All vulnerabilities

Servers and applications

CVE-2008-4929

MyBB (aka MyBulletinBoard) 1.4.2 uses insufficient randomness to compose filenames of uploaded files used as attachments, which makes it easier for remote attackers to read these files by guessing filenames.

Severity
High 7.5
Published
4 Nov 2008
Last changed
16 Jun 2026
Added to UpHeron
1 Nov 2026
Exploit chance
2.2% in the next 30 daysHigher than 83% of CVEs. EPSS by FIRST, 12 Nov 2026
Weakness
Insufficiently random values (CWE-330)
Attack
Over the network · No login needed · No user action needed
Attacker can
Read data
CVSS vector
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:N
Sources
NVD

Affected software

SoftwareAffected versions
MyBBServers and applications · cpe:a:mybb:mybb
  • Version 1.4.2

References

  • NVD https://nvd.nist.gov/vuln/detail/CVE-2008-4929
  • CVE.org https://www.cve.org/CVERecord?id=CVE-2008-4929