A flaw was found in Moodle. The XML grade import feature lacks proper Cross-Site Request Forgery (CSRF) token validation. (CVE-2026-102588)
A vulnerability in Moodle's XML grade import feature allows unauthorized grade modification due to missing CSRF token validation. An attacker can exploit this by tricking an authenticated user with grade management permissions into visiting a malicious webpage, causing unauthorized grade changes.
AI Analysis
Technical Summary
CVE-2026-102588 describes a security flaw in Moodle where the XML grade import functionality does not properly validate Cross-Site Request Forgery (CSRF) tokens. This lack of validation enables a remote attacker to induce an authenticated user with grade management permissions to perform unauthorized requests, specifically setting or overwriting student grades without proper authorization.
Potential Impact
The vulnerability permits remote attackers to alter student grades without authorization by exploiting the absence of CSRF token validation in the grade import feature. This compromises the integrity of grade data but does not affect confidentiality or availability.
Mitigation Recommendations
Patch status is not yet confirmed — check the vendor advisory for current remediation guidance. Until an official fix is available, users should restrict access to grade management permissions and avoid visiting untrusted webpages while authenticated in Moodle.
A flaw was found in Moodle. The XML grade import feature lacks proper Cross-Site Request Forgery (CSRF) token validation. (CVE-2026-102588)
Description
A vulnerability in Moodle's XML grade import feature allows unauthorized grade modification due to missing CSRF token validation. An attacker can exploit this by tricking an authenticated user with grade management permissions into visiting a malicious webpage, causing unauthorized grade changes.
CVSS v3.1
Score 6.5medium
Weaknesses
AI-Powered Analysis
Machine-generated threat intelligence
Technical Analysis
CVE-2026-102588 describes a security flaw in Moodle where the XML grade import functionality does not properly validate Cross-Site Request Forgery (CSRF) tokens. This lack of validation enables a remote attacker to induce an authenticated user with grade management permissions to perform unauthorized requests, specifically setting or overwriting student grades without proper authorization.
Potential Impact
The vulnerability permits remote attackers to alter student grades without authorization by exploiting the absence of CSRF token validation in the grade import feature. This compromises the integrity of grade data but does not affect confidentiality or availability.
Mitigation Recommendations
Patch status is not yet confirmed — check the vendor advisory for current remediation guidance. Until an official fix is available, users should restrict access to grade management permissions and avoid visiting untrusted webpages while authenticated in Moodle.
Technical Details
- Gcve Source
- db.gcve.eu
- Osv Id
- GHSA-w3pq-x3mm-4hh9
- Osv Schema Version
- 1.4.0
- Aliases
- ["CVE-2026-102588"]
- Database Specific Severity
- MODERATE
- Cvss Version
- 3.1
- State
- PUBLISHED
Threat ID: 6abd30852a4e24523d3401e8
Added to database: 09/30/2026, 15:53:41 UTC
Last enriched: 09/30/2026, 16:08:36 UTC
Last updated: 10/01/2026, 05:08:50 UTC
Views: 6
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