A lack of rain, an ongoing economic crisis and years of civil war are being blamed for the worsening situation.
The report stopped short of declaring a famine, but says nearly two million people go without food for long periods and suffer acute malnutrition, which is leading to many deaths.
Over the past two years, the number of people needing food aid has increased by two million.
If the lack of rain and poor harvests continue, 21,000 people could suffer from famine.
What should be done to stop this disaster?
Presenter: Adrian Finighan