UpHeron
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Servers and applications

CVE-2018-1136

An issue was discovered in Moodle 3.x. An authenticated user is allowed to add HTML blocks containing scripts to their Dashboard; this is normally not a security issue because a personal dashboard is visible to this user only. Through this security vulnerability, users can move such a block to other pages where they can be viewed by other users.

Severity
Medium 4.3
Published
25 May 2018
Last changed
17 Jun 2026
Added to UpHeron
1 Nov 2026
Exploit chance
1% in the next 30 daysHigher than 64% of CVEs. EPSS by FIRST, 10 Nov 2026
Weakness
Cross-site scripting (CWE-79)
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
  • From 3.1.0 up to 3.1.11
  • From 3.2.0 up to 3.2.8
  • From 3.3.0 up to 3.3.5
  • From 3.4.0 up to 3.4.2

References

  • NVD https://nvd.nist.gov/vuln/detail/CVE-2018-1136
  • CVE.org https://www.cve.org/CVERecord?id=CVE-2018-1136