PT-2026-65442 · Opensolution · Quick.Cms

Karol Czubernat · CVE-2026-63303 · Published 2026-07-28 · Updated 2026-07-28

Mitre

CVSS v4.0

5.1

Medium

Base vector

AV:N/AC:L/AT:N/PR:H/UI:N/VC:N/VI:N/VA:N/SC:L/SI:N/SA:N

A Path Traversal vulnerability exists in Quick.CMS through the URI path component of HTTP requests, where the server fails to normalize dot-dot-slash (../) sequences before resolving and serving the requested file. An authenticated attacker with admin privileges can use this vulnerability to read contents of files located in the sibling directory of the webroot via a crafted HTTP request containing ../ sequences in the URI.

The vendor assessed the likelihood of exploitation as very low and determined that a fix is not necessary.

Fix

Relative Path Traversal

Weakness Enumeration

CWE-23

Related Identifiers

CVE-2026-63303

Affected Products

Quick.Cms

References · 3

• https://nvd.nist.gov/vuln/detail/CVE-2026-63303 · Security Note
• https://cert.pl/en/posts/2026/07/CVE-2026-63301 · Note
• https://opensolution.org · Note