Vulnerability in Froxlor
CVE-2026-109961
Froxlor 0.10.0 before 2.3.14 contains a newline injection vulnerability that allows authenticated customers to inject arbitrary entries into the root-owned NSS group database via the unvalidated additional_members parameter of the Ftps.add API. Attackers can embed newline characters that the REBUILD_NSSUSERS cron writes unsanitized into /var/lib/extrausers/group, creating privileged group entries for local privilege escalation.
Published · last modified .
CVSS v3 metric
CVSS v3 base score 8.5 (High). Vector: CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:C/C:N/I:H/A:L.
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-v44g-c58r-37w2 (vendor-advisory)
- www.vulncheck.com/advisories/froxlor-0.10.0-before-2.3.14-newline-injection-via… (third-party-advisory)
Frequently asked questions
- What is CVE-2026-109961?
- CVE-2026-109961 is a high-severity vulnerability in Froxlor, classified under Improper Neutralization of Special Elements in Output Used by a Downstream Component (Injection). CVSS score: 8.5/10. Published 2026-10-13.
- How severe is CVE-2026-109961?
- High severity. CVSS v3 base score is 8.5 out of 10.