vulnerability / NVI-00008203 / Revision 3
FacturaScripts Vulnerable to Remote Code Execution (RCE) via Zip Slip in Plugin Upload Mechanism
OSV carries this publisher advisory for facturascripts/facturascripts. This is an aggregated source copy; consult the original publisher and compare update dates.
This report has not inspected your inventory, configuration, deployed build, reachability or evidence. A catalog listing and a severity score do not establish exposure or compromise.
01 / Meaning
Why it matters
Published affected context helps an owner decide what evidence to gather. This report has not examined your application.
7.2 HIGH (3.1)
security-advisories@github.com severity; no combined Null risk score.
0.522%
FIRST EPSS model v2026.06.15; exploitation probability over 30 days, percentile 0.44319. Missing scores are unknown.
As of · FIRST EPSS
02 / Applicability
The affected context
Affected versions, configuration prerequisites and known exclusions are public. Confirm each one against the deployed service.
facturascripts/facturascripts
source listedECOSYSTEM: introduced 0; last_affected 2025.71
### Summary A Critical vulnerability exists 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. ### Details 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. ```js // Vulnerable logic in Plugins.php for ($index = 0; $index numFiles; $index++) { $data = $zipFile->statIndex($index); $path = explode('/', $data['name']); if (count($path) > 1) { $folders[$path[0]] = $path[0]; } } ``` An attacker can bypass this check by naming a file `ValidPluginName/../../shell.php`. The explode function will see ValidPluginName as the root folder, satisfying the `count($folders) != 1` check. However, during extraction, the `../../` sequence triggers a path traversal, allowing the file to be written anywhere the web server has permissions t
03 / Response
What to do next
- investigate
Identify the exact component and deployed version, examine the linked publisher’s conditions, and retain evidence of any mitigation.
Confirm current vendor support, compatibility and deployment evidence. This report has not tested a fix in your system. FIRST EPSS
A fixed release is not deployment evidence.
Check current vendor support and compatibility. After making a change, verify the deployed build and relevant runtime conditions. Keep the evidence, owner and time. An updated lockfile alone does not prove what is running.
04 / Limits
What this report cannot establish
- Customer inventory, deployment, reachability and exploitation have not been inspected.
- NVD lastModified does not establish freshness of every associated CPE record.
05 / Provenance
Sources you can inspect
Each assertion retains its source. Mirrored records may repeat one underlying publisher; additional links are not independent corroboration.
- GHSA-3pgc-xqg9-cfr6 ↗
GitHub Advisory Database via OSV · vendor advisory
Observed . GitHub-origin advisory, CC-BY-4.0; OSV is an aggregate copy, not independent corroboration.
- CVE-2026-27891 ↗
NIST National Vulnerability Database · official catalog
Observed . This product uses data from the NVD API but is not endorsed or certified by the NVD.
- CVE-2026-27891 ↗
FIRST EPSS · official catalog
Observed . FIRST EPSS; probability of exploitation in the next 30 days, not local compromise. Dataset date/model retained; FIRST services terms apply.
Public revision history
Only published revisions appear here. Routine fetches do not create a material-change event.
- Revision 3 ·
Source facts changed; compare the preserved prior revision.
- Revision 2 ·
Dated EPSS estimate updated; this is not a new disclosure or proof of exploitation.
- Revision 1 ·
First indexed by Null; source disclosure date is shown separately.