Wolfsburg came close with 32 minutes played when Maximilian Arnold's corner kick struck the crossbar before John Anthony Brooks headed just over the target from a promising position two minutes later.
The 38-year-old broke the deadlock in the 34th minute as Theo Hernandez whipped in a cross from the left and the Swede out-jumped two defenders to steer his powering header into the net.
"It was very important to win our next match after the 5-0 defeat. The Copa Libertadores is not only about skill, it's also about heart. And the players showed that."
The 33-year-old leaves as the third highest scorer in Barcelona's history with 198 goals, but was not wanted by new Barca coach Ronald Koeman, while the club was also looking to lower its wage bill.
Non-Japanese athletes should have tests within 72 hours before departure for Japan in their own country or region and will be tested again upon their arrival in Japan, according to the measures released after a joint meeting by Tokyo 2020, the Japanese government and the Tokyo metropolitan government.
Bale's relationship with Real Madrid coach Zinedine Zidane also deteriorated badly in recent months and he hardly played in the last 11 games of last season as Real claimed the La Liga title.
The players are due to be tested again on Monday before a decision was made about their availability for the match.
Vasco are now fifth with 17 points while Coritiba are 16th, six points further back. Enditem
Ibrahimovic was close to finding the net in the 11th minute as his attempt went just inches past the far post after a meandering run in the box.
"Football is wonderful. If we beat Bremen, everything is forgotten, and nobody remembers all the chaos," the striker commented.
"We have very encouraging news about the development of vaccines," he said, adding that experts they talked to have "unanimously" agreed that vaccines will be available at the beginning of next year and in "considerable" doses.