{"answers":{"affected":"","exploited":"There is no known exploitation of CVE-2026-18439 in the wild and no public exploit code.","fix":"No fix has been published for CVE-2026-18439 yet. Limit exposure of the affected software until one is available.","what":"CVE-2026-18439 is a medium-severity missing authorization vulnerability in themeum Tutor LMS – eLearning and online course solution, published on 22 Sep 2026. Any signed-in user can exploit it over the network, with no action from the victim."},"fix_prompt":"Check this codebase for CVE-2026-18439 and fix it if it is affected.\n\nWhat it is: CVE-2026-18439 is a medium-severity missing authorization vulnerability in themeum Tutor LMS – eLearning and online course solution, published on 22 Sep 2026. Any signed-in user can exploit it over the network, with no action from the victim.\nExploitation: There is no known exploitation of CVE-2026-18439 in the wild and no public exploit code.\n\nAffected product: themeum Tutor LMS – eLearning and online course solution. No package-level version data is available, so check the vendor advisory linked from the reference page.\n\nTask:\n1. Search the dependency manifests and lockfiles (for example package.json, package-lock.json, requirements.txt, poetry.lock, uv.lock, pom.xml, build.gradle, go.mod, Cargo.lock, Gemfile.lock) and any Dockerfiles for the affected packages, including transitive dependencies.\n2. If an affected version is in use, upgrade it to the fixed version for its release line with the project's package manager, so the lockfile is regenerated. Prefer the smallest upgrade that fixes it.\n3. If there is no fix, or the upgrade would break the build, do not guess: explain the risk and the safest workaround instead.\n4. Run the tests and summarise what changed and why.\n5. If nothing in the project is affected, say so and change nothing.\n\nReference: https://insights.sbomify.com/CVE-2026-18439/ (Markdown: https://insights.sbomify.com/CVE-2026-18439/index.md)","id":"CVE-2026-18439","markdown":"https://insights.sbomify.com/CVE-2026-18439/index.md","name":"CVE-2026-18439","record":{"aliases":["GHSA-9x9f-f428-ff8p"],"analysis":{"component_type":"cms_plugin","fix_type":"upgrade","impacts":["data_modify"],"network_reachable":"yes","non_default_config":false,"product_category":"WordPress plugin","requires_auth":"low_privilege","summary":"Authenticated instructors can modify or delete arbitrary quiz questions and answers belonging to other users due to missing authorization checks.","user_interaction":"not_required","vuln_class":"missing_authorization"},"analysis_generated_by":"qwen3.8-flash-next","assigner":"Wordfence","cpe":[],"cvss":{"score":4.3,"severity":"medium","source":"cna","vector":"CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:L/A:N","version":"3.1"},"cwes":[{"id":"CWE-639","name":"Authorization Bypass Through User-Controlled Key"}],"description":"The Tutor LMS – eLearning and online course solution plugin for WordPress is vulnerable to Insecure Direct Object Reference in versions up to, and including, 4.0.7 via the tutor_quiz_builder_save AJAX action due to missing validation that nested question_id, answer_id, deleted_question_ids[], and deleted_answer_ids[] values in the submitted payload belong to a quiz/topic/course the requester is authorized to manage. The handler only validates the top-level course_id, topic_id, and (when supplied) payload['ID'], but the nested identifiers are passed straight into $wpdb-\u003eupdate/DELETE statements in QuizBuilder::save_questions(), QuizBuilder::save_question_answers(), and QuizBuilder::handle_delete(). This makes it possible for authenticated attackers, with Instructor-level access and above, to overwrite the content and re-parent arbitrary quiz questions/answers belonging to other instructors or administrators, and to delete arbitrary quiz question and answer rows.","ecosystems":[],"exploits":{"exploitdb":0,"first_seen":null,"github_poc":0,"max_poc_stars":null,"metasploit":0,"nuclei":0,"refs":[],"tier":"none_known"},"has_fix":null,"headline":"Missing authorization in Tutor LMS – eLearning and online course solution","id":"CVE-2026-18439","indexable":true,"kev":null,"kind":"cve","links":{"ecosystem":null,"product":null,"products":[],"type":"missing_authorization","year":"2026"},"n_packages":0,"n_references":12,"next":{"headline":"Information disclosure in Appointment Booking Plugin – LatePoint | Calendar \u0026 Scheduling for WordPress","id":"CVE-2026-18441"},"packages":[],"prev":{"headline":"File upload in Templately – Elementor \u0026 Gutenberg Template Library: 6500+ Free \u0026 Pro Ready Templates And Cloud!","id":"CVE-2026-18438"},"products":["Tutor LMS – eLearning and online course solution"],"published":"2026-09-22","related":[],"sources":[{"class":"attribution","licence":"CVE Terms of Use (MITRE)","name":"CVE List","prefix":"CVE"},{"class":"attribution","licence":"CWE Terms of Use","name":"CWE (MITRE)"},{"class":"attribution","licence":"FIRST CVSS licence","name":"CVSS (FIRST)"}],"ssvc":{"automatable":"no","exploitation":"none","technical_impact":"partial"},"state":"PUBLISHED","updated":"2026-09-23","vendors":["themeum"]},"summary":"Authenticated instructors can modify or delete arbitrary quiz questions and answers belonging to other users due to missing authorization checks.","url":"https://insights.sbomify.com/CVE-2026-18439/"}