NPM: JS-YAML: Quadratic CPU consumption in !!omap resolution (3.x and 4.x) — CVE-2026-59870 fix not backported

NPM: JS-YAML: Quadratic CPU consumption in !!omap resolution 3.x and 4.x — CVE-2026-59870 fix not backported vulnerability discovered by ? in WordPress Npm js-yaml versions = 3.0.0, 3.15.1...