GHSA-W9F3-QC75-QGX9

Vulnerability from github – Published: 2026-05-08 16:54 – Updated: 2026-05-08 16:54
VLAI?
Summary
PrestaShop has a stored XSS executable in customer service view
Details

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.
Show details on source website

{
  "affected": [
    {
      "package": {
        "ecosystem": "Packagist",
        "name": "prestashop/prestashop"
      },
      "ranges": [
        {
          "events": [
            {
              "introduced": "0"
            },
            {
              "fixed": "8.2.6"
            }
          ],
          "type": "ECOSYSTEM"
        }
      ]
    },
    {
      "package": {
        "ecosystem": "Packagist",
        "name": "prestashop/prestashop"
      },
      "ranges": [
        {
          "events": [
            {
              "introduced": "9.0.0"
            },
            {
              "fixed": "9.1.1"
            }
          ],
          "type": "ECOSYSTEM"
        }
      ]
    }
  ],
  "aliases": [
    "CVE-2026-44212"
  ],
  "database_specific": {
    "cwe_ids": [
      "CWE-79"
    ],
    "github_reviewed": true,
    "github_reviewed_at": "2026-05-08T16:54:22Z",
    "nvd_published_at": null,
    "severity": "CRITICAL"
  },
  "details": "### Impact\n\nThis is a **stored Cross-site Scripting (XSS)** vulnerability in the PrestaShop back-office Customer Service view.\n\nAn 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.\n\n### Patches\n\nPatched in PrestaShop 8.2.6 and 9.1.1.\n\n### Workarounds\n\nNone.\n\n### Resources\n\n- Reported by Savio at Doyensec (`anthropic@doyensec.com`) in collaboration with Anthropic Research.",
  "id": "GHSA-w9f3-qc75-qgx9",
  "modified": "2026-05-08T16:54:22Z",
  "published": "2026-05-08T16:54:22Z",
  "references": [
    {
      "type": "WEB",
      "url": "https://github.com/PrestaShop/PrestaShop/security/advisories/GHSA-w9f3-qc75-qgx9"
    },
    {
      "type": "PACKAGE",
      "url": "https://github.com/PrestaShop/PrestaShop"
    }
  ],
  "schema_version": "1.4.0",
  "severity": [
    {
      "score": "CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:C/C:H/I:H/A:N",
      "type": "CVSS_V3"
    }
  ],
  "summary": "PrestaShop has a stored XSS executable in customer service view"
}


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Forecast uses a logistic model when the trend is rising, or an exponential decay model when the trend is falling. Fitted via linearized least squares.

Sightings

Author Source Type Date Other

Nomenclature

  • Seen: The vulnerability was mentioned, discussed, or observed by the user.
  • Confirmed: The vulnerability has been validated from an analyst's perspective.
  • Published Proof of Concept: A public proof of concept is available for this vulnerability.
  • Exploited: The vulnerability was observed as exploited by the user who reported the sighting.
  • Patched: The vulnerability was observed as successfully patched by the user who reported the sighting.
  • Not exploited: The vulnerability was not observed as exploited by the user who reported the sighting.
  • Not confirmed: The user expressed doubt about the validity of the vulnerability.
  • Not patched: The vulnerability was not observed as successfully patched by the user who reported the sighting.


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