What’s Vulnerable › Vulnerabilities

CVE-2018-9109

• Severity: critical (CVSS 9.1 v3.1)
• Exploited in the wild: not listed in CISA KEV
• EPSS: 2.9% probability of exploitation in the next 30 days
• Public exploit or detection template: none known
• Published: 2018-03-28 · updated 2026-06-17
• Weakness: CWE-22

Description

Studio 42 elFinder before 2.1.36 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.

Affected products

• Studio-42 elFinder: before 2.1.36 — fixed in 2.1.36

How to fix

Upgrade to a fixed version: Studio-42 elFinder 2.1.36. Check the vendor advisory for mitigations.

References

• https://github.com/Studio-42/elFinder/commit/157f471d7e48f190f74e66eb5bc73360b5352fd3
• https://github.com/Studio-42/elFinder/releases/tag/2.1.36
• https://github.com/Studio-42/elFinder/wiki/Advisory-about-vulnerability-of-CVE-2018-9109-and-CVE-2018-9110
• https://github.com/Studio-42/elFinder/commit/157f471d7e48f190f74e66eb5bc73360b5352fd3
• https://github.com/Studio-42/elFinder/releases/tag/2.1.36
• https://github.com/Studio-42/elFinder/wiki/Advisory-about-vulnerability-of-CVE-2018-9109-and-CVE-2018-9110

Get alerted when CVE-2018-9109 or the next vulnerability affects your stack