Spark sound

So lately theres this weird sound when I play. It sounds like an electrical spark, but its coming from the strings (between the bridge and my strumming hand) does this mean my strings are old or is it something else?

……… and another thing crossed my mind – make sure the instrument cable is tight from the jack to your bass. A loose/floppy connection will no doubt cause this sparking sound frequently. It happens often from plugging and unplugging the cable from the guitar on a regular basis. If this is the case, it's an easy fix. This just means the prong that keeps the cable snug has opened up enough where the cable is loose or the cable keeps falling out of the jack.

The fix - unscrew the jack from your guitar and push the prong inward 'till the cable and jack feel tight and secure.

are your pick ups too high?

Must have been your electric personality Leiria

Could it be string slap? Do you have active pickups?

Are the strings worn at the bridge? Very odd to making a spark sound while unplugged.