{"schemaVersion":3,"id":"CVE-2026-13443","aliases":[],"status":"published","duplicateOf":null,"title":null,"description":"The Tutor LMS – eLearning and online course solution plugin for WordPress is vulnerable to Stored Cross-Site Scripting via Lesson Attachment Title in all versions up to, and including, 3.9.13 due to insufficient input sanitization and output escaping. This makes it possible for authenticated attackers, with author-level access and above, to inject arbitrary web scripts in pages that will execute whenever a user accesses an injected page.","dates":{"published":"2026-07-01T03:43:35.748Z","modified":"2026-07-01T10:32:06.393Z","reserved":null,"kevAdded":[],"kevDue":[]},"cvss":{"headline":{"score":6.4,"severity":"medium","version":"3.1","versionLabel":"v3.1","source":"CVE.org","vector":"CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:C/C:L/I:L/A:N","computed":false,"selection":"backend-summary"},"metrics":[{"version":"3.1","versionLabel":"v3.1","source":"CVE.org","score":6.4,"severity":"medium","vector":"CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:C/C:L/I:L/A:N","exploitability":null,"impact":null,"computed":false},{"version":"3.1","versionLabel":"v3.1","source":"NVD","score":6.4,"severity":"medium","vector":"CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:C/C:L/I:L/A:N","exploitability":null,"impact":null,"computed":false},{"version":"3.1","versionLabel":"v3.1","source":"wordfence","score":6.4,"severity":"medium","vector":"CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:C/C:L/I:L/A:N","exploitability":null,"impact":null,"computed":false}]},"epss":{"probability":0.00357,"percentile":0.27999,"severity":"low","asOf":"2026-10-20T00:00:00.000Z","change":{"pp":0,"baselineDate":"2026-09-20T00:00:00.000Z","baselineScore":0.00357},"history":[{"date":"2026-09-14T00:00:00.000Z","score":0.00357,"percentile":null},{"date":"2026-09-15T00:00:00.000Z","score":0.00357,"percentile":null},{"date":"2026-09-16T00:00:00.000Z","score":0.00357,"percentile":null},{"date":"2026-09-17T00:00:00.000Z","score":0.00357,"percentile":null},{"date":"2026-09-18T00:00:00.000Z","score":0.00357,"percentile":null},{"date":"2026-09-19T00:00:00.000Z","score":0.00357,"percentile":null},{"date":"2026-09-20T00:00:00.000Z","score":0.00357,"percentile":null},{"date":"2026-09-21T00:00:00.000Z","score":0.00357,"percentile":null},{"date":"2026-09-22T00:00:00.000Z","score":0.00357,"percentile":null},{"date":"2026-09-23T00:00:00.000Z","score":0.00357,"percentile":null},{"date":"2026-09-24T00:00:00.000Z","score":0.00357,"percentile":null},{"date":"2026-09-25T00:00:00.000Z","score":0.00357,"percentile":null},{"date":"2026-09-26T00:00:00.000Z","score":0.00357,"percentile":null},{"date":"2026-09-27T00:00:00.000Z","score":0.00357,"percentile":null},{"date":"2026-09-28T00:00:00.000Z","score":0.00357,"percentile":null},{"date":"2026-09-29T00:00:00.000Z","score":0.00357,"percentile":null},{"date":"2026-09-30T00:00:00.000Z","score":0.00357,"percentile":null},{"date":"2026-10-01T00:00:00.000Z","score":0.00357,"percentile":null},{"date":"2026-10-02T00:00:00.000Z","score":0.00357,"percentile":null},{"date":"2026-10-03T00:00:00.000Z","score":0.00357,"percentile":null},{"date":"2026-10-04T00:00:00.000Z","score":0.00357,"percentile":null},{"date":"2026-10-05T00:00:00.000Z","score":0.00357,"percentile":null},{"date":"2026-10-06T00:00:00.000Z","score":0.00357,"percentile":null},{"date":"2026-10-07T00:00:00.000Z","score":0.00357,"percentile":null},{"date":"2026-10-08T00:00:00.000Z","score":0.00357,"percentile":null},{"date":"2026-10-09T00:00:00.000Z","score":0.00357,"percentile":null},{"date":"2026-10-10T00:00:00.000