SNS Records / ROA — Case study (public-safe)

Engagement type: vulnerability research (responsible disclosure)
Status: Paid / Confirmed
Scope note: this page is intentionally sanitized. No exploit steps, no payloads, no weaponizable details.

Executive summary

We identified a cross-chain verification consistency issue caused by representation/size invariants not being enforced uniformly across the verification flow.

The practical risk class is validation mismatch: when different components interpret the same identity/record material under different assumptions (e.g., fixed-length vs variable-length representations), systems can drift into states that are incorrect, fragile, or bypass-prone depending on surrounding logic.

This report was accepted and rewarded via a responsible disclosure process.

Why it matters (non-technical)

Security systems rely on “everyone agrees what the data means.”
If two parts of the system disagree on the shape of an identity proof or record, you can get:

Technical summary (high-level)

We intentionally omit reproduction details to prevent abuse.

1) Normalize representations at the boundary (single canonical form).
2) Enforce strict size invariants and fail closed on mismatch.
3) Add regression tests covering:

What we delivered (client-safe artifacts)

Disclosure & safety

We follow responsible disclosure.
This page intentionally avoids details that could enable exploitation.

If you are the maintainer of a system with similar verification flows and want a private technical walkthrough, reach out.

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