==================================================
CVE-2026-49844 VARIANT analysis  |  log4j-api: 2.26.1-fixed-2.26.x
  (alternate data paths into MapMessageJsonFormatter)
==================================================

--- A. nested java.util.Map value (formatMap -> formatNumber) ---
  [nested-map] value=NaN
    JSON output: {"data":{"v":"NaN"}}
    >> non-finite value is QUOTED (valid JSON string)
    >> strict JSON parse OK (valid RFC 8259 JSON)
  [nested-map] value=Infinity
    JSON output: {"data":{"v":"Infinity"}}
    >> non-finite value is QUOTED (valid JSON string)
    >> strict JSON parse OK (valid RFC 8259 JSON)
  [nested-map] value=-Infinity
    JSON output: {"data":{"v":"-Infinity"}}
    >> non-finite value is QUOTED (valid JSON string)
    >> strict JSON parse OK (valid RFC 8259 JSON)

--- B. java.util.List value (formatList -> formatNumber) ---
  [list] value=NaN
    JSON output: {"items":["NaN"]}
    >> non-finite value is QUOTED (valid JSON string)
    >> strict JSON parse OK (valid RFC 8259 JSON)
  [list] value=Infinity
    JSON output: {"items":["Infinity"]}
    >> non-finite value is QUOTED (valid JSON string)
    >> strict JSON parse OK (valid RFC 8259 JSON)
  [list] value=-Infinity
    JSON output: {"items":["-Infinity"]}
    >> non-finite value is QUOTED (valid JSON string)
    >> strict JSON parse OK (valid RFC 8259 JSON)

--- C. Object[] value (formatObjectArray -> formatNumber) ---
  [object-array] value=NaN
    JSON output: {"arr":["NaN"]}
    >> non-finite value is QUOTED (valid JSON string)
    >> strict JSON parse OK (valid RFC 8259 JSON)
  [object-array] value=Infinity
    JSON output: {"arr":["Infinity"]}
    >> non-finite value is QUOTED (valid JSON string)
    >> strict JSON parse OK (valid RFC 8259 JSON)
  [object-array] value=-Infinity
    JSON output: {"arr":["-Infinity"]}
    >> non-finite value is QUOTED (valid JSON string)
    >> strict JSON parse OK (valid RFC 8259 JSON)

--- D. non-List Collection (Set) value (formatCollection -> formatNumber) ---
  [set-collection] value=NaN
    JSON output: {"set":["NaN"]}
    >> non-finite value is QUOTED (valid JSON string)
    >> strict JSON parse OK (valid RFC 8259 JSON)
  [set-collection] value=Infinity
    JSON output: {"set":["Infinity"]}
    >> non-finite value is QUOTED (valid JSON string)
    >> strict JSON parse OK (valid RFC 8259 JSON)
  [set-collection] value=-Infinity
    JSON output: {"set":["-Infinity"]}
    >> non-finite value is QUOTED (valid JSON string)
    >> strict JSON parse OK (valid RFC 8259 JSON)
  [deque-collection] value=NaN
    JSON output: {"deque":["NaN"]}
    >> non-finite value is QUOTED (valid JSON string)
    >> strict JSON parse OK (valid RFC 8259 JSON)

--- E. custom Number subclass (formatNumber else-branch) ---
  [custom-number] value=NaN
    JSON output: {"custom":"NaN"}
    >> non-finite value is QUOTED (valid JSON string)
    >> strict JSON parse OK (valid RFC 8259 JSON)
  [custom-number] value=Infinity
    JSON output: {"custom":"Infinity"}
    >> non-finite value is QUOTED (valid JSON string)
    >> strict JSON parse OK (valid RFC 8259 JSON)
  [custom-number] value=-Infinity
    JSON output: {"custom":"-Infinity"}
    >> non-finite value is QUOTED (valid JSON string)
    >> strict JSON parse OK (valid RFC 8259 JSON)

--- F. BigInteger overflow -> Infinity (formatNumber else-branch) ---
  (sanity) huge.doubleValue() = Infinity  (expect Infinity; isFinite=false)
  [bigint-overflow] value=Infinity
    JSON output: {"huge":"Infinity"}
    >> non-finite value is QUOTED (valid JSON string)
    >> strict JSON parse OK (valid RFC 8259 JSON)

--- G. StringBuilderFormattable emitting bare NaN (control: always quoted) ---
  [formattable-nan] value=NaN
    JSON output: {"formattable":"NaN"}
    >> non-finite value is QUOTED (valid JSON string)
    >> strict JSON parse OK (valid RFC 8259 JSON)

==================================================
VARIANT SUMMARY (2.26.1-fixed-2.26.x)
  total cases tested        : 18
  bare NaN/Infinity tokens  : 0
  quoted NaN/Infinity tokens: 18
  JSON parse failures       : 0
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VERDICT|2.26.1-fixed-2.26.x|FIXED|bare=0|quoted=18|parseFail=0