// For flags

CVE-2023-23923

Moodle: possible to set the preferred "start page" of other users

Severity Score

8.2
*CVSS v3.1

Exploit Likelihood

*EPSS

Affected Versions

*CPE

Public Exploits

0
*Multiple Sources

Exploited in Wild

-
*KEV

Decision

Attend
*SSVC
Descriptions

The vulnerability was found Moodle which exists due to insufficient limitations on the "start page" preference. A remote attacker can set that preference for another user. The vulnerability allows a remote attacker to gain unauthorized access to otherwise restricted functionality.

*Credits: Upstream acknowledges Paul Holden as the original reporter.
CVSS Scores
Attack Vector
Network
Attack Complexity
Low
Privileges Required
None
User Interaction
None
Scope
Unchanged
Confidentiality
High
Integrity
Low
Availability
None
Attack Vector
Network
Attack Complexity
Low
Authentication
None
Confidentiality
Complete
Integrity
Partial
Availability
None
* Common Vulnerability Scoring System
SSVC
  • Decision:Attend
Exploitation
None
Automatable
Yes
Tech. Impact
Partial
* Organization's Worst-case Scenario
Timeline
  • 2023-01-19 CVE Reserved
  • 2023-02-17 CVE Published
  • 2024-08-02 CVE Updated
  • 2025-03-30 EPSS Updated
  • ---------- Exploited in Wild
  • ---------- KEV Due Date
  • ---------- First Exploit
CWE
  • CWE-284: Improper Access Control
CAPEC
Affected Vendors, Products, and Versions
Vendor Product Version Other Status
Vendor Product Version Other Status <-- --> Vendor Product Version Other Status
Moodle
Search vendor "Moodle"
Moodle
Search vendor "Moodle" for product "Moodle"
>= 3.9.0 < 3.9.19
Search vendor "Moodle" for product "Moodle" and version " >= 3.9.0 < 3.9.19"
-
Affected
Moodle
Search vendor "Moodle"
Moodle
Search vendor "Moodle" for product "Moodle"
>= 3.11.0 < 3.11.12
Search vendor "Moodle" for product "Moodle" and version " >= 3.11.0 < 3.11.12"
-
Affected
Moodle
Search vendor "Moodle"
Moodle
Search vendor "Moodle" for product "Moodle"
>= 4.0.0 < 4.0.6
Search vendor "Moodle" for product "Moodle" and version " >= 4.0.0 < 4.0.6"
-
Affected
Moodle
Search vendor "Moodle"
Moodle
Search vendor "Moodle" for product "Moodle"
4.1.0
Search vendor "Moodle" for product "Moodle" and version "4.1.0"
-
Affected