CVE-2026-11860
HighCVSS 7.5Exploitation Probability (EPSS)
Low risk15th percentile - higher than 15% of all known CVEs
Summary
Quick.CMS deserializes user-controlled data received over plaintext HTTP without ensuring integrity or authenticity. Attackers can tamper with serialized payloads in transit and inject malicious objects, leading to remote code execution. Exploitation is triggered automatically when an administrator accesses the admin panel.
Risk Assessment
An attacker can remotely execute arbitrary code on the server, leading to full system and data compromise.
Recommendation
Update Quick.CMS to version 6.8 or later and enforce HTTPS communication.
Other vulnerabilities in Quick.CMS
See all- CVE-2024-58308Critical
Quick.CMS 6.7 contains a SQL injection vulnerability that allows unauthenticated attackers to bypass login authentication by manipulating the login form. Attackers can inject specific SQL payloads like ' or '1'='1 to gain unauthorized administrative access to the system.
- CVE-2026-33385Medium
A Blind SQL injection vulnerability has been identified in Quick.CMS. Improper neutralization of input provided by a high-privileged user into multiple fields in the administration panel allows for Blind SQL Injection attacks. The vendor states that remediation was not deemed necessary due to the trust model.
- CVE-2026-63303Medium
Quick.CMS is vulnerable to Path Traversal via the URI path component of HTTP requests. An authenticated attacker with admin privileges can read files in the parent directory of the webroot using ../ sequences in the URI.
- CVE-2026-63302Medium
Quick.CMS is vulnerable to Local File Inclusion (LFI) in the admin.php endpoint via the p parameter. An authenticated attacker with admin privileges can include arbitrary files within the application's directory structure, revealing directory structure and absolute paths.
- CVE-2026-63301High
In Quick.CMS, the admin UI restricts deletion of the primary language, but the API endpoint lacks server-side authorization. An authenticated admin can send a direct HTTP request to delete the primary language, causing Denial of Service (DoS). Combined with a CSRF vulnerability (CVE-2026-1468), an unauthenticated attacker can trick an admin into clicking a malicious link, triggering DoS.
Original NVD description (English source)
Quick.CMS deserializes user-controlled data received over plaintext HTTP without ensuring integrity or authenticity. This allows attackers to tamper with serialized payloads in transit and inject malicious objects. Because deserialization is performed without proper validation or class restrictions, crafted payloads can trigger dangerous magic methods (e.g., __wakeup() and __destruct()) and leverage gadget chains, resulting in arbitrary code execution. Exploitation is triggered automatically when an administrator accesses the admin panel. When successfully exploited, this vulnerability allows attackers to execute arbitrary code on the server via manipulated serialized data transmitted over an unprotected channel. This issue was mitigated by limiting the communication to HTTPS in a patch for version 6.8 published on 14.05.2026, deployments without this patch remain vulnerable.