Publish iban test data

CITATION.cff

@@ -4,7 +4,7 @@ title: "IBAN Test Data"
 abstract: "One valid test IBAN per country, generated deterministically and checked with the ISO 7064 MOD-97 algorithm. None is a real account."
 type: dataset
 license: CC0-1.0
-version: "1.0.1"
+version: "1.0.2"
 date-released: "2026-10-01"
 authors:
   - name: "StanzaAPI"

README.md

@@ -41,7 +41,7 @@ https://stanzaapi.com/datasets/iban
 
 ## Security: adversarial corpus
 
-This dataset ships a catalogued **adversarial corpus** of 10 hostile inputs
+This dataset ships a catalogued **adversarial corpus** of 12 hostile inputs
 (injection, XXE, resource exhaustion, encoding attacks, validation bypass, structural confusion,
 and prompt injection for AI agents) with the safe expected behaviour. See
 [`adversarial/`](adversarial/) or the [hub](https://stanzaapi.com/datasets/adversarial).

adversarial/iban-adversarial.json

@@ -4,7 +4,7 @@
   "source": "https://stanzaapi.com/datasets/iban/adversarial",
   "license": "CC0-1.0",
   "format": "iban",
-  "count": 10,
+  "count": 12,
   "cases": [
     {
       "id": "iban-sql-injection",
@@ -115,6 +115,30 @@
       "expected": "Reject: only ASCII digits are valid.",
       "rationale": "Some normalisers fold full-width digits to ASCII, changing the value.",
       "cwe": "CWE-176"
+    },
+    {
+      "id": "iban-whitespace-grouping",
+      "format": "iban",
+      "category": "encoding",
+      "severity": "high",
+      "title": "Human-printed grouping treated as valid input",
+      "payload": "DE89 3704 0044 0532 0130 00",
+      "expected": "Either reject the spaced form, or strip it once and re-validate against the canonical unspaced value — never let one layer strip while another compares raw.",
+      "rationale": "IBANs are printed in groups of four. A parser that strips whitespace accepts this and a parser that does not rejects it, so a value that validated at the edge can fail at the bank — or vice versa.",
+      "cwe": "CWE-20",
+      "evades": "length + charset (if whitespace is stripped)"
+    },
+    {
+      "id": "iban-lowercase-casefold",
+      "format": "iban",
+      "category": "validation-bypass",
+      "severity": "high",
+      "title": "Lower-case IBAN accepted by case folding",
+      "payload": "de89370400440532013000",
+      "expected": "Reject lower case, or upper-case exactly once at the boundary and use that canonical form everywhere downstream.",
+      "rationale": "ISO 13616 defines the IBAN in upper case, but MOD-97 is case-insensitive once letters are folded to digits. A parser that folds silently accepts this, so the stored value and the compared value can diverge.",
+      "cwe": "CWE-20",
+      "evades": "MOD-97 (after case folding)"
     }
   ]
 }