What’s Vulnerable › Vulnerabilities

CVE-2026-27964: FacturaScripts: Reflected Cross-Site Scripting (XSS) via Cookie Manipulation

• Severity: low (CVSS 3.9 v3.1)
• Exploited in the wild: not listed in CISA KEV
• EPSS: 0.1% probability of exploitation in the next 30 days
• Public exploit or detection template: none known
• Published: 2026-05-18 · updated 2026-07-24
• Weakness: CWE-79

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 products

• NeoRazorX facturascripts: before 2025.8

References

• https://github.com/NeoRazorX/facturascripts/commit/9066e10326029adf012114e27eb5f3f33f78ecfd
• https://github.com/NeoRazorX/facturascripts/security/advisories/GHSA-gq5c-rw37-g46c
• https://github.com/NeoRazorX/facturascripts/security/advisories/GHSA-gq5c-rw37-g46c

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