{"id":"CVE-2026-86583","title":"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","summary":"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 ex…","severity":"high","cvss":8.8,"cvssVector":"CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H","cwe":["CWE-266"],"vendor":"carazo","product":"Import and export users and customers","affected":["import_and_export_users_and_customers <= 2.4.17"],"published":"2026-09-23","updated":"2026-09-24","sourceUpdated":"2026-09-24T14:42:02.707","source":"NVD","sourceUrl":"https://nvd.nist.gov/vuln/detail/CVE-2026-86583","references":[{"url":"https://plugins.trac.wordpress.org/browser/import-users-from-csv-with-meta/tags/2.4.17/classes/batch_exporter.php#L459","label":"security@wordfence.com"},{"url":"https://plugins.trac.wordpress.org/browser/import-users-from-csv-with-meta/tags/2.4.17/classes/helper.php#L78","label":"security@wordfence.com"},{"url":"https://plugins.trac.wordpress.org/browser/import-users-from-csv-with-meta/tags/2.4.17/classes/import.php#L1356","label":"security@wordfence.com"},{"url":"https://plugins.trac.wordpress.org/browser/import-users-from-csv-with-meta/tags/2.4.17/classes/import.php#L872","label":"security@wordfence.com"},{"url":"https://plugins.trac.wordpress.org/browser/import-users-from-csv-with-meta/tags/2.4.17/classes/import.php#L888","label":"security@wordfence.com"},{"url":"https://plugins.trac.wordpress.org/changeset/3687349/import-users-from-csv-with-meta","label":"security@wordfence.com"},{"url":"https://www.wordfence.com/threat-intel/vulnerabilities/id/5b0f3444-4c10-45ce-a00b-4ed6038b8846?source=cve","label":"security@wordfence.com"}],"tags":["nvd","cve.org"],"ssvc":{"exploitation":"none","automatable":"no","technicalImpact":"total","timestamp":"2026-09-24T13:22:48.155521Z"},"ingestedAt":"2026-09-23T21:33:13.542Z","epss":0.00333,"epssPercentile":0.24003,"slug":"CVE-2026-86583","body":"## Overview\n\nThe 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\".\n\n## Remediation\n\nRefer to the linked advisories for vendor-supplied fixes and affected version ranges.","depth":"twilight","depthScore":48,"depthScoreParts":{"impact":48.4,"likelihood":0.1,"exploitation":0,"ransomware":0},"changes":[]}