What’s Vulnerable › Vulnerabilities

CVE-2026-102584: Moodle: missing capability check allows unauthorised grade penalty recalculation

• Severity: medium (CVSS 4.3 v3.1)
• Exploited in the wild: not listed in CISA KEV
• EPSS: 0.2% probability of exploitation in the next 30 days
• Public exploit or detection template: none known
• Published: 2026-09-30 · updated 2026-10-01
• Weakness: CWE-425

Description

A flaw was found in Moodle. Due to a missing capability check, a low-privileged authenticated user can trigger the recalculation of grade penalties without holding the required permissions. This issue allows unauthorized users to modify grade penalty records, potentially altering student assessment scores.

Affected products

• Moodle: from 5.0.0 before 5.0.9; from 5.1.0 before 5.1.6; from 5.2.0 before 5.2.2 — fixed in 5.0.9, 5.1.6, 5.2.2

How to fix

Upgrade to a fixed version: Moodle 5.0.9, 5.1.6, 5.2.2. Check the vendor advisory for mitigations.

References

• http://git.moodle.org/gw?p=moodle.git&a=search&h=HEAD&st=commit&s=MDL-88585
• https://access.redhat.com/security/cve/CVE-2026-102584
• https://bugzilla.redhat.com/show_bug.cgi?id=2543637
• https://moodle.org/mod/forum/discuss.php?d=482502

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