CVE-2026-40834 Authenticated SQLi in saveDashboardLayout function
An attacker can exploit SQL injection in the dashboard layout function to read the entire database and modify non-critical entries.
- 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-2026-40834?
CVE-2026-40834 is a high-severity SQL injection vulnerability in Helmholz mbCONNECT24, published on 27 May 2026. Any signed-in user can exploit it over the network, with no action from the victim.
Official description
An low privileged remote attacker can exploit an unauthenticated SQL Injection vulnerability in the dash_layout.php files saveDashboardLayout function due to improper neutralization of special elements in a SQL INSERT command allowing for reading the whole database and inserting entries into a non critical table. This can result in a total loss of confidentiality and some loss of integrity.
Weakness: CWE-89
Which versions are affected by CVE-2026-40834?
How do I fix CVE-2026-40834?
No fix has been published for CVE-2026-40834 yet. Limit exposure of the affected software until one is available.
Use parameterised queries everywhere and never build SQL by joining strings. Upgrade affected software first; a web application firewall only buys time. More about SQL injection.
Is CVE-2026-40834 being exploited?
There is no known exploitation of CVE-2026-40834 in the wild and no public exploit code.
Sources
Also known as GHSA-6mg8-8793-2qp7.