CVE-2026-121938
5.3 MEDIUMpublic exploit availablePublished 2026-11-04 · Updated 2026-11-04
AI analysis for this CVE has not been generated yet. Raw NVD data is shown below.
NVD 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.
CVSS vector
CVSS:3.1/AV:N/AC:H/PR:L/UI:N/S:U/C:H/I:N/A:N
Weaknesses
CWE-639
Public exploit & PoC references
- https://github.com/moyangzhan/langchain4j-aideepin/blob/v3.30.0/server/adi-common/src/main/java/com/moyz/adi/common/service/CharacterService.java#L105-L125
- https://github.com/moyangzhan/langchain4j-aideepin/commit/9b2fee6b66836a0efd5599cfcddd05b80b05ca93
- https://github.com/moyangzhan/langchain4j-aideepin/issues/116
- https://github.com/moyangzhan/langchain4j-aideepin/pull/117
All references
- https://github.com/moyangzhan/langchain4j-aideepin/blob/v3.30.0/server/adi-common/src/main/java/com/moyz/adi/common/service/CharacterService.java#L105-L125
- https://github.com/moyangzhan/langchain4j-aideepin/commit/9b2fee6b66836a0efd5599cfcddd05b80b05ca93
- 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-idor
- https://www.vulncheck.com/advisories/langchain4j-aideepin-before-3.31.0-idor-via-get-character-uuid
- https://hackmd.io/@hieuPenguinnn/cve-2026-121938-langchain4j-aideepin-character-conversation-cross-user-idor
Source data: NVD (nvd.nist.gov), public domain. Exploit-DB.ai adds local AI analysis for defensive use only.
Related CVEs
- CRITICALCVE-2024-34323
- MEDIUMCVE-2025-71420PoC
- MEDIUMCVE-2026-100142
- UNSCOREDCVE-2026-100177PoC
- HIGHCVE-2026-100268
- MEDIUMCVE-2026-100272
- HIGHCVE-2026-100514
- HIGHCVE-2026-100517
Related by shared AI tags and CWE weakness class. Browse the full archive.