Moodle
CVE-2026-26045
HIGH
GHSA-ggxq-2mg9-8966
Severity by source
AV:N/AC:L/PR:H/UI:N/S:U/C:H/I:H/A:H
Primary rating from NVD · only source for this CVE.
CVSS VectorNVD
CVSS:3.1/AV:N/AC:L/PR:H/UI:N/S:U/C:H/I:H/A:H
Lifecycle Timeline
3DescriptionCVE.org
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.
AnalysisAI
Moodle's backup restore function fails to properly validate malicious backup files, allowing authenticated administrators to achieve remote code execution through crafted file processing. An attacker with restore privileges can exploit this code injection vulnerability to fully compromise the Moodle server. No patch is currently available.
Technical ContextAI
Classified as CWE-94 (Code Injection). Affects Moodle. 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.
RemediationAI
Monitor vendor advisories for a patch. Restrict network access to the affected service where possible.
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Same weakness CWE-94 – Code Injection
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External POC / Exploit Code
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