Moodle up to 4.5.12/5.0.8/5.1.5/5.2.1 XML grade import feature cross-site request forgery

Summaryinfo

A vulnerability was found in Moodle up to 4.5.12/5.0.8/5.1.5/5.2.1. It has been classified as problematic. Impacted is an unknown function of the component XML grade import feature. This manipulation causes cross-site request forgery. This vulnerability is registered as CVE-2026-102588. Remote exploitation of the attack is possible. No exploit is available. Upgrading the affected component is recommended.

Detailsinfo

A vulnerability was found in Moodle up to 4.5.12/5.0.8/5.1.5/5.2.1. It has been declared as problematic. Affected by this vulnerability is an unknown code block of the component XML grade import feature. The manipulation with an unknown input leads to a cross-site request forgery vulnerability. The CWE definition for the vulnerability is CWE-352. The web application does not, or can not, sufficiently verify whether a well-formed, valid, consistent request was intentionally provided by the user who submitted the request. As an impact it is known to affect integrity. The summary by CVE is:

A flaw was found in Moodle. The XML grade import feature lacks proper Cross-Site Request Forgery (CSRF) token validation. By tricking an authenticated user with grade management permissions into visiting a malicious webpage, an attacker can trigger unauthorized requests on the victim's behalf. This flaw allows a remote attacker to set or overwrite student grades without authorization.

It is possible to read the advisory at git.moodle.org. This vulnerability is known as CVE-2026-102588 since 09/29/2026. The exploitation appears to be easy. The attack can be launched remotely. The exploitation doesn't need any form of authentication. It demands that the victim is doing some kind of user interaction. The technical details are unknown and an exploit is not publicly available. The pricing for an exploit might be around USD $0-$5k at the moment (estimation calculated on 09/30/2026).

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-2026-89727). Statistical analysis made it clear that VulDB provides the best quality for vulnerability data.

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/

CPE 2.3info

• 🔒
• 🔒
• 🔒

CPE 2.2info

• 🔒
• 🔒
• 🔒

CVSSv4info

CVSSv3info

CVSSv2info

Exploitinginfo

Threat Intelligenceinfo

Countermeasuresinfo

Timelineinfo

Sourcesinfo

Entryinfo

Statistical analysis made it clear that VulDB provides the best quality for vulnerability data.

Discussion