CVE-2026-121938
mediumlangchain4j-aideepin before 3.31.0 contains an insecure direct object reference vulnerability that allows authenticated users to read other users' character-ch…
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.
CVSS:3.1/AV:N/AC:H/PR:L/UI:N/S:U/C:H/I:N/A:N Affected products
Not reported by the source (unknown — not "none").
Weakness classification (CWE)
Source: NVD / CISA. “NVD-CWE-Other” and “NVD-CWE-noinfo” mean NVD could not assign a specific weakness.
Mitigation & advisories
No vendor advisory or patch reference tagged by NVD. Check the references below.
References
- https://github.com/moyangzhan/langchain4j-aideepin/blob/v3.30.0/server/adi-common/src/main... disclosure@vulncheck.com
- https://github.com/moyangzhan/langchain4j-aideepin/commit/9b2fee6b66836a0efd5599cfcddd05b8... disclosure@vulncheck.com
- https://github.com/moyangzhan/langchain4j-aideepin/issues/116 disclosure@vulncheck.com
- https://github.com/moyangzhan/langchain4j-aideepin/pull/117 disclosure@vulncheck.com
- https://hackmd.io/@hieuPenguinnn/langchain4j-aideepin-character-conversation-cross-user-id... disclosure@vulncheck.com
- https://www.vulncheck.com/advisories/langchain4j-aideepin-before-3.31.0-idor-via-get-chara... disclosure@vulncheck.com
- https://hackmd.io/@hieuPenguinnn/cve-2026-121938-langchain4j-aideepin-character-conversati... 134c704f-9b21-4f2e-91b3-4a467353bcc0