It happened around 6:30 p.m. Sunday in the vicinity of 45th Street and 8th Avenue in Sunset Park.
Police say the woman was walking with her kids when an unidentified male approached her and displayed a knife.
ALSO READ | 85-year-old woman dragged out of elevator in Bronx purse snatching
He then slashed her stomach, causing a minor laceration, before fleeing southbound on 7th Avenue on foot.
The victim was taken to Lutheran Medical in stable condition.
The suspect was later seen on surveillance video hopping a turnstile at a nearby subway station.
Anyone with information in regard to this incident is asked to call the NYPD's Crime Stoppers Hotline at 1-800-577-TIPS (8477) or for Spanish, 1-888-57-PISTA (74782).
ALSO READ | String of New York City subway attacks reported day after Christmas
* More Brooklyn news
* Send us a news tip
* Download the abc7NY app for breaking news alerts
* Follow us on YouTube
Submit a News Tip