UpHeron
All vulnerabilities

Servers and applications

CVE-2011-4305

message/refresh.php in Moodle 1.9.x before 1.9.14 allows remote authenticated users to cause a denial of service (infinite request loop) via a URL that specifies a zero wait time for message refreshing.

Severity
Medium 4.0
Published
11 Jul 2012
Last changed
16 Jun 2026
Added to UpHeron
1 Nov 2026
Exploit chance
1.9% in the next 30 daysHigher than 80% of CVEs. EPSS by FIRST, 12 Nov 2026
Weakness
CWE-189
Attack
Over the network · Needs a login
Attacker can
Slow it down
CVSS vector
AV:N/AC:L/Au:S/C:N/I:N/A:P
Sources
NVD

Affected software

SoftwareAffected versions
MoodleServers and applications · cpe:a:moodle:moodle
  • Version 1.9.13
  • Version 1.9.12
  • Version 1.9.11
  • Version 1.9.10
All 13 release lines
  • Version 1.9.1
  • Version 1.9.2
  • Version 1.9.3
  • Version 1.9.4
  • Version 1.9.5
  • Version 1.9.6
  • Version 1.9.7
  • Version 1.9.8
  • Version 1.9.9
  • Version 1.9.10
  • Version 1.9.11
  • Version 1.9.12
  • Version 1.9.13

References

  • NVD https://nvd.nist.gov/vuln/detail/CVE-2011-4305
  • CVE.org https://www.cve.org/CVERecord?id=CVE-2011-4305