{"items":[{"id":"NVI-00001788","kind":"vulnerability","title":"phpMyFAQ Allows Unauthenticated Account Creation via WebAuthn Prepare Endpoint","revision":3,"unknowns":["Customer inventory, deployment, reachability and exploitation have not been inspected.","NVD lastModified does not establish freshness of every associated CPE record."],"lifecycle":"active","identifiers":["GHSA-w22q-m2fm-x9f4","CVE-2026-27836"],"plain_summary":"OSV carries this publisher advisory for thorsten/phpmyfaq. This is an aggregated source copy; consult the original publisher and compare update dates.","review_status":"source_listed","control_topics":[],"public_actions":[{"summary":"The original advisory lists fixed boundaries 4.0.18 for thorsten/phpmyfaq. Confirm the publisher’s latest guidance.","source_ids":["sr-00616d40df35af88811aabf721a52244"],"action_type":"vendor_patch","limitations":"Confirm current vendor support, compatibility and deployment evidence. This report has not tested a fix in your system.","current_supported_target":null},{"summary":"Identify the exact component and deployed version, examine the linked publisher’s conditions, and retain evidence of any mitigation.","source_ids":["sr-a1417f4d6691d25deb4150a9aa3dbbc8"],"action_type":"investigate","limitations":"Confirm current vendor support, compatibility and deployment evidence. This report has not tested a fix in your system.","current_supported_target":null}],"schema_version":"1.1.0","source_metrics":[{"kind":"CVSS","as_of":"2026-06-17T10:27:46.023Z","value":"7.5 HIGH (3.1)","meaning":"security-advisories@github.com severity; no combined Null risk score.","source_id":"sr-1d6a2abf46ce1038a0fd2a538a33c352"},{"kind":"EPSS","as_of":"2026-10-31T12:00:27.000Z","value":"0.452%","meaning":"FIRST EPSS model v2026.06.15; exploitation probability over 30 days, percentile 0.39323. Missing scores are unknown.","source_id":"sr-a1417f4d6691d25deb4150a9aa3dbbc8"}],"why_it_matters":"Published affected context helps an owner decide what evidence to gather. This report has not examined your application.","related_sources":[{"id":"sr-00616d40df35af88811aabf721a52244","url":"https://github.com/advisories/GHSA-w22q-m2fm-x9f4","basis":"vendor_advisory","notes":"GitHub-origin advisory, CC-BY-4.0; OSV is an aggregate copy, not independent corroboration.","title":"GHSA-w22q-m2fm-x9f4","publisher":"GitHub Advisory Database via OSV","observed_at":"2026-10-31T21:42:41.380Z"},{"id":"sr-1d6a2abf46ce1038a0fd2a538a33c352","url":"https://nvd.nist.gov/vuln/detail/CVE-2026-27836","basis":"official_catalog","notes":"This product uses data from the NVD API but is not endorsed or certified by the NVD.","title":"CVE-2026-27836","publisher":"NIST National Vulnerability Database","observed_at":"2026-11-01T01:40:56.268Z"},{"id":"sr-a1417f4d6691d25deb4150a9aa3dbbc8","url":"https://www.first.org/epss/data.html","basis":"official_catalog","notes":"FIRST EPSS; probability of exploitation in the next 30 days, not local compromise. Dataset date/model retained; FIRST services terms apply.","title":"CVE-2026-27836","publisher":"FIRST EPSS","observed_at":"2026-10-31T22:06:15.376Z"}],"affected_context":[{"certainty":"source_listed","source_ids":["sr-00616d40df35af88811aabf721a52244"],"technology":"thorsten/phpmyfaq","known_exclusions":[],"conditions_summary":"### Summary\n\nThe WebAuthn prepare endpoint (`/api/webauthn/prepare`) creates new active user accounts without any authentication, CSRF protection, CAPTCHA, or configuration checks. This allows unauthenticated attackers to create unlimited user accounts even when registration is disabled.\n\n### Details\n\n**File:** `phpmyfaq/src/phpMyFAQ/Controller/Frontend/Api/WebAuthnController.php`, lines 63-79\n\n```php\n#[Route(path: 'webauthn/prepare', name: 'api.private.webauthn.prepare', methods: ['POST'])]\npublic function prepare(Request $request): JsonResponse\n{\n    $data = json_decode($request->getContent(), ...);\n    $username = Filter::filterVar($data->username, FILTER_SANITIZE_SPECIAL_CHARS);\n\n    if (!