MediumVulnerabilityLLM-specific

CVE-2025-60511: Moodle OpenAI Chat Block plugin IDOR via blockId parameter

Source: NVD(opens in a new tab)
Identifier: CVE-2025-60511
Published: October 21, 2025
Record updated: October 9, 2026

Known exploitation: Not listed in the CISA Known Exploited Vulnerabilities catalog at the last check.
EPSS: 0.2%

Summary

CVE-2025-60511 affects the Moodle OpenAI Chat Block plugin 3.0.1 (2025021700). Insufficient validation of the blockId parameter in /blocks/openai_chat/api/completion.php makes it an Insecure Direct Object Reference (IDOR), classified as CWE-639. An authenticated student can impersonate another user's block, including an administrator's, and run queries under that block's configuration, which can expose administrator-only Source of Truth entries, alter model behavior, and potentially misuse API resources.

Mitigation

The source does not state a fix yet. Check the original advisory for updates.

Details

Scores and exploitation

CVSS score: 4.3(medium)
EPSS: 0.2%Estimated probability that this CVE is exploited in the next 30 days, from the FIRST Exploit Prediction Scoring System. Read on November 4, 2026.

Weaknesses and techniques

Weakness (CWE): CWE-639

Affected

Vendors: OpenAI

Classification

Attack type: Other
Attack sophistication: Trivial
AI component targeted: Plugin
Impact: Confidentiality,
Integrity
Labels: security

How this record was produced

Summaries, mitigations and labels on this page are generated automatically from the source. The linked source is authoritative. The source gives this advisory a description and no title, so the title above is a headline generated from the source text.

Original source: https://nvd.nist.gov/vuln/detail/CVE-2025-60511

First tracked: February 15, 2026 at 08:49 PM ET, from NVD/CVE Database

Classifier: claude-haiku-5-5, prompt v4

Classifier confidence: 90% (self-assessed)

Summary

Mitigation

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