[FreeTAKServer-UI] Path traversal in FreeTAKServer-UI

An issue in the ?filename= argument of the route /DataPackageTable in FreeTAKServer-UI v1.9.8 allows attackers to place arbitrary files anywhere on the system.

References

• https://nvd.nist.gov/vuln/detail/CVE-2022-25511
• https://github.com/FreeTAKTeam/UI/issues/29
• https://github.com/advisories/GHSA-7cr9-rmqr-fpqp