Vulnerability · Published May 18, 2026 · Assigned by GitHub_M
CVE-2026-27964FacturaScripts: Reflected Cross-Site Scripting (XSS) via Cookie Manipulation
Low 3.9
In plain English
A low-severity cross-site scripting in facturascripts from NeoRazorX. Proof-of-concept exploit code is public. The chance it is exploited in the next 30 days is estimated at 0.1% (higher than 1% of all known vulnerabilities). Fixed versions are available - upgrade the affected package.
Official description
FacturaScripts is an open source accounting and invoicing software. Versions 2025.7 and prior contain a Reflected Cross-Site Scripting (XSS) vulnerability through the fsNick cookie parameter. The application reflects the cookie's value directly into the HTML without sanitization. The fsNick cookie is rendered into the DOM without encoding. While the server does reject the modified session and forces a logout, the HTML containing the payload reaches the browser first. This lets the script execute immediately upon load, effectively beating the redirect. This issue has been fixed in version 2025.8.
Affected packages & fixed versions
| Ecosystem | Package | Fixed in | Advisory |
|---|---|---|---|
| Packagist | facturascripts/facturascripts | 2025.8 | GHSA-gq5c-rw37-g46c |
| Packagist | facturascripts/facturascripts | 2025.81 | GHSA-gq5c-rw37-g46c |
Affected products (as reported)
| Vendor | Product | Versions |
|---|---|---|
| NeoRazorX | facturascripts | < 2025.8 |
Weakness: CWE-79 · Vector: CVSS:3.1/AV:L/AC:L/PR:L/UI:R/S:U/C:L/I:L/A:N