Z","score":0.00357,"percentile":null},{"date":"2026-10-11T00:00:00.000Z","score":0.00357,"percentile":null},{"date":"2026-10-12T00:00:00.000Z","score":0.00357,"percentile":null},{"date":"2026-10-13T00:00:00.000Z","score":0.00357,"percentile":null},{"date":"2026-10-14T00:00:00.000Z","score":0.00357,"percentile":null},{"date":"2026-10-15T00:00:00.000Z","score":0.00357,"percentile":null},{"date":"2026-10-16T00:00:00.000Z","score":0.00357,"percentile":null},{"date":"2026-10-17T00:00:00.000Z","score":0.00357,"percentile":null},{"date":"2026-10-18T00:00:00.000Z","score":0.00357,"percentile":null},{"date":"2026-10-19T00:00:00.000Z","score":0.00357,"percentile":null},{"date":"2026-10-20T00:00:00.000Z","score":0.00357,"percentile":0.27999}],"last30":[{"date":"2026-09-20T00:00:00.000Z","score":0.00357,"percentile":null},{"date":"2026-09-21T00:00:00.000Z","score":0.00357,"percentile":null},{"date":"2026-09-22T00:00:00.000Z","score":0.00357,"percentile":null},{"date":"2026-09-23T00:00:00.000Z","score":0.00357,"percentile":null},{"date":"2026-09-24T00:00:00.000Z","score":0.00357,"percentile":null},{"date":"2026-09-25T00:00:00.000Z","score":0.00357,"percentile":null},{"date":"2026-09-26T00:00:00.000Z","score":0.00357,"percentile":null},{"date":"2026-09-27T00:00:00.000Z","score":0.00357,"percentile":null},{"date":"2026-09-28T00:00:00.000Z","score":0.00357,"percentile":null},{"date":"2026-09-29T00:00:00.000Z","score":0.00357,"percentile":null},{"date":"2026-09-30T00:00:00.000Z","score":0.00357,"percentile":null},{"date":"2026-10-01T00:00:00.000Z","score":0.00357,"percentile":null},{"date":"2026-10-02T00:00:00.000Z","score":0.00357,"percentile":null},{"date":"2026-10-03T00:00:00.000Z","score":0.00357,"percentile":null},{"date":"2026-10-04T00:00:00.000Z","score":0.00357,"percentile":null},{"date":"2026-10-05T00:00:00.000Z","score":0.00357,"percentile":null},{"date":"2026-10-06T00:00:00.000Z","score":0.00357,"percentile":null},{"date":"2026-10-07T00:00:00.000Z","score":0.00357,"percentile":null},{"date":"2026-10-08T00:00:00.000Z","score":0.00357,"percentile":null},{"date":"2026-10-09T00:00:00.000Z","score":0.00357,"percentile":null},{"date":"2026-10-10T00:00:00.000Z","score":0.00357,"percentile":null},{"date":"2026-10-11T00:00:00.000Z","score":0.00357,"percentile":null},{"date":"2026-10-12T00:00:00.000Z","score":0.00357,"percentile":null},{"date":"2026-10-13T00:00:00.000Z","score":0.00357,"percentile":null},{"date":"2026-10-14T00:00:00.000Z","score":0.00357,"percentile":null},{"date":"2026-10-15T00:00:00.000Z","score":0.00357,"percentile":null},{"date":"2026-10-16T00:00:00.000Z","score":0.00357,"percentile":null},{"date":"2026-10-17T00:00:00.000Z","score":0.00357,"percentile":null},{"date":"2026-10-18T00:00:00.000Z","score":0.00357,"percentile":null},{"date":"2026-10-19T00:00:00.000Z","score":0.00357,"percentile":null},{"date":"2026-10-20T00:00:00.000Z","score":0.00357,"percentile":0.27999}]},"kev":{"state":"not-listed","entries":[],"listedCount":0,"totalCatalogs":3,"catalogs":[{"source":"cisa","label":"CISA","listed":false,"entry":null},{"source":"enisa","label":"ENISA","listed":false,"entry":null},{"source":"circl","label":"CIRCL","listed":false,"entry":null}]},"ransomware":{"state":"none-recorded","sources":[]},"exploits":[],"exploitCount":0,"weaknesses":[{"id":"CWE-79","name":"Improper Neutralization of Input During Web Page Generation ('Cross-site Scripting')","description":"The product does not neutralize or incorrectly neutralizes user-controllable input before it is placed in output that is used as a web page that is served to other