CVE-2023-5539
Moodle: authenticated remote code execution risk in lesson
HIGH
8.8
CVSS Score
Published: November 9, 2023 at 07:11 PM UTC
Updated: June 17, 2026 at 06:48 AM UTC
3 products affected across 2 vendorsFedoraMoodleExtra Packages for Enterprise Linux
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Severity
HIGH8.8
Exploit prediction
EPSS 2%
SSVC
No known exploit
Description
A remote code execution risk was identified in the Lesson activity. By default this was only available to teachers and managers.
Affected
Our own answer: ranges merged, affected separated from platform-only, with confidence and review flags.
95%
v < 3.9.243.11.0 ≤ v < 3.11.174.0.0 ≤ v < 4.0.114.1.0 ≤ v < 4.1.64.2.0 ≤ v < 4.2.33.11.04.0.04.1.04.2.0
Affected range stops below 3.11.17, so it looks safe — our inference, not a vendor statement
Affected range stops below 3.9.24, so it looks safe — our inference, not a vendor statement
Affected range stops below 4.0.11, so it looks safe — our inference, not a vendor statement
Affected range stops below 4.1.6, so it looks safe — our inference, not a vendor statement
Affected range stops below 4.2.3, so it looks safe — our inference, not a vendor statement
Remediation
No guide yetNo remediation guidance has been written for this CVE yet. What the record does show:
References (3)
Issue Trackingx_refsource_REDHATPatchThird Party Advisory
Source: [email protected]
https://bugzilla.redhat.com/show_bug.cgi?id=2243352SSVC — Action Prioritization
SSVCNo known exploitNot automatableTotal impact
SSVC signals action urgency (what to patch first), separate from CVSS which measures severity.
CVSS
- Attack Vector
- NETWORK
- Complexity
- LOW
- Privileges
- LOW
- User Interaction
- NONE
- Scope
- UNCHANGED
- Confidentiality
- HIGH
- Integrity
- HIGH
- Availability
- HIGH
Vector?
Quick Info
StatusMODIFIED
CWE
CWE-94
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