CVE-2018-9109

Name: CVE-2018-9109
Creator: NVD / NIST
Published: 2018-03-28T06:29:00.26+00:00
License: https://creativecommons.org/publicdomain/zero/1.0/

CRITICALCVSS 9.1/10EPSS 2.96%

Last modified Jun 17, 2026

CVE-2018-9109 is a critical-severity vulnerability rated 9.1/10 on the CVSS scale. 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.. EPSS estimates a 2.96% chance of exploitation in the next 30 days.

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.

Metrics

CVSS 3.1

9.1/10

CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:N

EPSS Probability

2.96%

85.5th percentile

Probability of exploitation in the next 30 days. Learn more

Weakness Enumeration

CWE-22

Affected Software

Vendor	Product	Versions
Std42	Elfinder	< 2.1.36

References

https://github.com/Studio-42/elFinder/commit/157f471d7e48f190f74e66eb5bc73360b5352fd3Patch, Third Party Advisory
https://github.com/Studio-42/elFinder/releases/tag/2.1.36Release Notes, Third Party Advisory
https://github.com/Studio-42/elFinder/wiki/Advisory-about-vulnerability-of-CVE-2018-9109-and-CVE-2018-9110Mitigation, Third Party Advisory
https://github.com/Studio-42/elFinder/commit/157f471d7e48f190f74e66eb5bc73360b5352fd3Patch, Third Party Advisory
https://github.com/Studio-42/elFinder/releases/tag/2.1.36Release Notes, Third Party Advisory
https://github.com/Studio-42/elFinder/wiki/Advisory-about-vulnerability-of-CVE-2018-9109-and-CVE-2018-9110Mitigation, Third Party Advisory

Timeline

Published: Mar 28, 2018
Last Modified: Jun 17, 2026
Status: Modified

Frequently Asked Questions

What is CVE-2018-9109?

How severe is CVE-2018-9109?

CVE-2018-9109 has a CVSS score of 9.1/10 (CRITICAL severity). The EPSS model estimates a 2.96% probability of exploitation in the next 30 days.

How do I fix CVE-2018-9109?

Check the vendor references and advisories linked above for patched versions and mitigation guidance. You can also run a Strix scan to test if your systems are affected.

Are you affected by CVE-2018-9109?

Run a free Strix scan to check your systems for this vulnerability.

Scan your code now

Source: NVD / NIST