CVE-2020-5231

Opencast users with ROLE_COURSE_ADMIN can create new users

MEDIUM
6.5
CVSS Score
Published: January 30, 2020 at 09:15 PM UTC
Updated: June 17, 2026 at 03:21 AM UTC
2 products affected across 2 vendorsOpencastOpencast

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Severity
MEDIUM6.5
Exploit prediction
EPSS 0.6%

Description

In Opencast before 7.6 and 8.1, users with the role ROLE_COURSE_ADMIN can use the user-utils endpoint to create new users not including the role ROLE_ADMIN. ROLE_COURSE_ADMIN is a non-standard role in Opencast which is referenced neither in the documentation nor in any code (except for tests) but only in the security configuration. From the name – implying an admin for a specific course – users would never expect that this role allows user creation. This issue is fixed in 7.6 and 8.1 which both ship a new default security configuration.

Affected

Our own answer: ranges merged, affected separated from platform-only, with confidence and review flags.

v < 7.68.0
Affected range stops below 7.6, so it looks safe — our inference, not a vendor statement
v < 7.6v < 8.1
Affected range stops below 7.6, so it looks safe — our inference, not a vendor statement
Affected range stops below 8.1, so it looks safe — our inference, not a vendor statement

Remediation

No guide yet

No remediation guidance has been written for this CVE yet. What the record does show:

CVSS

Attack Vector
NETWORK
Complexity
LOW
Privileges
LOW
User Interaction
NONE
Scope
UNCHANGED
Confidentiality
NONE
Integrity
HIGH
Availability
NONE
Vector?

Quick Info

StatusMODIFIED
CWE
CWE-285CWE-276

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