TI-2026-45149 Aliases CVE-2026-63303 GHSA-5wcv-j62r-8fp5

Path Traversal in Quick.CMS

LOW 24CWE-23Published 2026-07-28 · Updated 2026-07-28

Key facts

Attack vector: Network
Privileges required: High
User interaction: None
Attack complexity: Low
Attack requirements: None
Impact type: —
Confidentiality · integrity · availability: None · None · None
Fix status: No fix listed

Attack profile from CVSS 4.0 · CNA. Fix status from CNA.

Summary

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.

Why it matters now

Exploitation None reported CISA SSVC · not in CISA KEV

EPSS 0.00574 47th percentileScored 2026-11-07

Fix No fix listed No fixed version in the sources yet

SSVC decision points

CISA ADP · SSVC 2.0.3

Exploitation: None
Automatable: No
Technical impact: Partial

The decision (Track, Attend, Act) also depends on your mission and well-being impact; see CISA's SSVC guide.

Affected products

Vendor	Product	Affected versions	Fixed in	Status	Source
OpenSolution	Quick.CMS	up to 6.8.0	—	No fix listed	CNA

Quick.CMS VendorOpenSolution Affected up to 6.8.0 Fixed in — No fix listed CNA

Remediation

No fixed version listed by the sources yet.

Timeline

2026-10-02 Threatist record created from CVE-2026-63303
2026-10-03 Alias added: GHSA-5wcv-j62r-8fp5

References

Advisory 1

https://cert.pl/en/posts/2026/07/CVE-2026-63301

Other 1

https://opensolution.org/

TI-2024-38405 Quick.CMS 6.7 SQL Injection Authentication Bypass via Admin Login CVSS 4.0CRITICAL 9.3
TI-2023-23205 Cross-site scripting (XSS) vulnerability in opensolution Quick CMS v.6.7 allows a local… CVSS 3.1HIGH 8.6
TI-2023-23206 Cross-site scripting (XSS) vulnerability in opensolution Quick CMS v.6.7 allows a local… CVSS 3.1MEDIUM 5.4
TI-2023-23204 Cross-site scripting (XSS) vulnerability in opensolution Quick CMS v.6.7 allows a local… CVSS 3.1MEDIUM 5.4
TI-2023-23203 Cross-site scripting (XSS) vulnerability in opensolution Quick CMS v.6.7 allows a local… CVSS 3.1MEDIUM 5.4
TI-2023-23202 Cross-site scripting (XSS) vulnerability in opensolution Quick CMS v.6.7 allows a local… CVSS 3.1MEDIUM 5.4

See all 46 →

Sources

This product uses the NVD API but is not endorsed or certified by the NVD. Sources and licences