MEDIUMCVSS v3.1 5.3Vulnerability

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-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.

Properties

Severity
MEDIUM
Nvd fetched at
2026-11-04T13:33:26.764955+00:00
Cvss severity
MEDIUM
Cvss score
5.3
Retrieved at
2026-11-04T13:34:19+00:00
Score
5.3
Cvss version
3.1
Last source
NVD
Cve id
CVE-2026-121938
Cvss vector
CVSS:3.1/AV:N/AC:H/PR:L/UI:N/S:U/C:H/I:N/A:N
First seen by Signal
2026-11-04T13:34:19+00:00
Vector
CVSS:3.1/AV:N/AC:H/PR:L/UI:N/S:U/C:H/I:N/A:N
Published at
2026-11-04T13:17:28.040
Last modified
2026-11-04T13:17:28.040

Related Entities (1)

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CVE-2026-121938 (CVSS v3.1 5.3) — Ninja Signal Threat Intelligence | Ninja Signal