CVE-2025-60511
CVE-2025-60511 is a medium-severity vulnerability with a CVSS 3.x base score of 4.3. It is not currently listed as actively exploited by CISA, and its EPSS exploit-prediction score is low. The underlying weakness is classified as CWE-639.
Key facts
- Severity: Medium (CVSS 3.x base score 4.3)
- EPSS exploit prediction: 0% (9th percentile)
- Actively exploited: Not listed in CISA KEV
- EU (EUVD) id: EUVD-2025-35199
- Weakness: CWE-639
- Published:
- Last modified:
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.
Frequently asked questions
- What is CVE-2025-60511?
- 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.
- How severe is CVE-2025-60511?
- CVE-2025-60511 has a CVSS 3.x base score of 4.3, rated medium severity. It is exploitable over network with low attack complexity, requires low privileges and no user interaction. Impact on confidentiality is low, integrity none, and availability none.
- Is CVE-2025-60511 being actively exploited?
- It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 0% (9th percentile), an estimate of the probability of exploitation in the next 30 days.
- How do I fix CVE-2025-60511?
- Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround.
- Does CVE-2025-60511 have an EU (EUVD) identifier?
- Yes. CVE-2025-60511 is tracked in the ENISA EU Vulnerability Database (EUVD) as EUVD-2025-35199.
- When was CVE-2025-60511 published?
- CVE-2025-60511 was published on 2025-10-21 and last updated on 2026-07-05.
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/
EU advisories (EUVD)
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