CVE-2009-4449

Severity: medium (CVSS 6.5 v3.1)
Exploited in the wild: not listed in CISA KEV
EPSS: 2.7% probability of exploitation in the next 30 days
Public exploit or detection template: yes
Published: 2009-12-29 · updated 2026-06-16
Weakness: CWE-22

Description

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.

Affected products

mybb: 1.4.10

References

http://blog.mybboard.net/2009/12/29/mybb-1-4-11-released-minor-patch-security-update/
http://dev.mybboard.net/issues/617
http://dev.mybboard.net/projects/mybb/repository/revisions/4663/diff/branches/1.4-stable/admin/modules/user/users.php
http://dev.mybboard.net/projects/mybb/repository/revisions/4663/diff/branches/1.4-stable/usercp.php
http://openwall.com/lists/oss-security/2010/10/08/7
http://openwall.com/lists/oss-security/2010/10/11/8
http://openwall.com/lists/oss-security/2010/12/06/2
http://osvdb.org/61359
http://secunia.com/advisories/37906
http://www.securityfocus.com/bid/37489
http://www.vupen.com/english/advisories/2009/3651
http://blog.mybboard.net/2009/12/29/mybb-1-4-11-released-minor-patch-security-update/

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