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CVE-2026-27964

3.9 · LOW

FacturaScripts is an open source accounting and invoicing software.

Published May 18, 2026CWE-79EPSS 0.15%

Overview

CVE-2026-27964 is a low-severity vulnerability. It was published on May 18, 2026 and has a CVSS 3.1 base score of 3.9 (LOW).

This vulnerability has a CVSS 3.1 base score of 3.9, rated LOW. It requires local or adjacent network access to exploit. Some level of privileges is required for exploitation.

Technical 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.

Remediation

Check the references section for vendor advisories, patches, and mitigation guidance. If immediate patching is not possible, review the CVSS vector to understand the attack surface and apply compensating controls such as network segmentation or access restrictions.

References

GitHubgithub.com/NeoRazorX/facturascripts/commit/9066e10326029adf012114e27eb5f3f33f78ecfdGitHubgithub.com/NeoRazorX/facturascripts/security/advisories/GHSA-gq5c-rw37-g46cGitHubgithub.com/NeoRazorX/facturascripts/security/advisories/GHSA-gq5c-rw37-g46c

How CyberStrike helps

Frequently asked questions

What is CVE-2026-27964?

CVE-2026-27964 is a low-severity vulnerability. It was published on May 18, 2026 and has a CVSS 3.1 base score of 3.9 (LOW).

How severe is CVE-2026-27964?

This vulnerability has a CVSS 3.1 base score of 3.9, rated LOW. It requires local or adjacent network access to exploit. Some level of privileges is required for exploitation.

How do I fix or remediate CVE-2026-27964?

Check the references section for vendor advisories, patches, and mitigation guidance. If immediate patching is not possible, review the CVSS vector to understand the attack surface and apply compensating controls such as network segmentation or access restrictions.

How can CyberStrike help with CVE-2026-27964?

CyberStrike is an open-source, AI-augmented pentesting engine. Rather than flag a version number, it tests whether an issue like CVE-2026-27964 is actually reachable in your own applications and APIs, then verifies each finding before reporting it. That tells you if the weakness is a real, exploitable risk in your environment or a false positive you can safely deprioritize.

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