GHSA-xj4v-gp4q-h6qq is a medium-severity (CVSS 6.1) Cross-site Scripting (XSS) vulnerability in qcubed/qcubed. 3 public exploit references exist, so weaponization risk is real. A fix is available for qcubed/qcubed — see the affected versions and patch details below.
qcubed reflected cross-site scripting (XSS) vulnerability
EPSS Exploitation Probability
EPSS (Exploit Prediction Scoring System) is a daily probability model maintained by FIRST.org. It estimates the likelihood a CVE will be exploited in production environments within the next 30 days, derived from real-world threat intelligence signals.
How urgent is this, really
GHSA-xj4v-gp4q-h6qq plotted by exploitation likelihood (EPSS) against impact (CVSS). The shaded corner — EPSS 50%+ and CVSS 7.0+ — is where this CVE doesn't sit, though severity or exploitability alone can still warrant action.
Where this sits among everything scored
Of 377,636 CVEs with a current EPSS score, this one falls in the < 10% band (highlighted). Real counts from FIRST.org, not a sample — log-scaled since the landscape is heavily right-skewed.
Real-World Exposure
qcubed/qcubedReal-time download stats are indexed for npm and PyPI packages. This vulnerability affects Packagist packages — download data is not available via public APIs for these ecosystems.
Description
A reflected cross-site scripting (XSS) vulnerability in qcubed (all versions including 3.1.1) in profile.php via the stQuery-parameter allows unauthenticated attackers to steal sessions of authenticated users.
Affected Packages
| Ecosystem | Package | Vulnerable range | Fix |
|---|---|---|---|
| 🐘Packagist | qcubed/qcubed | all versions | 3.2composer require qcubed/qcubed:^3.2 |
Research use only. For defensive security, authorized penetration testing, and academic research only. Never execute exploit code against systems without explicit written authorization.
Detection & mitigation playbook
Open-source dependencyDetect
Scan your dependency tree (package-lock.json, pnpm-lock.yaml, requirements.txt, go.sum, etc.) for qcubed/qcubed, including transitive dependencies — a direct dependency you never call can still pull in a vulnerable version.
Fix
Update qcubed/qcubed to 3.2 or later, then make sure no transitive (indirect) dependency still pins the vulnerable range — O3 confirms GHSA-xj4v-gp4q-h6qq is resolved across your whole dependency graph.
Workarounds
If you can't upgrade right away: gate or disable the affected feature, validate untrusted input at the boundary, and avoid passing attacker-controlled data into the vulnerable path. O3's runtime protection blocks exploitation in production as an interim safeguard until the upgrade lands.
How O3 protects you
O3 Security's impact-aware SCA analyses which vulnerable code paths your application actually calls, so a match like GHSA-xj4v-gp4q-h6qq can be triaged on real exposure rather than presence alone.
Tailored to GHSA-xj4v-gp4q-h6qq. Runtime protection reduces exposure until a permanent patch is applied and verified — it complements patching, it doesn't replace it.
How to detect GHSA-xj4v-gp4q-h6qq
A community-maintained Nuclei template exists for this CVE. You can scan for it directly:
nuclei -id ghsa-xj4v-gp4q-h6qq -u https://target- Template
- QCube Cross-Site-Scripting
- Severity
- medium
- Impact
- Successful exploitation of this vulnerability could allow an attacker to execute malicious scripts in the victim's browser, potentially leading to session hijacking, defacement, or theft of sensitive information.
- Remediation
- Upgrade to the latest version to mitigate this vulnerability.
Template by ProjectDiscovery nuclei-templates (pikpikcu), MIT licensed. View the full template. Scan only systems you are authorised to test.
Frequently Asked Questions
Is GHSA-xj4v-gp4q-h6qq in your dependencies?
O3 Security finds GHSA-xj4v-gp4q-h6qq across Packagist dependencies, including transitive ones, and its impact-aware SCA ranks findings by whether your code actually calls the vulnerable path.