CVE WatchNov 4, 2026

CVE-2026-121938

langchain4j-aideepin before 3.31.0 contains an insecure direct object reference vulnerability that allows authenticated users to read other

CVSS

5.3

Medium

EPSS

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KEV

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Exploit Today

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0-100

Published: Nov 4, 2026 · Last modified: Nov 4, 2026 · CWE-639

EPSS · 30d

Not enough EPSS history yet.

Technical 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.

Official references

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