UpHeron
All vulnerabilities

Servers and applications

CVE-2011-4321

The password reset functionality in Joomla! 1.5.x through 1.5.24 uses weak random numbers, which makes it easier for remote attackers to change the passwords of arbitrary users via unspecified vectors.

Severity
Medium 5.0
Published
23 Nov 2011
Last changed
16 Jun 2026
Added to UpHeron
21 Oct 2026
Exploit chance
0.9% in the next 30 daysHigher than 61% of CVEs. EPSS by FIRST, 12 Nov 2026
Weakness
CWE-310
Attack
Over the network · No login needed
Attacker can
Change some data
CVSS vector
AV:N/AC:L/Au:N/C:N/I:P/A:N
Sources
NVD

Affected software

SoftwareAffected versions
Joomla!Servers and applications · cpe:a:joomla:joomla\!
  • Version 1.5.24
  • Version 1.5.23
  • Version 1.5.22
  • Version 1.5.21
All 26 release lines
  • Version 1.5.0
  • Version 1.5.1
  • Version 1.5.2
  • Version 1.5.3
  • Version 1.5.4
  • Version 1.5.5
  • Version 1.5.6
  • Version 1.5.7
  • Version 1.5.8
  • Version 1.5.9
  • Version 1.5.10
  • Version 1.5.11
  • Version 1.5.12
  • Version 1.5.13
  • Version 1.5.14
  • Version 1.5.15-rc
  • Version 1.5.15
  • Version 1.5.16
  • Version 1.5.17
  • Version 1.5.18
  • Version 1.5.19
  • Version 1.5.20
  • Version 1.5.21
  • Version 1.5.22
  • Version 1.5.23
  • Version 1.5.24

References

  • NVD https://nvd.nist.gov/vuln/detail/CVE-2011-4321
  • CVE.org https://www.cve.org/CVERecord?id=CVE-2011-4321