{"id":"CVE-2025-10493","aliases":["EUVD-2025-29846","GHSA-5v4m-g3m7-229m"],"status":"published","title":"Chained Quiz \u003c= 1.3.5 - Unauthenticated Insecure Direct Object Reference via Cookie","description":"The Chained Quiz plugin for WordPress is vulnerable to Insecure Direct Object Reference in version 1.3.4 and below via the quiz submission and completion mechanisms due to missing validation on a user controlled key. This makes it possible for unauthenticated attackers to hijack and modify other users' quiz attempts by manipulating the chained_completion_id cookie value, allowing them to alter quiz answers, scores, and results of any user. The vulnerability was partially patched in versions 1.3.4 and 1.3.5.","severity":{"version":"3.1","score":5.3,"vector":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:L/A:N","level":"medium","assessor":"cna","from":"cve"},"epss":{"day":"2026-11-12","score":0.00916,"percentile":0.60671,"model":"v2026.06.15"},"facts":{"in_kev":false,"known_exploited":false,"public_exploit":true,"fix_available":false},"cwes":["CWE-639"],"published":"2025-09-18T06:49:45Z","modified":"2026-06-17T08:28:25Z","exploits":[{"source":"exploitdb","id":"EDB-52464","title":"Chained Quiz  1.3.5 - Unauthenticated Insecure Direct Object Reference via Cookie","type":"webapps","platform":"multiple","date":"2025-12-25","url":"https://www.exploit-db.com/exploits/52464"}],"products":[{"vendor":"prasunsen","product":"chained quiz"}],"references":[{"url":"https://www.wordfence.com/threat-intel/vulnerabilities/id/1d8f6965-1fe3-4f24-bd6b-9026e91bc5db?source=cve"},{"url":"https://plugins.trac.wordpress.org/browser/chained-quiz/tags/1.3.3/controllers/quizzes.php"},{"url":"https://plugins.trac.wordpress.org/browser/chained-quiz/tags/1.3.3/models/quiz.php"},{"url":"https://plugins.trac.wordpress.org/changeset/3362561/"},{"url":"https://plugins.trac.wordpress.org/changeset/3362701/"},{"url":"https://plugins.trac.wordpress.org/changeset/3362966/"},{"url":"https://nvd.nist.gov/vuln/detail/CVE-2025-10493"},{"url":"https://plugins.trac.wordpress.org/changeset/3362561"},{"url":"https://plugins.trac.wordpress.org/changeset/3362701"},{"url":"https://plugins.trac.wordpress.org/changeset/3362966"},{"url":"https://github.com/advisories/GHSA-5v4m-g3m7-229m"}],"sources":{"cve":[{"id":"CVE-2025-10493","title":"Chained Quiz \u003c= 1.3.5 - Unauthenticated Insecure Direct Object Reference via Cookie","description":"The Chained Quiz plugin for WordPress is vulnerable to Insecure Direct Object Reference in version 1.3.4 and below via the quiz submission and completion mechanisms due to missing validation on a user controlled key. This makes it possible for unauthenticated attackers to hijack and modify other users' quiz attempts by manipulating the chained_completion_id cookie value, allowing them to alter quiz answers, scores, and results of any user. The vulnerability was partially patched in versions 1.3.4 and 1.3.5.","status":"published","published":"2025-09-18T06:49:45.112Z","modified":"2026-04-08T16:40:38.202Z","cvss":[{"version":"3.1","score":5.3,"vector":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:L/A:N","level":"medium","assessor":"cna"}],"cwes":["CWE-639"],"updated_at":"2026-11-02T14:32:30.9782Z"}],"euvd":[{"id":"EUVD-2025-29846","description":"The Chained Quiz plugin for WordPress is vulnerable to Insecure Direct Object Reference in version 1.3.4 and below via the quiz submission and completion mechanisms due to missing validation on a user controlled key. This makes it possible for unauthenticated attackers to hijack and modify other users' quiz attempts by manipulating the chained_completion_id cookie value, allowing them to alter quiz answers, scores, and results of any user. The vulnerability was partially patched in versions 1.3.4 and 1.3.5.","status":"published","published":"2025-09-18T06:49:45Z","modified":"2026-04-08T16:40:38Z","cvss":[{"version":"3.1","score":5.3,"vector":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:L/A:N","level":"medium"}],"updated_at":"2026-11-02T19:25:06.888768Z"}],"ghsa":[{"id":"GHSA-5v4m-g3m7-229m","title":"The Chained Quiz plugin for WordPress is vulnerable to Insecure Direct Object Reference in...","description":"The Chained Quiz plugin for WordPress is vulnerable to Insecure Direct Object Reference in version 1.3.4 and below via the quiz submission and completion mechanisms due to missing validation on a user controlled key. This makes it possible for unauthenticated attackers to hijack and modify other users' quiz attempts by manipulating the chained_completion_id cookie value, allowing them to alter quiz answers, scores, and results of any user. The vulnerability was partially patched in versions 1.3.4 and 1.3.5.","status":"published","published":"2025-09-18T09:31:13Z","modified":"2025-09-18T09:31:19Z","cvss":[{"version":"3.1","score":5.3,"vector":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:L/A:N","level":"medium"}],"cwes":["CWE-639"],"updated_at":"2026-11-02T15:03:39.228327Z"}],"nvd":[{"id":"CVE-2025-10493","description":"The Chained Quiz plugin for WordPress is vulnerable to Insecure Direct Object Reference in version 1.3.4 and below via the quiz submission and completion mechanisms due to missing validation on a user controlled key. This makes it possible for unauthenticated attackers to hijack and modify other users' quiz attempts by manipulating the chained_completion_id cookie value, allowing them to alter quiz answers, scores, and results of any user. The vulnerability was partially patched in versions 1.3.4 and 1.3.5.","status":"published","published":"2025-09-18T07:15:59.39Z","modified":"2026-06-17T08:28:25.83Z","cvss":[{"version":"3.1","score":5.3,"vector":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:L/A:N","level":"medium","assessor":"secondary"}],"cwes":["CWE-639"],"updated_at":"2026-11-02T14:11:30.865098Z"}]}}