CVE-2026-4830 kalcaddle kodbox Public Share userShare.class.php add privilege escalation
Remote attackers can exploit unrestricted file upload in kodbox to achieve privilege escalation and potential code execution.
- 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-2026-4830?
CVE-2026-4830 is a medium-severity vulnerability in kalcaddle kodbox, published on 26 Mar 2026. An attacker can exploit it over the internet without logging in, with no action from the victim.
Official description
A vulnerability was identified in kalcaddle kodbox 1.64. This issue affects the function Add of the file app/controller/explorer/userShare.class.php of the component Public Share Handler. Such manipulation leads to unrestricted upload. The attack can be executed remotely. This attack is characterized by high complexity. The exploitability is assessed as difficult. The exploit is publicly available and might be used. The vendor was contacted early about this disclosure but did not respond in any way.
Which versions are affected by CVE-2026-4830?
How do I fix CVE-2026-4830?
No fix has been published for CVE-2026-4830 yet. Limit exposure of the affected software until one is available.
Is CVE-2026-4830 being exploited?
There is no known exploitation of CVE-2026-4830 in the wild and no public exploit code.
Sources
Also known as GHSA-264f-3frq-cpxq.