vulns.co
/
GKData.io MCP
AP / Application

Mobile links and API hosts

Review mobile link association, client configuration, and backend APIs as complementary controls with server-owned authorization.

Guide 10 / 154 review notesUpdated 2026-10-11
Download .md ↓JSON ↗

The review

What to look for

Defensive study and review of artifacts supplied by their owner. Record missing evidence as an open question.

  1. Inventory claimed destinations

    Document verified domains, path rules, package identifiers, and the user-visible destination for each link class.

  2. Review handoff state

    Ensure links do not carry authority that the backend cannot independently validate and expire.

  3. Trace backend ownership

    For every mobile API object, verify the server authorizes the current user and tenant, independent of the app UI.

  4. Minimize local secrets

    Review storage, logs, and diagnostics so tokens and account data are not exposed beyond the needed boundary.

What to produce

  • Link association inventory
  • Client-to-server authority map
  • Local data handling notes

Common mistakes

  • Trusting a client-side route as authorization
  • Leaving deep-link state reusable
  • Treating a configured hostname as ownership proof

Continue the study

Reading & source context

Editorial notes above connect these references. Open each record for its original source and review date.

Authorization Cheat SheetOWASP Cheat Sheet Series RFC 10017: OAuth 2.0 for Browser-Based ApplicationsInternet Engineering Task Force / RFC Editor OWASP Logging: trustworthy and minimal application evidenceOWASP Cheat Sheet Series

Visual models

Approved grant context, including subject, client, permitted resources and actions, and a first-issuance or renewal request are both required inputs. Resolve trusted grant context and check that the grant and client are correct and requested authority remains within approval. Issue only bounded authority when all checks pass. Do not issue on mismatch or incomplete binding. Changing the approved authority requires a separate authorization decision; no automatic-consent loop is shown.Delegated authority stays within the approved grant ↗

Connected disclosures

Google device grants lost client and permission bindingGoogle

From the field toolkit

App Links and Universal Linksplaybooks ↗Mobile links and app associationchecklists ↗

Guide by GK Data · Research snapshot 2026-10-04.
Sources and review dates are preserved in the library provenance.

Next skillParsers, archives, and fail-open →