CVE-2025-65518 Denial of service in n/a
Unauthenticated remote attackers can cause a persistent denial of service in Plesk Obsidian by sending crafted requests to the password endpoint.
- 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-2025-65518?
CVE-2025-65518 is a high-severity denial of service vulnerability in n/a, published on 8 Jan 2026. An attacker can exploit it over the internet without logging in, with no action from the victim.
Official description
Plesk Obsidian versions 8.0.1 through 18.0.73 are vulnerable to a Denial of Service (DoS) condition. The vulnerability exists in the get_password.php endpoint, where a crafted request containing a malicious payload can cause the affected web interface to continuously reload, rendering the service unavailable to legitimate users. An attacker can exploit this issue remotely without authentication, resulting in a persistent availability impact on the affected Plesk Obsidian instance.
Which versions are affected by CVE-2025-65518?
It affects 1 product.
Products include Webpros Plesk Obsidian.
How do I fix CVE-2025-65518?
No fix has been published for CVE-2025-65518 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-2025-65518 being exploited?
It is not confirmed as exploited in the wild, but public exploit code for CVE-2025-65518 exists.
Public exploit code: 1 proofs of concept on GitHub.
Sources
Also known as GHSA-pgxq-gj96-mq7g.