CVE-2025-60511

Severity: medium (CVSS 4.3 v3.1)
Exploited in the wild: not listed in CISA KEV
EPSS: 0.2% probability of exploitation in the next 30 days
Public exploit or detection template: none known
Published: 2025-10-21 · updated 2026-07-05
Weakness: CWE-639

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.

References

https://github.com/onurcangnc/moodle_block_openai_chat
https://onurcangenc.com.tr/posts/idor-in-moodle-openai-chat-block-block_openai_chat-proof-of-concept-poc--cve-2025-60511/

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