What’s Vulnerable › Vulnerabilities

CVE-2025-26531: IDOR in badges allows disabling of arbitrary badges

• Severity: medium (CVSS 5.3 v3.1)
• Exploited in the wild: not listed in CISA KEV
• EPSS: 0.3% probability of exploitation in the next 30 days
• Public exploit or detection template: none known
• Published: 2025-02-24 · updated 2026-06-17
• Weakness: CWE-863

Description

Insufficient capability checks made it possible to disable badges a user does not have permission to access.

Affected products

• Moodle: from 4.1.0 before 4.1.16; from 4.3.0 before 4.3.10; from 4.4.0 before 4.4.6; from 4.5.0 before 4.5.2 — fixed in 4.1.16, 4.3.10, 4.4.6, 4.5.2

How to fix

Upgrade to a fixed version: Moodle 4.1.16, 4.3.10, 4.4.6, 4.5.2. Check the vendor advisory for mitigations.

References

• http://git.moodle.org/gw?p=moodle.git&a=search&h=HEAD&st=commit&s=MDL-84239
• https://moodle.org/mod/forum/discuss.php?d=466148

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