MediumVulnerability
CVE-2026-121938: langchain4j-aideepin before 3.31.0 contains an insecure direct object reference vulnerability that allows authenticated…
- Source
- NVD(opens in a new tab)
- Identifier
- CVE-2026-121938
- Published
- Record updated
- Known exploitation
- Not listed in the CISA Known Exploited Vulnerabilities catalog at the last check.
Summary
langchain4j-aideepin before 3.31.0 contains an insecure direct object reference flaw that lets any authenticated user read other users' character-chat conversations. An attacker sends GET /character/{uuid} with a victim's character uuid, and CharacterService.detail resolves it without an ownership check, exposing questions, AI answers, and attachment and audio URLs.
Mitigation
The source does not state a fix yet. Check the original advisory for updates.
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