UpHeron
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Servers and applications

CVE-2015-5331

Moodle 2.9.x before 2.9.3 does not properly check the contact list before authorizing message transmission, which allows remote authenticated users to bypass intended access restrictions and conduct spam attacks via the messaging API.

Severity
Medium 4.3
Published
22 Feb 2016
Last changed
17 Jun 2026
Added to UpHeron
1 Nov 2026
Exploit chance
1.3% in the next 30 daysHigher than 70% of CVEs. EPSS by FIRST, 11 Nov 2026
Weakness
CWE-254
Attack
Over the network · Needs a user account · No user action needed
Attacker can
Change some data
CVSS vector
CVSS:3.0/AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:L/A:N
Sources
NVD

Affected software

SoftwareAffected versions
MoodleServers and applications · cpe:a:moodle:moodle
  • Version 2.9.0
  • Version 2.9.1
  • Version 2.9.2

References

  • NVD https://nvd.nist.gov/vuln/detail/CVE-2015-5331
  • CVE.org https://www.cve.org/CVERecord?id=CVE-2015-5331