release: v0.11.18 — clés computed fail-closed (SB-RCE-2026-01) - #507
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…2026-01, review 2026-08-26)
Nouvelle review du chercheur : foldStaticValue ne résolvait que 3 types de
nœuds (Literal, TemplateLiteral statique, '+') ; tout autre nœud statiquement
constant était traité comme dynamique et contournait les gardes
FORBIDDEN_PROPERTIES / whitelist. Formes acceptées à tort :
he[(0,'constructor')] (séquence)
he[(false||'constructor')] (logique)
he[(1?'constructor':'x')] (ternaire)
he[['constructor'][0]] (index de tableau)
he[String.fromCharCode(99,111,...)] (appel)
_[(0,'template')]('<%= 7*6 %>')({}) (reopen lodash.template)
Correctif (posture fail-closed + flux de valeur) :
- KNOWN_BINDINGS (libs + globals autorisés + new whitelist) : une clé sans
variable libre est statiquement constante ;
- foldStaticValue étendu (séquence, logique ||/&&/??, ternaire, unaire,
index/membre de littéraux, tableaux/objets littéraux) ;
- resolveKey : constante → repliée et contrôlée ; constante non résolvable
(appel, méthode de littéral, ...) → REJETÉE (fail-closed) ; clé à variable
libre → acceptée (résiduel) MAIS tout sous-chemin atteignant une valeur
interdite → rejeté ((x?['constructor']:[v])[0], (obj,'constructor')).
- Vérifié : 21 cas du chercheur bloqués, 28 patterns prod OK, 182 tests engine.
…ail-closed security(eval): clés computed fail-closed + flux de valeur (SB-RCE-2026-01)
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Migration master → production : v0.11.18 (fail-closed des clés computed + flux de valeur).