That's possible, but because fuel line fittings are static I would look (depressingly) to pump seals as a more likely point of failure.
They're a hard working seal, which does wear.
What's it like on starting? Easy all the time, or randomly doesn't want to start very well.
Inspect all hard and soft fuel feed lines for condition and ANY dampness. I've seen the hard lines between the pump and the injectors corrode away and spray a fine mist into the engine bay before now. When the motor was shut off it was the pipe to fill with air, so the motor would start on three and gradually come up to four and then run fine.