Path Traversal in Mybb

CVE-2009-4449

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.

Vulnerability class: Path Traversal (Directory Traversal)

EPSS: 0.027 (84.4th percentile) — read the EPSS interpretation.

CVSS v3 metric

CVSS v3 base score 6.5 (Medium). Vector: CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:N/A:N.

Affected products

  • Mybb — versions 1.4.10
  • N/a — versions n/a

Weakness classification (CWE)

References

  • cve@mitre.org (VDB Entry, Third Party Advisory, vdb-entry, Broken Link, x_refsource_BID)
  • cve@mitre.org (mailing-list, x_refsource_MLIST, Mailing List)
  • cve@mitre.org (x_refsource_CONFIRM, Exploit, Broken Link)
  • cve@mitre.org (x_refsource_SECUNIA, Broken Link, Vendor Advisory, third-party-advisory)
  • cve@mitre.org (mailing-list, x_refsource_MLIST, Mailing List)
  • cve@mitre.org (x_refsource_CONFIRM, Broken Link)
  • cve@mitre.org (Permissions Required, vdb-entry, x_refsource_VUPEN, Vendor Advisory)
  • cve@mitre.org (mailing-list, x_refsource_MLIST, Mailing List)
  • cve@mitre.org (x_refsource_OSVDB, vdb-entry, Broken Link)
  • cve@mitre.org (x_refsource_CONFIRM, Release Notes)

Frequently asked questions

What is CVE-2009-4449?
CVE-2009-4449 is a medium-severity vulnerability in Mybb, classified under Path Traversal. CVSS score: 6.5/10. Published 2009-12-29.
How severe is CVE-2009-4449?
Medium severity. CVSS v3 base score is 6.5 out of 10.