This comes after the Australian team’s bus was delayed on its way to training due to traffic being stopped by the protesters near The Oval.
Police had to intervene and clear the way for the team to reach the training venue.
Notably, England’s team bus also faced a similar delay caused by the same group of protesters while en route to Lord’s for their one-off test against Ireland last week.
“It’s something we got in the security briefing a couple days ago,” Cummins told reporters.
“I’ve heard that they’re aware of it and kind of keeping an eye out. But that’s as much as we’ve heard.
“So hopefully, it doesn’t happen, obviously. But yeah, I’ve heard there’s a few different events that have been affected.”
‘Just Stop Oil’ protesters halted the world snooker championship and the English Premiership rugby final in recent months.
One protester climbed onto a table and scattered a bag of orange powder paint at the snooker tournament while protesters invaded the pitch 15 minutes into the rugby match at Twickenham between Saracens and Sale.
Cummins has long voiced concerns about the impact of climate change but did not throw his weight behind the demonstrations.
“My view is always just there’s right ways to go about things and potentially not the right way to go about things,” he said.
“Whenever anyone’s got any beliefs, you just hope you take the right option.”
ESPNcricinfo reported that the International Cricket Council has prepared a back-up pitch at The Oval in case activists disrupt the final.
(With inputs from Reuters)