{"dataType":"CVE_RECORD","dataVersion":"5.2","cveMetadata":{"cveId":"CVE-2026-86583","assignerOrgId":"b15e7b5b-3da4-40ae-a43c-f7aa60e62599","state":"PUBLISHED","assignerShortName":"Wordfence","dateReserved":"2026-09-08T06:53:28.117Z","datePublished":"2026-09-23T21:27:34.729Z","dateUpdated":"2026-09-23T21:27:34.729Z"},"containers":{"cna":{"providerMetadata":{"orgId":"b15e7b5b-3da4-40ae-a43c-f7aa60e62599","shortName":"Wordfence","dateUpdated":"2026-09-23T21:27:34.729Z"},"affected":[{"vendor":"carazo","product":"Import and export users and customers","versions":[{"version":"0","status":"affected","lessThanOrEqual":"2.4.17","versionType":"semver"}],"defaultStatus":"unaffected"}],"descriptions":[{"lang":"en","value":"The Import and export users and customers plugin for WordPress is vulnerable to Privilege Escalation in all versions up to, and including, 2.4.17 via the plugin's own export and re-import workflow. The vulnerability exists because the exporter writes CSV cells using fputcsv() with a NUL byte (\\0) as the escape character, while the importer parses the same file using SplFileObject::fgetcsv() with only a single delimiter argument, causing PHP's default backslash escape character to be applied instead; because the export column layout places display_name immediately before the role column and nickname immediately after, an attacker can store crafted values in those two profile fields — saved by WordPress core via the standard profile page — such that the escape mismatch causes the parser to merge the display_name cell into the role field and rebalance the column count via nickname, yielding administrator as the parsed role for their own row when it reaches the import_user function's add_role function. This makes it possible for authenticated attackers with Subscriber-level access or above to escalate their privileges to Administrator. Exploitation requires a site administrator to trigger the plugin's documented export re-import migration with both \"Update existing users\" and \"Update roles for existing users\" set to \"yes\"."}],"title":"Import and export users and customers <= 2.4.17 - Authenticated (Subscriber+) Privilege Escalation via CSV Escape-Character Mismatch in Export/Import Round Trip via display_name and nickname Profile Fields","references":[{"url":"https://www.wordfence.com/threat-intel/vulnerabilities/id/5b0f3444-4c10-45ce-a00b-4ed6038b8846?source=cve"},{"url":"https://plugins.trac.wordpress.org/browser/import-users-from-csv-with-meta/tags/2.4.17/classes/import.php#L888"},{"url":"https://plugins.trac.wordpress.org/browser/import-users-from-csv-with-meta/tags/2.4.17/classes/import.php#L1356"},{"url":"https://plugins.trac.wordpress.org/browser/import-users-from-csv-with-meta/tags/2.4.17/classes/batch_exporter.php#L459"},{"url":"https://plugins.trac.wordpress.org/browser/import-users-from-csv-with-meta/tags/2.4.17/classes/import.php#L872"},{"url":"https://plugins.trac.wordpress.org/browser/import-users-from-csv-with-meta/tags/2.4.17/classes/helper.php#L78"},{"url":"https://plugins.trac.wordpress.org/changeset/3687349/import-users-from-csv-with-meta"}],"problemTypes":[{"descriptions":[{"lang":"en","description":"CWE-266 Incorrect Privilege Assignment","cweId":"CWE-266","type":"CWE"}]}],"metrics":[{"cvssV3_1":{"version":"3.1","vectorString":"CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H","baseScore":8.8,"baseSeverity":"HIGH"}}],"credits":[{"lang":"en","type":"finder","value":"khanhnv"}],"timeline":[{"time":"2026-09-08T07:09:00.000Z","lang":"en","value":"Vendor Notified"},{"time":"2026-09-23T09:27:14.000Z","lang":"en","value":"Disclosed"}]}}}