59 lines
2.2 KiB
Markdown
59 lines
2.2 KiB
Markdown
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---
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id: RISK-V-0002
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type: verification
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title: "Tenant boundary of user-engine — verification requested"
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date: "2026-08-20"
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requested_by: risk-nexus
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requested_of: user-engine
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status: requested
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findings: [RISK-F-0007]
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workplan: RISK-WP-0004-T04
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---
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# RISK-V-0002 — user-engine tenant boundary (requested)
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The first exercise of the on-request path the operator ruled on 2026-08-19.
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`RISK-F-0007` is `accepted` until production on the strength of that path, and
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a route nobody has walked is a plan rather than a route
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(`RISK-WP-0004-T04`).
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## The request
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One named boundary: **can a caller acting for tenant A obtain, modify or infer
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data belonging to tenant B through `user-engine`?**
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Asked of `user-engine` because they are a consumer with a boundary and are not
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already carrying a finding about one — `tenant-engine` (`RISK-F-0004`) and
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`audit-core` (`RISK-F-0005`) both are, and using them would have tested the
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path against systems already known to fail it.
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## What was asked for, and what deliberately was not
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Asked: whether anything **verifies** the boundary — a test, an assertion, an
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authorization check on the path — and what would have to be true for the answer
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to be yes.
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Not asked: a general security review, a posture ladder self-assessment, or a
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promise. `user-engine` owns the verification; this register scopes and records
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it and verifies nothing itself here.
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## What this exercise is really measuring
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Whether the path works, and where it rubs. Specifically: does the request reach
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someone who can act on it, is "one named boundary" a question a repo can
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actually answer, and does what comes back constitute evidence or reassurance.
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The value is in the friction it exposes, and that gets recorded here whatever
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the answer turns out to be — including if the answer never comes.
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## Outcome
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Pending. Requested 2026-08-20.
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- If the boundary holds with evidence: `RISK-F-0007`'s likelihood falls **for
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this consumer**, and the record says how it was shown.
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- If it does not: a finding of its own, with `user-engine` as fix owner.
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- If nothing comes back: that is the most useful result of the three, because
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the estate is currently carrying `RISK-F-0007` on the assumption that asking
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works.
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