CVE-2026-4592 kalcaddle kodbox Password Login index.class.php tfaVerify improper authentication
Improper authentication in kodbox password login allows remote attackers to bypass two-factor verification and potentially take over accounts.
- Exploited in the wild
- Not known
- Login needed
- Not needed
- Attackable
- Over the internet
- Victim action needed
- Not needed
- Fix
- None listed
What is CVE-2026-4592?
CVE-2026-4592 is a medium-severity authentication bypass vulnerability in kalcaddle kodbox, published on 23 Mar 2026. An attacker can exploit it over the internet without logging in, with no action from the victim.
Official description
A security vulnerability has been detected in kalcaddle kodbox 1.64. This impacts the function loginAfter/tfaVerify of the file /workspace/source-code/plugins/client/controller/tfa/index.class.php of the component Password Login. The manipulation leads to improper authentication. The attack is possible to be carried out remotely. The attack is considered to have high complexity. The exploitability is said to be difficult. The exploit has been disclosed publicly and may be used. The vendor was contacted early about this disclosure but did not respond in any way.
Weakness: CWE-287
Which versions are affected by CVE-2026-4592?
How do I fix CVE-2026-4592?
No fix has been published for CVE-2026-4592 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-2026-4592 being exploited?
It is not confirmed as exploited in the wild, but public exploit code for CVE-2026-4592 exists.
Sources
Also known as GHSA-8f63-r6mw-5h4q.