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CVE-2026-27891— Remote Code Execution (RCE) via Zip Slip in Plugin Upload Mechanism

Quick assessment

Affected
NeoRazorX facturascripts
Exploitation
Public or AI PoC available; prioritize validation
Recommended action
Check the vendor advisory and references for a fixed version. If immediate upgrade is impossible, restrict exposure and increase monitoring.

FacturaScripts是西班牙Carlos Garcia个人开发者的一个开源 ERP 软件。 FacturaScripts 2026及之前版本存在输入验证错误漏洞，该漏洞源于Plugins::add函数未正确验证ZIP存档中的文件路径，可能导致Zip Slip攻击导致任意文件写入和远程代码执行。

CVSS 7.2 · High EPSS 0.87% · P57

Affected Version Matrix 1

VendorProduct Version RangeStatus
NeoRazorX facturascripts < 2026.1 affected
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I. Basic Information for CVE-2026-27891

Vulnerability Information
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Vulnerability Title
Remote Code Execution (RCE) via Zip Slip in Plugin Upload Mechanism
Source: CVE Program / CVE List V5
Vulnerability Description
FacturaScripts is an open source accounting and invoicing software. Versions 2026 and below contain a critical vulnerability in the Plugins::add() function. The system fails to properly validate the file paths within uploaded ZIP archives. This allows an attacker to perform a Zip Slip attack, leading to Arbitrary File Write and Remote Code Execution (RCE) by overwriting sensitive .php files outside the designated plugins directory. The vulnerability is located in Plugins.php. While the testZipFile function attempts to validate that the ZIP contains only one root folder, it does not sanitize or validate the individual file paths within that folder. An attacker can bypass this check by naming a file ValidPluginName/../../shell.php. The explode function will see ValidPluginName as the root folder, satisfying the count($folders) != 1 check. However, during extraction, the ../../ sequence triggers a path traversal, allowing the file to be written anywhere the web server has permissions the root directory. This issue is fixed in version 2026.1.
Source: CVE Program / CVE List V5
CVSS Information
CVSS:3.1/AV:N/AC:L/PR:H/UI:N/S:U/C:H/I:H/A:H
Source: CVE Program / CVE List V5
Vulnerability Type
输入验证不恰当
Source: CVE Program / CVE List V5
Vulnerability Title
FacturaScripts 输入验证错误漏洞
Source: CNNVD (China National Vulnerability Database)
Vulnerability Description
FacturaScripts是西班牙Carlos Garcia个人开发者的一个开源 ERP 软件。 FacturaScripts 2026及之前版本存在输入验证错误漏洞，该漏洞源于Plugins::add函数未正确验证ZIP存档中的文件路径，可能导致Zip Slip攻击导致任意文件写入和远程代码执行。
Source: CNNVD (China National Vulnerability Database)
CVSS Information
N/A
Source: CNNVD (China National Vulnerability Database)
Vulnerability Type
N/A
Source: CNNVD (China National Vulnerability Database)

Affected Products

Vendor Product Affected Versions CPE Subscribe
NeoRazorX facturascripts < 2026.1 -

II. Public POCs for CVE-2026-27891

# POC Description Source Link Shenlong Link
AI-Generated POC Premium
Qwen3.6-35B-A3B · 10132 chars
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In-depth vulnerability mechanism
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III. Intelligence Information for CVE-2026-27891

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Patches & Fixes for CVE-2026-27891 (1)

Vendor Advisories for CVE-2026-27891 (1)

Same Patch Batch · NeoRazorX · 2026-05-18 · 3 CVEs total

CVE-2026-27892 6.5 MEDIUM FacturaScripts: Unstripped Image Metadata (EXIF) Leakage via Library Module File Upload/Do
CVE-2026-27964 3.9 LOW FacturaScripts: Reflected Cross-Site Scripting (XSS) via Cookie Manipulation

IV. Related Vulnerabilities

Same product: facturascripts
Same vendor: NeoRazorX
Same weakness: CWE-20

V. Comments for CVE-2026-27891

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