CVE-2026-63303 Details
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.
A path traversal vulnerability has been identified in OpenSolution Quick.CMS, affecting all versions through 6.8.0. The vulnerability arises because the server does not properly normalize dot-dot-slash sequences in the URI path of HTTP requests before resolving and serving the requested files. This flaw allows an authenticated attacker with admin privileges to read files located in the sibling directory of the webroot by sending a crafted HTTP request that includes ../ sequences. The vendor has assessed the likelihood of exploitation as very low and has determined that no fix is necessary.
Metrics
CVSS 4.0 Severity and Vector Strings:
VolerionCVSS 3.x Severity and Vector Strings:
No data available for CVSS Version 2.0 on this CVE.
Volerion
Assessed Jul 28, 2026CISA-ADP
Assessed Jul 28, 2026References to Advisories, Solutions, and Tools
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| URL | Source(s) | Tag(s) |
|---|---|---|
| https://cert.pl/en/posts/2026/07/CVE-2026-63301 | [email protected] | AdvisoryBundleRemedy |
| https://opensolution.org/ | [email protected] | Vendor |
Weakness Enumeration
| CWE-ID | CWE Name | Source |
|---|---|---|
| CWE-23 | Relative Path Traversal | [email protected] |
Affected Products
| Product | Versions |
|---|---|
| OpenSolution Quick.CMS | <= 6.8.0 (semver) |
CPE
Remediation
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Change History
2 change records found show changes
| Date | Action | Recorded By |
|---|---|---|
| Jul 28, 2026 | CVE Modified | CISA-ADP |
| Jul 28, 2026 | New CVE Received | [email protected] |