moyangzhan langchain4j-aideepin up to 3.32.0 Message Reference CharacterMessageController message uuid resource injection

Summaryinfo

A vulnerability marked as problematic has been reported in moyangzhan langchain4j-aideepin up to 3.32.0. This affects the function CharacterMessageController of the component Message Reference. Performing a manipulation of the argument message uuid results in resource injection. This vulnerability is cataloged as CVE-2026-125386. It is possible to initiate the attack remotely. There is no exploit available.

Detailsinfo

A vulnerability, which was classified as problematic, was found in moyangzhan langchain4j-aideepin up to 3.32.0. This affects the function CharacterMessageController of the component Message Reference. The manipulation of the argument message uuid with an unknown input leads to a resource injection vulnerability. CWE is classifying the issue as CWE-99. The product receives input from an upstream component, but it does not restrict or incorrectly restricts the input before it is used as an identifier for a resource that may be outside the intended control sphere. This is going to have an impact on confidentiality. The summary by CVE is:

langchain4j-aideepin through 3.32.0 contains an insecure direct object reference vulnerability in CharacterMessageController that allows authenticated users to access other users' message references due to missing owner checks. Attackers can supply another user's message uuid to the knowledge-embedding-ref, memory-embedding-ref, or graph-ref endpoints to retrieve knowledge-base chunks, long-term memory text, and knowledge-graph data.

It is possible to read the advisory at github.com. This vulnerability is uniquely identified as CVE-2026-125386 since 11/09/2026. The exploitability is told to be easy. It is possible to initiate the attack 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 11/10/2026).

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

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Productinfo

Vendor

• moyangzhan

Name

• langchain4j-aideepin

Version

• 3.0
• 3.1
• 3.2
• 3.3
• 3.4
• 3.5
• 3.6
• 3.7
• 3.8
• 3.9
• 3.10
• 3.11
• 3.12
• 3.13
• 3.14
• 3.15
• 3.16
• 3.17
• 3.18
• 3.19
• 3.20
• 3.21
• 3.22
• 3.23
• 3.24
• 3.25
• 3.26
• 3.27
• 3.28
• 3.29
• 3.30
• 3.31
• 3.32.0

Website

• Product: https://github.com/moyangzhan/langchain4j-aideepin/

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