{"id":"CVE-2026-25488","aliases":["GHSA-p6w8-q63m-72c8"],"url":"https://o3.security/vulnerability/CVE-2026-25488","summary":"Craft Commerce has Stored XSS in Tax Categories (Name & Description) Fields Leading to Potential Privilege Escalation","details":"## Summary\n\nA stored XSS vulnerability in Craft Commerce allows attackers to execute malicious JavaScript in an administrator’s browser. This occurs because the Tax Categories (Name & Description) fields in the **Store Management** section are not properly sanitized before being displayed in the admin panel.\n\n---\n## Proof of Concept\n\n### Requirments\n- General permissions:\n\t- Access the control panel\n\t- Access Craft Commerce\n- Craft Commerce permissions:\n\t- Manage store settings\n\t- Manage taxes\n- An active administrator elevated session\n\n### Steps to Reproduce\n1. Log in to the Admin Panel with the attacker account with the permissions mentioned above.\n2. Navigate to **Commerce** -> **Store Management** -> **Tax Categories** (`/admin/commerce/store-management/primary/taxcategories`).\n3. Create a new tax category.\n4. In the **Name** or **Description** field, enter the following payload:\n```html\n<img src=x onerror=\"alert(document.domain)\">\n```\n4. Click **Save** and you'll be redirected back to the previous page.\n5. Notice the alert proving JavaScript execution.\n\n### Privilege Escalation to Administrator:\n1. Do the same steps above, but replace the payload with a malicious one.\n2. The following payload elevates the attacker’s account to Admin if there’s already an elevated session, replace the `<UserID>` with your attacker id:\n```html\n<img src=x onerror=\"fetch('/admin/users/<UserID>/permissions',{method:'POST',body:`CRAFT_CSRF_TOKEN=${Craft.csrfTokenValue}&userId=<UserID>&admin=1&action=users/save-permissions`,headers:{'content-type':'application/x-www-form-urlencoded'}})\">\n```\n\n3. In another browser, log in as an admin & go to the vulnerable page (tax categories page).\n4. Go back to your attacker account & notice you are now an admin.\n\nThe privilege escalation requires an elevated session. In a real-world scenario, an attacker can automate the process by forcing a logout if the victim’s session is stale; upon re-authentication, the stored XSS payload executes within a fresh elevated session to complete the attack.\n\nOr even easier (and smarter), an attacker (using the XSS) can create a fake 'Session Expired' login modal overlay. Since it’s on the trusted domain, administrators will likely enter their credentials, sending them directly to the attacker.\n\n### References:\n\nhttps://github.com/craftcms/commerce/commit/fa273330807807d05b564d37c88654cd772839ee","published":"2026-02-03T18:07:25.106Z","modified":"2026-08-12T03:51:20.772043070Z","cvss":null,"epss":null,"cisaKev":null,"exploitsKnown":0,"affectedPackages":[{"ecosystem":"Packagist","name":"craftcms/commerce","fixedVersion":"5.5.2"},{"ecosystem":"Packagist","name":"craftcms/commerce","fixedVersion":"4.10.1"}],"fix":{"url":"https://github.com/craftcms/commerce/commit/fa273330807807d05b564d37c88654cd772839ee","label":"craftcms/commerce@fa27333"},"references":[{"type":"WEB","url":"https://github.com/craftcms/commerce/releases/tag/4.10.1"},{"type":"WEB","url":"https://github.com/craftcms/commerce/releases/tag/5.5.2"},{"type":"ADVISORY","url":"https://github.com/CVEProject/cvelistV5/tree/main/cves/2026/25xxx/CVE-2026-25488.json"},{"type":"ADVISORY","url":"https://github.com/craftcms/commerce/security/advisories/GHSA-p6w8-q63m-72c8"},{"type":"ADVISORY","url":"https://nvd.nist.gov/vuln/detail/CVE-2026-25488"},{"type":"FIX","url":"https://github.com/craftcms/commerce/commit/fa273330807807d05b564d37c88654cd772839ee"},{"type":"PACKAGE","url":"https://github.com/craftcms/commerce"}],"provenance":{"sources":["OSV.dev","FIRST.org (EPSS)"],"lastVerified":"2026-08-12T03:51:20.772043070Z"}}