CVE-2026-4831 kalcaddle kodbox Password-protected Share auth.class.php can improper authentication
Remote attackers can bypass authentication in password-protected shares to access or modify files, requiring high complexity and specific configurations.
- 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-2026-4831?
CVE-2026-4831 is a medium-severity authentication bypass 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 security flaw has been discovered in kalcaddle kodbox 1.64. Impacted is the function can of the file /workspace/source-code/app/controller/explorer/auth.class.php of the component Password-protected Share Handler. Performing a manipulation results in improper authentication. The attack is possible to be carried out remotely. The complexity of an attack is rather high. The exploitability is considered difficult. The exploit has been released to the public and may be used for attacks. The vendor was contacted early about this disclosure but did not respond in any way.
Weakness: CWE-287
Which versions are affected by CVE-2026-4831?
How do I fix CVE-2026-4831?
No fix has been published for CVE-2026-4831 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-2026-4831 being exploited?
There is no known exploitation of CVE-2026-4831 in the wild and no public exploit code.
Sources
Also known as GHSA-8hrp-4v5x-m9q3.