  We investigate the data collected by the high-cadence microlensing surveys
during the 2022 season in search for planetary signals appearing in the light
curves of microlensing events. From this search, we find that the lensing event
MOA-2022-BLG-249 exhibits a brief positive anomaly that lasted for about 1 day
with a maximum deviation of $\sim 0.2$~mag from a single-source single-lens
model. We analyze the light curve under the two interpretations of the anomaly:
one originated by a low-mass companion to the lens (planetary model) and the
other originated by a faint companion to the source (binary-source model). It
is found that the anomaly is better explained by the planetary model than the
binary-source model. We identify two solutions rooted in the inner--outer
degeneracy, for both of which the estimated planet-to-host mass ratio, $q\sim
8\times 10^{-5}$, is very small. With the constraints provided by the microlens
parallax and the lower limit on the Einstein radius, as well as the blend-flux
constraint, we find that the lens is a planetary system, in which a super-Earth
planet, with a mass $(4.83\pm 1.44)~M_\oplus$, orbits a low-mass host star,
with a mass $(0.18\pm 0.05)~M_\odot$, lying in the Galactic disk at a distance
$(2.00\pm 0.42)$~kpc. The planet detection demonstrates the elevated
microlensing sensitivity of the current high-cadence lensing surveys to
low-mass planets.
