Is CVE-2026-42879 actively exploited?

No active exploitation of CVE-2026-42879 has been confirmed so far. Continue monitoring, as exploit status can change.

Can CVE-2026-42879 be exploited remotely?

Yes. CVE-2026-42879 is exploitable remotely over the network (CVSS attack vector: Network).

What is the CVSS score of CVE-2026-42879?

CVE-2026-42879 has a CVSS score of 6.3 (MEDIUM).

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MEDIUM

CVE-2026-42879

CWE-94Published: May 27, 2026· Updated: May 27, 2026

6.3

CVSS v3.1

EPSS:0.04%probability of exploitation in 30 daysPercentile:12.8th

Official Description

FacturaScripts is an open source accounting and invoicing software. In 2025.81 and earlier, an authenticated unrestricted file upload vulnerability exists in FacturaScripts' product image upload functionality. An attacker with valid credentials can upload a PHP file disguised as a GIF image (using a GIF89a header), bypassing MIME type validation. The file is stored with its original extension, including executable extensions such as .php. The vulnerability exists the addImageAction() method of Core/Lib/ExtendedController/ProductImagesTrait.php.

NVD Source

Technical Analysis

CVE-2026-42879 can be exploited remotely over the network without requiring physical or adjacent access, significantly expanding the attack surface for threat actors.

Exploitation requires low privileges, which limits the exposure to scenarios where an attacker has already gained initial access.