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Critical, CVSS 9.3

PrestaShop has a stored XSS executable in customer service view

CVE-2026-44212GHSA-w9f3-qc75-qgx9

What to do

Vendor fix available. Upgrade each affected package to the fixed version on its release line (prestashop/prestashop 9.1.1, 8.2.6), redeploy, then verify what is actually installed.

This page has no inventory attached, so it cannot say whether you are affected. A vendor fix is not proof that your deployment is fixed.

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Affected packages

Sources

Severity and exploitation
Exploitation
No confirmed exploitation recorded. Patch Next marks exploitation only from CISA KEV.
CVSS
9.3 · CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:C/C:H/I:H/A:N
EPSS
  • CVE-2026-44212: 0.43% estimated exploitation activity in the next 30 days; percentile 36.80 (FIRST EPSS, 2026-11-03). This is a model estimate, not proof of exploitation or customer exposure.
Source description

As published by the source; long descriptions are shortened.

Impact This is a stored Cross-site Scripting (XSS) vulnerability in the PrestaShop back-office Customer Service view. An unauthenticated attacker can submit the public Contact Us form with a malicious email address. The payload is stored in the database and executed when a back-office employee opens the affected customer thread, enabling session hijacking and full back-office takeover. Patches Patched in PrestaShop 8.2.6 and 9.1.1. Workarounds None. Resources - Reported by Savio at Doyensec (anthropic@doyensec.com) in collaboration with Anthropic Research.

Dates and revisions
Published by the source
Last modified by the source
Source last checked
  1. Revision 1 · created ·

    Published from ghsa record GHSA-w9f3-qc75-qgx9

Agent brief

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# Patch Next advisory brief: CVE-2026-44212

Advisory: PrestaShop has a stored XSS executable in customer service view
IDs: CVE-2026-44212, GHSA-w9f3-qc75-qgx9
Record: https://patchnext.com/advisories/cve-2026-44212 (revision 1, source checked 26 Oct 2026, 14:40 UTC)
Inventory: none attached. This brief comes from a public page and does not say whether any deployment is affected.
Severity: Critical (CVSS 9.3)
Exploitation: no confirmed exploitation recorded. Patch Next confirms exploitation only from CISA KEV.
Vendor response: Vendor fix available; fixed versions by package: prestashop/prestashop 9.1.1, 8.2.6. A vendor fix does not mean a deployment is fixed.

## Affected components
- Packagist prestashop/prestashop: affected < 8.2.6; >= 9.0.0, < 9.1.1; fixed in 9.1.1, 8.2.6

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

## Supported action
Upgrade each affected component to a fixed version on its release line. For a transitive dependency, upgrade the parent package or add an override or constraint, then regenerate the lockfile. Redeploy every environment that ran an affected version.

## Required regression checks
- Run the test suite and a production build.
- Exercise the features that depend on prestashop/prestashop.
- 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-w9f3-qc75-qgx9 (GitHub-reviewed advisory GHSA-w9f3-qc75-qgx9 lists affected ranges: Packagist prestashop/prestashop >=0 =9.0.0 <9.1.1)

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