# RAG retrieval or citation resolver crosses tenant boundaries

Search filters, chunk retrieval or citation download omit an ownership decision required for the effective caller.

**Candidate CWE:** [CWE-863](https://cwe.mitre.org/data/definitions/863.html)

## Test hypothesis

Seed A/B private markers; verify owner access and cross-tenant direct denial. As A query for B’s subject without including its secret marker, then compare returned chunk IDs, answer text and citation download.

## Evidence required

Authenticated A context, B document ownership, exact retrieval/resolver path and exposed synthetic content. Distinguish internal retrieval from user-visible disclosure.

## Rule out false positives

Intentionally shared corpora, marker echo from the query and ingestion failures are not tenant-isolation proof.

## Playbook and command references

- [RAG isolation: ingestion, retrieval, citations and revocation](https://bug-bounty-field-manual.kmahshooq.chatgpt.site/modules/rag-tenant-isolation.html) — Trace document authorization through vector search, generated answers, citation downloads, caches and sharing changes.
- [Object, function, and property authorization](https://bug-bounty-field-manual.kmahshooq.chatgpt.site/modules/authz-matrix.html) — Turn identities, tenants, objects, roles, and lifecycle transitions into a reproducible permission matrix.

[Find the associated command snippets](https://bug-bounty-field-manual.kmahshooq.chatgpt.site/commands.html?q=RAG%20isolation%3A%20ingestion%2C%20retrieval%2C%20citations%20and%20revocation)

## Referenced by these target playbooks

[AI, agents & MCP](https://bug-bounty-field-manual.kmahshooq.chatgpt.site/ai.html) · [Web & API](https://bug-bounty-field-manual.kmahshooq.chatgpt.site/web-api.html) · [OSS & self-hosted](https://bug-bounty-field-manual.kmahshooq.chatgpt.site/oss.html)

## Report checklist

- [ ] Capture the affected version, configuration, identities, and object ownership.
- [ ] Preserve a valid baseline and a negative control.
- [ ] Reproduce the forbidden data access, action, or state change on controlled fixtures.
- [ ] Explain the intended security rule and why the observed behavior violates it.
- [ ] State prerequisites, uncertainty, cleanup, and the smallest demonstrated impact.

## Conditional ATT&CK mapping

No direct ATT&CK mapping selected. Record the weakness and demonstrated impact without forcing an adversary-behavior classification. See the [mapping guide](https://bug-bounty-field-manual.kmahshooq.chatgpt.site/attack.html).

## Primary references

- [OWASP Vector and Embedding Weaknesses](https://genai.owasp.org/llmrisk/llm082025-vector-and-embedding-weaknesses/)

[Back to the complete vulnerability catalog](https://bug-bounty-field-manual.kmahshooq.chatgpt.site/vulnerabilities.html)