CVE-2026-100709 Froxlor before 2.3.11 2FA Bypass via Namespace Confusion
Attackers with a customer account and known admin password can bypass admin 2FA via ID collision, gaining administrator access.
- 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-2026-100709?
CVE-2026-100709 is a high-severity authentication bypass vulnerability in froxlor, published on 26 Sep 2026. Any signed-in user can exploit it over the network, with no action from the victim.
Official description
Froxlor through 2.3.10 stores only a numeric user ID in remembered-2FA tokens (panel_2fa_tokens) without recording the account namespace, and the remembered-token lookup during login is not constrained to the customer or administrator account type. Because customer and administrator IDs are allocated from separate namespaces, a remembered-2FA token legitimately issued to a customer with a given ID also matches an administrator with the same ID. An attacker who controls a customer account with a colliding ID, holds a valid remembered-2FA cookie for it, and already knows the target administrator's password can bypass the administrator's TOTP second factor and obtain an authenticated administrator session. This is a second-factor bypass only; it does not defeat password authentication. Fixed in 2.3.11.
Weakness: CWE-287
Which versions are affected by CVE-2026-100709?
How do I fix CVE-2026-100709?
No fix has been published for CVE-2026-100709 yet. Limit exposure of the affected software until one is available.
Upgrade, and rotate credentials and sessions that may have been exposed. More about Authentication bypass.
Is CVE-2026-100709 being exploited?
There is no known exploitation of CVE-2026-100709 in the wild and no public exploit code.
Sources
Also known as GHSA-9fq7-9w8p-c3qh, GHSA-pj38-8h4x-w384.