Medium severity5.3NVD Advisory· Published Nov 4, 2026
CVE-2026-121938
CVE-2026-121938
Description
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.
Affected products
1- Range: <3.31.0
Patches
Vulnerability mechanics
References
6- github.com/moyangzhan/langchain4j-aideepin/blob/v3.30.0/server/adi-common/src/main/java/com/moyz/adi/common/service/CharacterService.javanvd
- github.com/moyangzhan/langchain4j-aideepin/commit/9b2fee6b66836a0efd5599cfcddd05b80b05ca93nvd
- github.com/moyangzhan/langchain4j-aideepin/issues/116nvd
- github.com/moyangzhan/langchain4j-aideepin/pull/117nvd
- hackmd.io/@hieuPenguinnn/langchain4j-aideepin-character-conversation-cross-user-idornvd
- www.vulncheck.com/advisories/langchain4j-aideepin-before-3.31.0-idor-via-get-character-uuidnvd
News mentions
0No linked articles in our index yet.