Path Traversal Vulnerability in Quick.CMS by Open Solution
CVE-2026-63303

5.1MEDIUM

Key Information:

Vendor

Opensolution

Status
Quick.cms
Vendor
CVE Published:
28 July 2026

What is CVE-2026-63303?

A Path Traversal vulnerability exists in Quick.CMS, allowing an authenticated attacker with admin privileges to manipulate HTTP requests. By exploiting this flaw, an attacker can craft a URI containing dot-dot-slash (../) sequences to access files located outside the intended webroot directory. This means sensitive files in sibling directories may be exposed if proper security measures are not implemented.

Affected Version(s)

Quick.CMS 0 <= 6.8.0

References

https://cert.pl/en/posts/2026/07/CVE-2026-63301
third-party-advisory
https://opensolution.org/
product

CVSS V4

Score:
5.1
Severity:
MEDIUM
Confidentiality:
None
Integrity:
None
Availability:
None
Attack Vector:
Network
Attack Complexity:
Low
Attack Required:
None
Privileges Required:
Undefined
User Interaction:
None

Timeline

  • Vulnerability published

  • Vulnerability Reserved

Credit

Karol Czubernat
.