CVE-2025-8261 Vaelsys VaelsysV4 User Creation vgrid_server.php improper authorization
Remote attackers with administrative privileges may exploit improper authorization in the user creation handler, though the vendor disputes the severity.
- 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-2025-8261?
CVE-2025-8261 is a medium-severity missing authorization vulnerability in VaelsysV4, published on 28 Jul 2025. An attacker can exploit it over the internet without logging in, with no action from the victim.
Official description
A weakness has been identified in Vaelsys VaelsysV4 4.1.0. This vulnerability affects unknown code of the file /grid/vgrid_server.php of the component User Creation Handler. Executing a manipulation can lead to improper authorization. The attack may be performed from remote. The exploit has been made available to the public and could be used for attacks. The real existence of this vulnerability is still doubted at the moment. The vendor explains: "Based on Vaelsys' analysis, the reported behavior does not allow actions beyond those already permitted to authenticated administrative users, and no change in system configuration or operational practices is necessary."
Which versions are affected by CVE-2025-8261?
It affects 1 product.
Products include Vaelsys Vaelsys.
How do I fix CVE-2025-8261?
No fix has been published for CVE-2025-8261 yet. Limit exposure of the affected software until one is available.
Upgrade, and check permissions on every request on the server, not only in the interface. More about Missing authorization.
Is CVE-2025-8261 being exploited?
It is not confirmed as exploited in the wild, but public exploit code for CVE-2025-8261 exists.
Other vulnerabilities in VaelsysV4
Sources
Also known as GHSA-7xg6-2whq-73vv.