Moodle up to 4.5.12/5.0.8/5.1.5/5.2.1 Report Builder improper authorization

Summaryinfo

A vulnerability classified as problematic has been found in Moodle up to 4.5.12/5.0.8/5.1.5/5.2.1. Affected is an unknown function of the component Report Builder. This manipulation causes improper authorization. The identification of this vulnerability is CVE-2026-102580. It is possible to initiate the attack remotely. There is no exploit available. It is recommended to upgrade the affected component.

Detailsinfo

A vulnerability classified as problematic was found in Moodle up to 4.5.12/5.0.8/5.1.5/5.2.1. Affected by this vulnerability is some unknown processing of the component Report Builder. The manipulation with an unknown input leads to a improper authorization vulnerability. The CWE definition for the vulnerability is CWE-285. The product does not perform or incorrectly performs an authorization check when an actor attempts to access a resource or perform an action. As an impact it is known to affect integrity. The summary by CVE is:

A flaw was found in Moodle. An authenticated attacker can supply an improperly validated audience class name to the Report Builder component, allowing arbitrary class instantiation. This vulnerability enables the unauthorized creation of internal program objects, which may result in unexpected application behavior.

The advisory is shared at git.moodle.org. This vulnerability is known as CVE-2026-102580 since 09/29/2026. The exploitation appears to be easy. The attack can be launched remotely. Neither technical details nor an exploit are publicly available. The price for an exploit might be around USD $0-$5k at the moment (estimation calculated on 09/30/2026). MITRE ATT&CK project uses the attack technique T1548.002 for this issue.

Upgrading to version 4.5.13, 5.0.9, 5.1.6 or 5.2.2 eliminates this vulnerability.

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Productinfo

Type

• Learning Management Software

Name

• Moodle

Version

• 4.5.0
• 4.5.1
• 4.5.2
• 4.5.3
• 4.5.4
• 4.5.5
• 4.5.6
• 4.5.7
• 4.5.8
• 4.5.9
• 4.5.10
• 4.5.11
• 4.5.12
• 5.0.0
• 5.0.1
• 5.0.2
• 5.0.3
• 5.0.4
• 5.0.5
• 5.0.6
• 5.0.7
• 5.0.8
• 5.1.0
• 5.1.1
• 5.1.2
• 5.1.3
• 5.1.4
• 5.1.5
• 5.2.0
• 5.2.1

License

• open-source

Website

• Product: https://moodle.org/

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