CVE-2026-109961 Froxlor 0.10.0 before 2.3.14 Newline Injection via Ftps.add additional_members
Authenticated users can inject newlines to modify root-owned group files, enabling local privilege escalation in Froxlor.
- Exploited in the wild
- Not known
- Login needed
- Any signed-in user
- Attackable
- Over the internet
- Victim action needed
- Not needed
- Fix
- None listed
What is CVE-2026-109961?
CVE-2026-109961 is a high-severity vulnerability in froxlor, published on 13 Oct 2026. Any signed-in user can exploit it over the network, with no action from the victim.
Official description
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.
Weakness: CWE-74
Which versions are affected by CVE-2026-109961?
How do I fix CVE-2026-109961?
No fix has been published for CVE-2026-109961 yet. Limit exposure of the affected software until one is available.
Is CVE-2026-109961 being exploited?
It is not confirmed as exploited in the wild, but public exploit code for CVE-2026-109961 exists.
Sources
Also known as GHSA-5986-h43p-hp85, GHSA-v44g-c58r-37w2.