CVE-2017-20288 (GCVE-0-2017-20288)

Vulnerability from cvelistv5 – Published: 2026-10-22 10:57 – Updated: 2026-10-22 10:57 X_Known Exploited Vulnerability
VLAI Previdian
Title
QCubed 3.1.1 Reflected XSS via installer step_2.php
Summary
QCubed 2.2.0 through 3.1.1 contains a reflected cross-site scripting vulnerability that allows unauthenticated attackers to inject scripts through the installation_path parameter. Attackers can craft GET requests to /assets/php/_devtools/installer/step_2.php with malicious installation_path values echoed unescaped, executing JavaScript in victims' browsers. Exploitation evidence was first observed by the Shadowserver Foundation on 2023-10-20.
Severity
5.1 (Medium)
CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:A/VC:N/VI:N/VA:N/SC:L/SI:L/SA:N
6.1 (Medium)
CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:C/C:L/I:L/A:N
CWE
  • CWE-79 - Improper Neutralization of Input During Web Page Generation ('Cross-site Scripting')
Assigner
VulnCheck CNA under the mitre root
CNA scorecard B 84/100 over 6753 records in the last 180 days details
References
Impacted products
Vendor Product Version CPE status
QCubed QCubed Affected: 2.2.0 , ≤ 3.1.1 (custom)
    cpe:2.3:a:qcubed:qcubed:*:*:*:*:*:*:*:*
Create a notification for this product.
Date Public
2017-03-24 00:00
Credits
ADLab of Venustech The Shadowserver Foundation
Previdian
Known Exploited Vulnerability - GCVE BCP-07 Compliant
KEV entry ID: 57d0fb6b-4fe5-489c-a400-4029c2b191ac

Vulnerability ID: CVE-2017-20288

Status: Confirmed

Status Updated: 2026-10-22 11:10 UTC

Exploited: Yes

Timestamps
First Seen: 2026-10-22
Asserted: 2026-10-22
Scope
Notes: QCubed 3.1.1 Reflected XSS via installer step_2.php | Affected: QCubed / QCubed | CVSS: 5.1 (MEDIUM) | Used in malware: unknown | Not yet in CISA KEV: True
Evidence

Type: Public Report

Signal: Successful Exploitation

Confidence: 70%

Source: previdian

Details
Feed Previdian (previdian.com)
Title QCubed 3.1.1 Reflected XSS via installer step_2.php
Cve Id CVE-2017-20288
Vendor QCubed
Ghsa Id None
Product QCubed
Added Date 2026-10-22T11:10:50.027Z
Cvss Score 5.1
Epss Score None
Previous Ids
Cvss Severity MEDIUM
Virtual Patch False
Cvss Estimated False
Epss Percentile None
Used In Malware unknown
Vulnerability Id CVE-2017-20288
Ahead Of Cisa Kev None
Not Yet In Cisa Kev True
References
Created: 2026-10-23 12:00 UTC | Updated: 2026-10-23 12:00 UTC
Show details on NVD website
To clipboard 

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}



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