CVE-2026-42100 DoS in Sparx Pro Cloud Server

High 7.1 Published 19 May 2026 Updated 19 May 2026

Attackers can cause a Denial of Service in Sparx Pro Cloud Server by sending specially crafted SQL queries, crashing the service.

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-2026-42100?

CVE-2026-42100 is a high-severity denial of service vulnerability in Sparx Systems Pro Cloud Server, published on 19 May 2026. Any signed-in user can exploit it over the network, with no action from the victim.

Official description

Improper Handling of Syntactically Invalid Structure in Sparx Pro Cloud Server allows Denial of Service (DoS) attack to be executed by sending an specially crafted SQL query. This causes the Pro Cloud Server service to terminate unexpectedly.

The vendor was notified early about this vulnerability, but didn't respond with the details of vulnerability or vulnerable version range. Only version 6.1 (build 167) and below were tested and confirmed as vulnerable, other versions were not tested and might also be vulnerable.

Weakness: CWE-228

Which versions are affected by CVE-2026-42100?

It affects 1 product.

Products include Sparxsystems Pro Cloud Server.

How do I fix CVE-2026-42100?

No fix has been published for CVE-2026-42100 yet. Limit exposure of the affected software until one is available.

Upgrade, then put limits on request size, rate and nesting depth so one client cannot exhaust the service. More about Denial of service.

Is CVE-2026-42100 being exploited?

There is no known exploitation of CVE-2026-42100 in the wild and no public exploit code.

Sources

Also known as GHSA-r2pf-hp27-79jw.