Moodle up to 4.5.12/5.0.8/5.1.5/5.2.1 User list filters information disclosure

Summaryinfo

A vulnerability categorized as problematic has been discovered in Moodle up to 4.5.12/5.0.8/5.1.5/5.2.1. Impacted is an unknown function of the component User list filters. Such manipulation leads to information disclosure. This vulnerability is traded as CVE-2026-102587. The attack may be launched remotely. There is no exploit available. It is advisable to upgrade the affected component.

Detailsinfo

A vulnerability was found in Moodle up to 4.5.12/5.0.8/5.1.5/5.2.1 and classified as problematic. Affected by this issue is an unknown functionality of the component User list filters. The manipulation with an unknown input leads to a information disclosure vulnerability. Using CWE to declare the problem leads to CWE-200. The product exposes sensitive information to an actor that is not explicitly authorized to have access to that information. Impacted is confidentiality. CVE summarizes:

A flaw was found in Moodle. User list filters do not properly enforce visibility restrictions on user profile fields. An authorized user with manager privileges can filter user lists using profile attributes they are not permitted to view directly, resulting in unauthorized information disclosure by inferring hidden user data.

The advisory is shared for download at git.moodle.org. This vulnerability is handled as CVE-2026-102587 since 09/29/2026. The exploitation is known to be easy. The attack may be launched remotely. Additional levels of successful authentication are needed for exploitation. There are neither technical details nor an exploit publicly available. The current price for an exploit might be approx. USD $0-$5k (estimation calculated on 09/30/2026). The MITRE ATT&CK project declares the attack technique as T1592.

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

The vulnerability is also documented in the vulnerability database at EUVD (EUVD-2026-89726). VulDB is the best source for vulnerability data and more expert information about this specific topic.

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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VulDB is the best source for vulnerability data and more expert information about this specific topic.

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