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Not in CISA KEV
MEDIUM severity

Reflected cross-site scripting in francoisjacquet/rosariosisGHSA-4cx9-7xqc-2jxm

MEDIUM

GHSA-4cx9-7xqc-2jxm is a medium-severity (CVSS 6.1) Cross-site Scripting (XSS) vulnerability in francoisjacquet/rosariosis. 1 public exploit reference exists, so weaponization risk is real. A fix is available for francoisjacquet/rosariosis — see the affected versions and patch details below.

Also known asCVE-2020-13278
Published
Updated
Affected
1 pkg
Patched
1 / 1
Exploits
1 known
Exploitation data as of Oct 12, 2026 · OSV.dev, NVD, FIRST.org (EPSS)

EPSS Exploitation Probability

via FIRST.org ↗
1.4%probability of exploitation in next 30 days
Lower Risk0.00%
Lower risk than most CVEs72th percentile — riskier than 72% of all scored CVEsHighest risk
0.16%0.75%1.34%1.93%0.7%1.4%Apr 26Aug 26Oct 26

Probability of exploitation in the next 30 days, from FIRST.org EPSS.

How urgent is this, really

GHSA-4cx9-7xqc-2jxm by exploitation likelihood (EPSS) against impact (CVSS). Outside the shaded patch-first corner.

Where this sits among everything scored

Of 385,738 CVEs with a current EPSS score, this one falls in the < 10% band (highlighted). Counts from FIRST.org, log-scaled.

Real-World Exposure

1 pkg affected
🐘francoisjacquet/rosariosis

Real-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

Reflected Cross-Site Scripting vulnerability in Modules.php in RosarioSIS Student Information System < 6.5.1 allows remote attackers to execute arbitrary web script via embedding javascript or HTML tags in a GET request.

Affected Packages

1 total 1 fixed
EcosystemPackageVulnerable rangeFix
🐘Packagistfrancoisjacquet/rosariosisall versions6.5.1composer require francoisjacquet/rosariosis:^6.5.1

Affected Products

1 product · 1 configurations
Application
student information systemrosariosis
< 6.5.1
range
Exploits & PoCs
1

Research use only. For defensive security, authorized penetration testing, and academic research only. Never execute exploit code against systems without explicit written authorization.

Reflected Cross-Site Scripting vulnerability in Modules.php in RosarioSI…

gitlab.comNVDAug 2020

Detection & mitigation playbook

Open-source dependency

  1. Detect

    Scan your dependency tree (package-lock.json, pnpm-lock.yaml, requirements.txt, go.sum, etc.) for francoisjacquet/rosariosis, including transitive dependencies — a direct dependency you never call can still pull in a vulnerable version.

  2. Fix

    Update francoisjacquet/rosariosis to 6.5.1 or later, then make sure no transitive (indirect) dependency still pins the vulnerable range — O3 confirms GHSA-4cx9-7xqc-2jxm is resolved across your whole dependency graph.

  3. Workarounds

    Escape or sanitise the affected output on the server side rather than relying on client-side filtering, and add a Content-Security-Policy that blocks inline script execution so injected markup cannot run even if it reaches the page.

Frequently Asked Questions

Reflected Cross-Site Scripting vulnerability in Modules.php in RosarioSIS Student Information System < 6.5.1 allows remote attackers to execute arbitrary web script via embedding javascript or HTML tags in a GET request.
O3 Security · Impact-Aware SCA

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Reflected cross-site scripting in francoisjacquet/rosariosis