OpenAI Chat Block Plugin 3.0.1 on Moodle completion.php blockId authorization

CVSS Meta Temp Score
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Current Exploit Price (≈)
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CTI Interest Score
Our Cyber Threat Intelligence team is monitoring different web sites, mailing lists, exploit markets and social media networks. The CTI Interest Score identifies the interest of attackers and the security community for this specific vulnerability in real-time. A high score indicates an elevated risk to be targeted for this vulnerability.
6.3$0-$5k0.00

Summaryinfo

A vulnerability identified as critical has been detected in OpenAI Chat Block Plugin 3.0.1 on Moodle. Impacted is an unknown function of the file /blocks/openai_chat/api/completion.php. This manipulation of the argument blockId causes authorization. This vulnerability is handled as CVE-2025-60511. The attack can be initiated remotely. There is not any exploit available.

Detailsinfo

A vulnerability was found in OpenAI Chat Block Plugin 3.0.1 on Moodle. It has been declared as critical. Affected by this vulnerability is some unknown functionality of the file /blocks/openai_chat/api/completion.php. The manipulation of the argument blockId with an unknown input leads to a authorization vulnerability. The CWE definition for the vulnerability is 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. As an impact it is known to affect confidentiality, integrity, and availability. The summary by CVE is:

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.

This vulnerability is known as CVE-2025-60511 since 09/26/2025. The exploitation appears to be easy. The attack can be launched remotely. Technical details of the vulnerability are known, but there is no available exploit. The pricing for an exploit might be around USD $0-$5k at the moment (estimation calculated on 10/22/2025).

By approaching the search of inurl:blocks/openai_chat/api/completion.php it is possible to find vulnerable targets with Google Hacking.

There is no information about possible countermeasures known. It may be suggested to replace the affected object with an alternative product.

Be aware that VulDB is the high quality source for vulnerability data.

Productinfo

Type

Name

Version

CPE 2.3info

CPE 2.2info

CVSSv4info

VulDB Vector: 🔒
VulDB Reliability: 🔍

CVSSv3info

VulDB Meta Base Score: 6.3
VulDB Meta Temp Score: 6.3

VulDB Base Score: 6.3
VulDB Temp Score: 6.3
VulDB Vector: 🔒
VulDB Reliability: 🔍

CVSSv2info

AVACAuCIA
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VectorComplexityAuthenticationConfidentialityIntegrityAvailability
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VulDB Base Score: 🔒
VulDB Temp Score: 🔒
VulDB Reliability: 🔍

Exploitinginfo

Class: Authorization
CWE: CWE-639 / CWE-285 / CWE-266
CAPEC: 🔒
ATT&CK: 🔒

Physical: No
Local: No
Remote: Yes

Availability: 🔒
Status: Not defined
Google Hack: 🔒

EPSS Score: 🔒
EPSS Percentile: 🔒

Price Prediction: 🔍
Current Price Estimation: 🔒

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Threat Intelligenceinfo

Interest: 🔍
Active Actors: 🔍
Active APT Groups: 🔍

Countermeasuresinfo

Recommended: no mitigation known
Status: 🔍

0-Day Time: 🔒

Timelineinfo

09/26/2025 CVE reserved
10/22/2025 +26 days Advisory disclosed
10/22/2025 +0 days VulDB entry created
10/22/2025 +0 days VulDB entry last update

Sourcesinfo

Status: Not defined

CVE: CVE-2025-60511 (🔒)
GCVE (CVE): GCVE-0-2025-60511
GCVE (VulDB): GCVE-100-329191

Entryinfo

Created: 10/22/2025 04:34
Changes: 10/22/2025 04:34 (53)
Complete: 🔍
Cache ID: 216::103

Be aware that VulDB is the high quality source for vulnerability data.

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