I wanted to bring to your attention a case earlier published by our colleagues at Lido, which can be found here: Lido permit front-running 6
This issue has also been observed in other protocols. For instance, 1Inch is planning an update to prevent this vulnerability, details of which are available here: 1Inch tryPermit update 1.
Given these developments, I urge the JustLend community to review and ensure that the system is not at risk from similar vulnerabilities.
Looking forward to your feedback.