences in the avatar and possibly the gallery parameters, related to (1) admin/modules/user/users.php and (2) usercp.php.

Attack profile

How easy it is to exploit

Attack vector: Network
Complexity: Low
Privileges needed: Low
User interaction: None

What an attacker can affect

Confidentiality: High
Integrity: None
Availability: None

Exploit likelihood

2.70%Up 0.9 points since Feb 4, 2022

What each source reports

NVD Score used 6.5

Record: CVE-2009-4449
CVSS 3.1: 6.5 MediumCVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:N/A:N
CVSS 2.0: 6.3 MediumAV:N/AC:M/Au:S/C:C/I:N/A:N
Weakness: CWE-22
Updated: 2026-11-02

CVE List No score

Record: CVE-2009-4449
Updated: 2026-11-02

EUVDEUVD-2009-4416 No score

Record: EUVD-2009-4416
Updated: 2026-11-03

GitHub AdvisoriesGHSA-84hh-rjph-rr29 6.5

Directory traversal vulnerability in MyBB (aka MyBulletinBoard) 1.4.10, and possibly earlier...

Record: GHSA-84hh-rjph-rr29
CVSS 3.1: 6.5 MediumCVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:N/A:N
Weakness: CWE-22
Updated: 2026-11-02

Affected products

mybb

History

History
Recorded	Changed	Sources
Nov 3, 2026	aliases	EUVD
Nov 2, 2026	first indexed	CVE List, GitHub Advisories, NVD

Dates are when Every CVE recorded each change. Upstream dates may differ.

In short

CVE-2009-4449 is a medium vulnerability (CVSS 6.5) in Mybb, published December 29, 2009. No source lists public exploit code. EPSS puts the chance of exploitation in the next 30 days at 2.70%, the 86th percentile. No source names a fixed version.

References

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