users.","type":"weakness","status":"Stable","abstraction":"Base","likelihoodOfExploit":"High","url":"https://cwe.mitre.org/data/definitions/79.html"}],"affected":[{"vendor":"themeum","product":"tutor lms – elearning and online course solution","name":"Tutor LMS – eLearning and online course solution","label":"tutor lms – elearning and online course solution","ecosystem":null,"cpePart":"a","purl":null,"purlType":null,"versions":[{"text":"≤ 3.9.13","noFixRecorded":false,"fixedIn":null}],"versionsText":"≤ 3.9.13","eol":null,"hubHref":"/vendor/themeum/tutor_lms_-_elearning_and_online_course_solution"},{"vendor":"wordpress","product":"tutor","name":"Tutor LMS – eLearning and online course solution","label":"tutor","ecosystem":null,"cpePart":"a","purl":null,"purlType":null,"versions":[{"text":"≤ 3.9.13 (fixed in 3.9.14)","noFixRecorded":false,"fixedIn":"3.9.14"}],"versionsText":"≤ 3.9.13 (fixed in 3.9.14)","eol":null,"hubHref":null}],"affectedCount":2,"eol":{"hasEol":false,"count":0},"references":[{"url":"https://www.wordfence.com/threat-intel/vulnerabilities/id/7483762c-5356-4844-90a9-511d9ec48625?source=cve","label":"www.wordfence.com/threat-intel/vulnerabilities/id/7483762c-5356-4844-90a9-511d9ec48625?source=cve","hostname":"www.wordfence.com","tags":[]},{"url":"https://plugins.trac.wordpress.org/browser/tutor/tags/3.9.13/templates/global/attachments.php#L34","label":"plugins.trac.wordpress.org/browser/tutor/tags/3.9.13/templates/global/attachments.php","hostname":"plugins.trac.wordpress.org","tags":[]},{"url":"https://plugins.trac.wordpress.org/browser/tutor/tags/3.9.13/classes/Utils.php#L1720","label":"plugins.trac.wordpress.org/browser/tutor/tags/3.9.13/classes/Utils.php","hostname":"plugins.trac.wordpress.org","tags":[]},{"url":"https://plugins.trac.wordpress.org/browser/tutor/tags/3.9.13/classes/Utils.php#L1688","label":"plugins.trac.wordpress.org/browser/tutor/tags/3.9.13/classes/Utils.php","hostname":"plugins.trac.wordpress.org","tags":[]},{"url":"https://plugins.trac.wordpress.org/browser/tutor/tags/3.9.9/templates/global/attachments.php#L34","label":"plugins.trac.wordpress.org/browser/tutor/tags/3.9.9/templates/global/attachments.php","hostname":"plugins.trac.wordpress.org","tags":[]},{"url":"https://plugins.trac.wordpress.org/browser/tutor/tags/3.9.9/classes/Utils.php#L1720","label":"plugins.trac.wordpress.org/browser/tutor/tags/3.9.9/classes/Utils.php","hostname":"plugins.trac.wordpress.org","tags":[]},{"url":"https://plugins.trac.wordpress.org/browser/tutor/tags/3.9.9/classes/Utils.php#L1688","label":"plugins.trac.wordpress.org/browser/tutor/tags/3.9.9/classes/Utils.php","hostname":"plugins.trac.wordpress.org","tags":[]},{"url":"https://plugins.trac.wordpress.org/changeset?sfp_email=&sfph_mail=&reponame=&old=3590029%40tutor&new=3590029%40tutor&sfp_email=&sfph_mail=","label":"plugins.trac.wordpress.org/changeset","hostname":"plugins.trac.wordpress.org","tags":[]},{"url":"https://www.wordfence.com/threat-intel/vulnerabilities/id/7483762c-5356-4844-90a9-511d9ec48625","label":"www.wordfence.com/threat-intel/vulnerabilities/id/7483762c-5356-4844-90a9-511d9ec48625","hostname":"www.wordfence.com","tags":["Vendor Advisory"]}],"lineage":{"upstream":[],"downstream":[],"duplicates":[],"related":[]},"timeline":[{"kind":"published","date":"2026-07-01T03:43:35.748Z","label":"Published","detail":"Vulnerability first disclosed.","source":null},{"kind":"modified","date":"2026-07-01T10:32:06.393Z","label":"Last modified","detail":"Vulnerability information updated.","source":null}],"risk":{"score":26,"level":"medium","profile":"Default","thresholds":{"critical":75,"high":50,"medium":25,"low":10}},"meta":{"dataAsOf":"2026-10-20T20:39:35.017Z","stale":false,"partial":false}}