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CVE-2026-63303— Path Traversal in Quick.CMS

Quick assessment

Affected
OpenSolution Quick.CMS
Exploitation
No confirmed in-the-wild exploitation; assess based on exposure
Recommended action
Check the vendor advisory and references for a fixed version. If immediate upgrade is impossible, restrict exposure and increase monitoring.

OpenSolution quick.cms是OpenSolution组织开源的一个内容管理系统。 OpenSolution Quick.CMS 6.8.0及之前版本存在路径遍历漏洞，该漏洞源于服务器在解析和提供请求的文件之前未能规范化URI中的点-点-斜杠（../）序列，可能允许经过身份验证的管理员通过特制HTTP请求读取webroot同级目录中的文件。

CVSS 5.1 · Medium EPSS 0.57% · P46

Affected Version Matrix 1

VendorProduct Version RangeStatus
OpenSolution Quick.CMS ≤ 6.8.0 affected
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I. Basic Information for CVE-2026-63303

Vulnerability Information
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Vulnerability Title
Path Traversal in Quick.CMS
Source: CVE Program / CVE List V5
Vulnerability 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.
Source: CVE Program / CVE List V5
CVSS Information
CVSS:4.0/AV:N/AC:L/AT:N/PR:H/UI:N/VC:N/VI:N/VA:N/SC:L/SI:N/SA:N
Source: CVE Program / CVE List V5
Vulnerability Type
相对路径遍历
Source: CVE Program / CVE List V5
Vulnerability Title
OpenSolution Quick.CMS 路径遍历漏洞
Source: CNNVD (China National Vulnerability Database)
Vulnerability Description
OpenSolution quick.cms是OpenSolution组织开源的一个内容管理系统。 OpenSolution Quick.CMS 6.8.0及之前版本存在路径遍历漏洞，该漏洞源于服务器在解析和提供请求的文件之前未能规范化URI中的点-点-斜杠（../）序列，可能允许经过身份验证的管理员通过特制HTTP请求读取webroot同级目录中的文件。
Source: CNNVD (China National Vulnerability Database)
CVSS Information
N/A
Source: CNNVD (China National Vulnerability Database)
Vulnerability Type
N/A
Source: CNNVD (China National Vulnerability Database)

Affected Products

Vendor Product Affected Versions CPE Subscribe
OpenSolution Quick.CMS 0 ~ 6.8.0 -

II. Public POCs for CVE-2026-63303

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III. Intelligence Information for CVE-2026-63303

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Security Blog Posts for CVE-2026-63303 (1)

Vendor Pages for CVE-2026-63303 (1)

Same Patch Batch · OpenSolution · 2026-07-28 · 4 CVEs total

CVE-2026-63301 7.0 HIGH Denial of Service in Quick.CMS
CVE-2026-41874 6.8 MEDIUM Hard-coded admin credentials in Quick.Cart
CVE-2026-63302 5.1 MEDIUM Local File Inclusion in Quick.CMS

IV. Related Vulnerabilities

Same product: Quick.CMS
Same vendor: OpenSolution
Same weakness: CWE-23

V. Comments for CVE-2026-63303

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