UpHeron
All vulnerabilities

Servers and applications

CVE-2016-2156

calendar/externallib.php in Moodle through 2.6.11, 2.7.x before 2.7.13, 2.8.x before 2.8.11, 2.9.x before 2.9.5, and 3.0.x before 3.0.3 provides calendar-event data without considering whether an activity is hidden, which allows remote authenticated users to obtain sensitive information via a web-service request.

Severity
Medium 4.3
Published
22 May 2016
Last changed
17 Jun 2026
Added to UpHeron
1 Nov 2026
Exploit chance
1.7% in the next 30 daysHigher than 77% of CVEs. EPSS by FIRST, 11 Nov 2026
Weakness
Information exposure (CWE-200)
Attack
Over the network · Needs a user account · No user action needed
Attacker can
Read some data
CVSS vector
CVSS:3.0/AV:N/AC:L/PR:L/UI:N/S:U/C:L/I:N/A:N
Sources
NVD

Affected software

SoftwareAffected versions
MoodleServers and applications · cpe:a:moodle:moodle
  • Version 3.0.2
  • Version 3.0.1
  • Version 3.0.0
  • Version 2.9.4
All 33 release lines
  • Every version up to 2.6.11
  • Version 2.7.0
  • Version 2.7.1
  • Version 2.7.2
  • Version 2.7.3
  • Version 2.7.4
  • Version 2.7.5
  • Version 2.7.6
  • Version 2.7.7
  • Version 2.7.8
  • Version 2.7.9
  • Version 2.7.10
  • Version 2.7.11
  • Version 2.7.12
  • Version 2.8.0
  • Version 2.8.1
  • Version 2.8.2
  • Version 2.8.3
  • Version 2.8.4
  • Version 2.8.5
  • Version 2.8.6
  • Version 2.8.7
  • Version 2.8.8
  • Version 2.8.9
  • Version 2.8.10
  • Version 2.9.0
  • Version 2.9.1
  • Version 2.9.2
  • Version 2.9.3
  • Version 2.9.4
  • Version 3.0.0
  • Version 3.0.1
  • Version 3.0.2

References

  • NVD https://nvd.nist.gov/vuln/detail/CVE-2016-2156
  • CVE.org https://www.cve.org/CVERecord?id=CVE-2016-2156