FacturaScripts: Stored XSS in WidgetVariante and WidgetSubcuenta modal lists via HTML-attribute decoding of Tools::noHtml-escaped quotes inside onclick=

Exploitation

No confirmed exploitation recorded. Patch Next marks exploitation only from CISA KEV.

CVSS

3.5 · CVSS:3.1/AV:N/AC:L/PR:H/UI:R/S:U/C:L/I:L/A:N

EPSS

No dated EPSS signal available.

As published by the source; long descriptions are shortened.

Summary WidgetVariante::renderVariantList (Core/Lib/Widget/WidgetVariante.php:298-330) and WidgetSubcuenta::renderSubaccountList (Core/Lib/Widget/WidgetSubcuenta.php:290-321) build the <tr onclick="..." row for each modal hit by concatenating the user-controlled referencia / codsubcuenta field directly into a single-quoted JavaScript string literal inside an HTML onclick attribute. The defender's intuition is that Tools::noHtml (called in Variante::test() and Subcuenta::test()) replaces ' with the HTML entity &#39;, neutralising the JavaScript string break. The intuition is wrong: HTML attribute parsing decodes character references before the JavaScript fragment is parsed, so &#39; becomes a literal ' in the JavaScript context. An attacker who can store a value such as 1',alert(1),'2 in Variante.referencia (no special characters required, just one apostrophe) ends up with widgetVarianteSelect('id', '1',alert(1),'2'); executing in any user's browser the moment they open the…

Published by the source

14 Jul 2026, 17:30 UTC

Last modified by the source

14 Jul 2026, 17:30 UTC

Source last checked

26 Oct 2026, 14:50 UTC

1. Revision 1 · created · 26 Oct 2026

   Published from ghsa record GHSA-3x7p-v8hj-xh5m

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# Patch Next advisory brief: CVE-2026-45710

Advisory: FacturaScripts: Stored XSS in WidgetVariante and WidgetSubcuenta modal lists via HTML-attribute decoding of `Tools::noHtml`-escaped quotes inside `onclick=`
IDs: CVE-2026-45710, GHSA-3x7p-v8hj-xh5m
Record: https://patchnext.com/advisories/cve-2026-45710 (revision 1, source checked 26 Oct 2026, 14:50 UTC)
Inventory: none attached. This brief comes from a public page and does not say whether any deployment is affected.
Severity: Low (CVSS 3.5)
Exploitation: no confirmed exploitation recorded. Patch Next confirms exploitation only from CISA KEV.
Vendor response: Vendor response not established. A vendor fix does not mean a deployment is fixed.

## Affected components
- Packagist facturascripts/facturascripts: affected <= 2026.1

## Suggested inspection (read-only)
- Packagist facturascripts/facturascripts: check the installed version with your package manager.

## Supported action
No complete vendor fix is recorded. Follow the primary source's mitigation guidance and check this record again before closing anything.

## Required regression checks
- Run the test suite and a production build.
- Exercise the features that depend on facturascripts/facturascripts.
- Repeat the inspection and confirm that only fixed versions remain installed.

## Rollback considerations
- Keep the previous lockfile and deployment artifact. Rolling back reinstates the vulnerable version, so apply any documented mitigation while you fix forward.

## Unresolved questions
- Which deployments run an affected version?
- Exploitation status can change. Check again before lowering the priority.
- Mark the work resolved only after the fixed version is verified in production.

## Sources
- Verified: https://github.com/advisories/GHSA-3x7p-v8hj-xh5m (GitHub-reviewed advisory GHSA-3x7p-v8hj-xh5m lists affected ranges: Packagist facturascripts/facturascripts >=0 <=2026.1)

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