MEDIUM 6.0 NVD
CVE-2026-121938
langchain4j-aideepin before 3.31.0 contains an insecure direct object reference vulnerability that allows authenticated users to read other users' character-cha
langchain4j-aideepin before 3.31.0 contains an insecure direct object reference vulnerability that allows authenticated users to read other users' character-chat conversations by supplying their character uuid. Attackers can request GET /character/{uuid}, which CharacterService.detail resolves without an ownership check, to obtain victims' questions, AI answers, and attachment and audio URLs.
References
- https://github.com/moyangzhan/langchain4j-aideepin/blob/v3.30.0/server/adi-common/src/main
- https://github.com/moyangzhan/langchain4j-aideepin/commit/9b2fee6b66836a0efd5599cfcddd05b8
- https://github.com/moyangzhan/langchain4j-aideepin/issues/116
- https://github.com/moyangzhan/langchain4j-aideepin/pull/117
- https://hackmd.io/@hieuPenguinnn/langchain4j-aideepin-character-conversation-cross-user-id
This medium severity vulnerability with a CVSS score of 6.0 was published on 2026-11-04 via NVD.
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