High severity · published Feb 21, 2026
CVE-2026-26045
Moodle: moodle: improper validation in file restore functionality leading to remote code execution
7.2
CVSS
0.6%
EPSS
No
On KEV
Description
A flaw was identified in Moodle’s backup restore functionality where specially crafted backup files were not properly validated during processing. If a malicious backup file is restored, it could lead to unintended execution of server-side code. Since restore capabilities are typically available to privileged users, exploitation requires authenticated access. Successful exploitation could result in full compromise of the Moodle server.
CVSS vector
CVSS:3.1/AV:N/AC:L/PR:H/UI:N/S:U/C:H/I:H/A:H
Attack vector
Network
Complexity
Low
Privileges
High
User interaction
None
Confidentiality
High
Integrity
High
Availability
High
Scope
Unchanged
Exploitation
Is it being used?
Exploit prediction (EPSS)0.6% · higher than 51% of CVEs
Exploited in the wildNo evidence yet
CISA KEVNot listed
Ransomware campaign useNot known
Affected products
Which versions
MO
Moodle · Moodle
before 4.5.9; 5.0.0 before 5.0.5; 5.1.0 before 5.1.2 · source: NVD
References
NVD
https://nvd.nist.gov/vuln/detail/CVE-2026-26045
CVE.org
https://www.cve.org/CVERecord?id=CVE-2026-26045
Third Party Advisory
https://access.redhat.com/security/cve/CVE-2026-26045
Third Party Advisory
https://bugzilla.redhat.com/show_bug.cgi?id=2440901
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