According to the company, some 100 application developers are likely to have them access to user data, such as names and profile pictures.
After the scandal caused by the revelation of her scandal Cambridge Analytica, Facebook has tightened its policies on information that developers have access to. However, several external developers "retain access to team member information, such as group activity names and profile pictures, from the Groups API, for longer than we intended," Facebook said in a blog post.
It is unclear how many Facebook users or group members may have been affected by the issue. Facebook declined to share a numerical estimate with CNN.
As Facebook stated in a blog post, at least 11 developers software has been accessing user information in the last 60 days, although there were no "indications of misuse of this information". Since then platform has revoked access to this information and will conduct audits to ensure that any data has been deleted.
Facebook's response to CNN's question about whether there will be penalties for developers is: "The point is not that developers made a mistake, it's with Facebook that has allowed access for more than they would he should have allowed it. "
"The new framework under our agreement with the FTC means more responsibility and transparency in how products are manufactured and maintained," Facebook writes in its blog post. "As we continue to work through this process, we look forward to finding more examples of how we can improve either through our products or by changing our data access policy."