CVE-2017-20288

medium

QCubed 2.2.0 through 3.1.1 contains a reflected cross-site scripting vulnerability that allows unauthenticated attackers to inject scripts through the installa…

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.

CVSS

6.1

6.1 (CVSS v3.1)

CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:C/C:L/I:L/A:N

Severity source: NVD CVSS v3.1 (disclosure@vulncheck.com)

Timeline (UTC)

Published: 2026-10-22 11:17

Modified: 2026-10-22 17:40

NVD status: Deferred

Last synced 1 day ago

Verified against the source API 2026-10-27 07:05 UTC

Exploitation

Not listed in CISA KEV (as of last catalog sync)

Absence from KEV does not mean a CVE is not exploited. Exploitation status: unknown (no authoritative evidence in our sources).

Affected products

Not reported by the source (unknown — not "none").

Weakness classification (CWE)

CWE-79

Source: NVD / CISA. “NVD-CWE-Other” and “NVD-CWE-noinfo” mean NVD could not assign a specific weakness.

Mitigation & advisories

No vendor advisory or patch reference tagged by NVD. Check the references below.

References

https://github.com/projectdiscovery/nuclei-templates/blob/main/http/vulnerabilities/other/... disclosure@vulncheck.com
https://github.com/qcubed/qcubed/issues/1230 disclosure@vulncheck.com
https://www.vulncheck.com/advisories/qcubed-3.1.1-reflected-xss-via-installer-step-2-php disclosure@vulncheck.com

Data sources

NVD CVE API 2.0 — fetched 2026-10-27 07:05 UTC · record ↗

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