BaseFortify

Publication date: 2025-10-21

Last updated on: 2026-07-05

Assigner: MITRE

Description

Moodle OpenAI Chat Block plugin 3.0.1 (2025021700) suffers from an Insecure Direct Object Reference (IDOR) vulnerability due to insufficient validation of the blockId parameter in /blocks/openai_chat/api/completion.php. An authenticated student can impersonate another user's block (e.g., administrator) and send queries that are executed with that block's configuration. This can expose administrator-only Source of Truth entries, alter model behavior, and potentially misuse API resources.

CVSS Scores

EPSS Scores

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Meta Information

Published

2025-10-21

Last Modified

2026-07-05

Generated

2026-07-06

AI Q&A

2025-10-21

EPSS Evaluated

2026-07-05

NVD

CVE-2025-60511

EUVD

EUVD-2025-35199

Affected Vendors & Products

Vendor	Product	Version / Range
moodle	openai_chat_block	*

Helpful Resources

Exploitability

CWE

KEV

CWE ID	Description
CWE-639	The system's authorization functionality does not prevent one user from gaining access to another user's data or record by modifying the key value identifying the data.

Attack-Flow Graph

Executive Summary

This vulnerability is an Insecure Direct Object Reference (IDOR) in the Moodle OpenAI Chat Block plugin version 3.0.1. It occurs because the blockId parameter in the API endpoint /blocks/openai_chat/api/completion.php is not properly validated. As a result, an authenticated student can impersonate another user's block, such as an administrator's, and send queries that are executed with that block's configuration.

Impact Analysis

The vulnerability can allow an authenticated student to access administrator-only Source of Truth entries, alter the behavior of the AI model, and potentially misuse API resources. This could lead to unauthorized access to sensitive information and manipulation of system behavior.

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