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CVE-2026-63303

Path Traversal in Quick.CMS

MEDIUM
5.1
CVSS Score
Published: July 28, 2026 at 10:43 AM UTC
Updated: October 24, 2026 at 01:10 PM UTC
1 product affected across 1 vendorQuick.CMS

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Severity
MEDIUM5.1
Exploit prediction
EPSS 0.6%
SSVC
No known exploit

Description

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.

Affected

Our own answer: ranges merged, affected separated from platform-only, with confidence and review flags.

Quick.CMS· Opensolution
90%
0 ≤ v ≤ 6.8.00

Remediation

No guide yet

No remediation guidance has been written for this CVE yet, and no fixed version or vendor advisory is recorded against it.

References (2)

Third Party Advisory
Source: cverecord
https://cert.pl/en/posts/2026/07/CVE-2026-63301
Product
Source: cverecord
https://opensolution.org/

SSVC — Action Prioritization

SSVCNo known exploitNot automatablePartial impact

SSVC signals action urgency (what to patch first), separate from CVSS which measures severity.

CVSS

5.1MEDIUMCERT-PL
Vector?

Quick Info

StatusDEFERRED
CWE
CWE-23

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