Studio 42 elFinder before 2.1.37 has a directory traversal vulnerability in elFinder.class.php with the zipdl() function that can allow a remote attacker to download files accessible by the web server process and delete files owned by the account running the web server process. NOTE: this issue exists because of an incomplete fix for CVE-2018-9109.

References

• https://nvd.nist.gov/vuln/detail/CVE-2018-9110
• Studio-42/elFinder@e635155
• https://github.com/Studio-42/elFinder/releases/tag/2.1.37
• https://github.com/Studio-42/elFinder/wiki/Advisory-about-vulnerability-of-CVE-2018-9109-and-CVE-2018-9110