Vulnerability in Froxlor
CVE-2026-100715
Froxlor through 2.3.10 is vulnerable to arbitrary file deletion via symlink following in the FTP data deletion cron task. Cron task 8 (deleteFtpData), queued when an FTP account is deleted, calls FileDir::makeCorrectDir() without the $fixed_homedir argument, so the symlink component walk is skipped, and then executes 'rm -rf' as root on the resulting path with string-level guards only. Because makeCorrectDir() appends a trailing slash, GNU rm dereferences a symlink used either as an intermediate path component or as the final component. An authenticated customer who can write to the FTP home directory can plant a symlink between task insertion and cron execution, causing the root cron job to recursively delete arbitrary directory trees, resulting in cross-tenant data destruction and host denial of service. This issue is fixed in Froxlor 2.3.12.
Published · last modified .
CVSS v3 metric
CVSS v3 base score 9.6 (Critical). Vector: CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:C/C:N/I:H/A:H.
EPSS exploit prediction
No EPSS score from FIRST.org yet. New CVEs usually get one within a few days; no score means no signal yet, not low risk. How EPSS works.
Affected products
Weakness classification (CWE)
References
- github.com/froxlor/froxlor/security/advisories/GHSA-px4q-2rf7-cvcf (vendor-advisory)
- www.vulncheck.com/advisories/froxlor-before-2.3.12-arbitrary-file-deletion-via-… (third-party-advisory)
Frequently asked questions
- What is CVE-2026-100715?
- CVE-2026-100715 is a critical-severity vulnerability in Froxlor, classified under Improper Link Resolution Before File Access. CVSS score: 9.6/10. Published 2026-09-26.
- How severe is CVE-2026-100715?
- Critical severity. CVSS v3 base score is 9.6 out of 10.