Vulnerability Report

CVE-2026-42879

RCE

Title: FacturaScripts Authenticated Unrestricted File Upload RCE

RCE

Proof Of Concept

PoC Available for CVE-2026-42879

CWE Category CWE-94

Published Date May 27, 2026

Modified Date May 27, 2026

Exploit Status Available

Score 6.3 CVSS v3.1

Exploit Probability (EPSS)

0.23%

Vulnerability Summary

CVE-2026-42879: 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.

Impacted Vendors

Analysis in Progress...

Reference Links

https://github.com/NeoRazorX/facturascripts/security/advisories/GHSA-vf3q-frmr-vrr9

CVSS v3.1

Source Entity [email protected]

Severity MEDIUM

6.3

Attack Vector

NETWORK

Complexity

LOW

Privileges

N/A

Interaction

NONE

Confidentiality

N/A

Integrity

N/A

Availability

N/A

Scope

UNCHANGED

RAW VECTOR CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:L/I:L/A:L

Associated Attack Patterns (CAPEC)

Total: Patterns

CVE-2026-42879 Exploits & PoCs (Proof Of Concept)

GitHub https://github.com/guzrex/CVE-2026-42879

View Code

May 27, 2026 MODIFIED

Vulnerability data updated via NVD.

Attack Vector Matrix

Access Vector NETWORK

Complexity LOW

Privileges N/A

Interaction NONE

CVSS Vector String


                                    CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:L/I:L/A:L

Affected Stack

No specific products linked.