{
  "same_root_cause": true,
  "confidence": "high",
  "parent_root_cause": "widgetopts_safe_eval() exposes PHP eval() of user-supplied Display Logic to low-privilege users, with only a preview-context guard and an incomplete blocklist/token validator; an authenticated Contributor reaches eval() via the block-renderer REST endpoint (no save step) by bypassing the $_GET['context'] preview guard (context=edit in JSON body) and the token validator (variable-variable call ${'z'}(...) with '}' before '(' not blocked).",
  "variant_root_cause": "Identical sink (widgetopts_safe_eval -> eval) and identical trust boundary (Contributor over REST -> server eval). Candidate variants exercise the same sink via (a) the same endpoint with alternate validator-bypass payloads (stripslashes differential, brace-call, concat callable) and (b) an alternate data path (freeform <!--start_widgetopts--> comment -> innerContent extraction -> trusted eval). On vulnerable 4.2.3 all of (a) that pass the validator reach eval (same root cause, alternate triggers).",
  "equivalence_reasoning": "All tested variants target the same eval() sink in includes/extras.php::widgetopts_safe_eval reached through the Display Logic module, crossing the same Contributor->server trust boundary. They differ only in payload shape (validator-bypass technique) or data carrier (parsed attrs vs freeform comment), not in sink or trust boundary. They are therefore alternate triggers of the same root-cause bug, not a separate bug.",
  "fix_coverage_of_variants": "The 4.2.4 fix's closed-default trust gate (G1) is input- and path-agnostic: it blocks EVERY non-admin payload from reaching eval regardless of validator behaviour or data carrier, because the only way to bypass G1 is widgetopts_safe_eval_trusted() whose call sites all consume admin-controlled input. Thus all enumerated alternate triggers are covered by G1 on 4.2.4/4.2.5; G2 (token '}' block), G3 (block-renderer sha256 allowlist), G4 (save/REST stripper incl. freeform comments), and G5 (preview guard) provide defense in depth. No variant bypasses the fix.",
  "distinct_bypass_confirmed": false,
  "separate_bug_conflation_check": "The freeform-comment path sets the trust flag at render time (the one shape that could theoretically bypass G3), but it is not a separate bug: it shares the same eval sink and trust boundary, and is closed by G4 + endpoint reachability + G5. It is not reframed as a separate unrelated bug."
}