What the vulnerability does
01Description
Missing Authorization vulnerability in SiteGround SiteGround Security sg-security allows Exploiting Incorrectly Configured Access Control Security Levels.This issue affects SiteGround Security: from n/a through <= 1.5.8.
Explanation of Vulnerability in Simple Terms
02Summary
SiteGround Security versions 1.5.8 and earlier lack proper authorization checks, allowing unauthenticated attackers to trigger a denial-of-service condition. The vulnerability requires no user interaction and can be exploited remotely over the network. Site availability may be impacted if the service is disrupted.
What an attacker can do
03Attacker Capabilities
Disrupt site availability by triggering a denial-of-service condition without authentication.
Potential impact on your site
04Site Impact
Your site may become unavailable or experience service disruptions if this vulnerability is exploited.
Conditions required to exploit
05Prerequisites
Network access only; no authentication or user interaction required.
Key dates
06Disclosure timeline
December 16, 2025
CVE published
April 28, 2026
Record updated