$this->user->getUserByLogin($username, raiseError: false)) {\n        try {\n            $this->user->createUser($username);\n            $this->user->setStatus(status: 'active');\n            $this->user->setAuthSource(AuthenticationSourceType::AUTH_WEB_AUTHN->value);\n            $this->user->setUserData([\n                'display_name' => $username,\n                'email' => $username,\n            ]);\n```\n\nThe endpoint:\n1. Accepts any POST request with a JSON `username` field\n2. If the username","public_affected_ranges":["ECOSYSTEM: introduced 0; fixed 4.0.18"]}],"null_published_at":"2026-11-04T02:53:03.179Z","source_updated_at":"2026-02-28T06:41:21.327Z","source_disclosed_at":"2026-02-27T21:01:58.000Z","is_synthetic_fixture":false,"null_last_reviewed_at":null,"public_change_summary":"Dated EPSS estimate updated; this is not a new disclosure or proof of exploitation.","null_first_observed_at":"2026-10-31T21:42:41.380Z"},{"id":"NVI-00001788","kind":"vulnerability","title":"phpMyFAQ Allows Unauthenticated Account Creation via WebAuthn Prepare Endpoint","revision":2,"unknowns":["Customer inventory, deployment, reachability and exploitation have not been inspected.","NVD lastModified does not establish freshness of every associated CPE record."],"lifecycle":"active","identifiers":["GHSA-w22q-m2fm-x9f4","CVE-2026-27836"],"plain_summary":"OSV carries this publisher advisory for thorsten/phpmyfaq. This is an aggregated source copy; consult the original publisher and compare update dates.","review_status":"source_listed","control_topics":[],"public_actions":[{"summary":"The original advisory lists fixed boundaries 4.0.18 for thorsten/phpmyfaq. Confirm the publisher’s latest guidance.","source_ids":["sr-00616d40df35af88811aabf721a52244"],"action_type":"vendor_patch","limitations":"Confirm current vendor support, compatibility and deployment evidence. This report has not tested a fix in your system.","current_supported_target":null},{"summary":"Identify the exact component and deployed version, examine the linked publisher’s conditions, and retain evidence of any mitigation.","source_ids":["sr-1d6a2abf46ce1038a0fd2a538a33c352"],"action_type":"investigate","limitations":"Confirm current vendor support, compatibility and deployment evidence. This report has not tested a fix in your system.","current_supported_target":null}],"schema_version":"1.1.0","source_metrics":[{"kind":"CVSS","as_of":"2026-06-17T10:27:46.023Z","value":"7.5 HIGH (3.1)","meaning":"security-advisories@github.com severity; no combined Null risk score.","source_id":"sr-1d6a2abf46ce1038a0fd2a538a33c352"}],"why_it_matters":"Published affected context helps an owner decide what evidence to gather. This report has not examined your application.","related_sources":[{"id":"sr-00616d40df35af88811aabf721a52244","url":"https://github.com/advisories/GHSA-w22q-m2fm-x9f4","basis":"vendor_advisory","notes":"GitHub-origin advisory, CC-BY-4.0; OSV is an aggregate copy, not independent corroboration.","title":"GHSA-w22q-m2fm-x9f4","publisher":"GitHub Advisory Database via OSV","observed_at":"2026-10-31T21:42:41.380Z"},{"id":"sr-1d6a2abf46ce1038a0fd2a538a33c352","url":"https://nvd.nist.gov/vuln/detail/CVE-2026-27836","basis":"official_catalog","notes":"This product uses data from the NVD API but is not endorsed or certified by the NVD.","title":"CVE-2026-27836","publisher":"NIST National Vulnerability Database","observed_at":"2026-11-01T01:40:56.268Z"}],"affected_context":[{"certainty":"source_listed","source_ids":["sr-00616d40df35af88811aabf721a52244"],"technology":"thorsten/phpmyfaq","known_exclusions":[],"conditions_summary":"### Summary\n\nThe WebAuthn prepare endpoint (`/api/webauthn/prepare`) creates new active user accounts without any authentication, CSRF protection, CAPTCHA, or configuration checks. This allows unauthenticated attackers to create unlimited user accounts even when registration is disabled.\n\n### Details\n\n**File:** `phpmyfaq/src/phpMyFAQ/Controller/Frontend/Api/WebAuthnController.php`, lines 63-79\n\n```php\n#[Route(path: 'webauthn/prepare', name: 'api.private.webauthn.prepare', methods: ['POST'])]\npublic function prepare(Request $request): JsonResponse\n{\n    $data = json_decode($request->getContent(), ...);\n    $username = Filter::filterVar($data->username, FILTER_SANITIZE_SPECIAL_CHARS);\n\n    if (!$this->user->getUserByLogin($username, raiseError: false)) {\n        try {\n            $this->user->createUser($username);\n            $this->user->setStatus(status: 'active');\n            $this->user->setAuthSource(AuthenticationSourceType::AUTH_WEB_AUTHN->value);\n            $this->user->setUserData([\n                'display_name' => $username,\n                'email' => $username,\n            ]);\n```\n\nThe endpoint:\n1. Accepts any POST request with a JSON `username` field\n2. If the username","public_affected_ranges":["ECOSYSTEM: introduced 0; fixed 4.0.18"]}],"null_published_at":"2026-11-01T14:34:07.537Z","source_updated_at":"2026-02-28T06:41:21.327Z","source_disclosed_at":"2026-02-27T21:01:58.000Z","is_synthetic_fixture":false,"null_last_reviewed_at":null,"public_change_summary":"Source facts changed; compare the preserved prior revision.","null_first_observed_at":"2026-10-31T21:42:41.380Z"},{"id":"NVI-00001788","kind":"vulnerability","title":"phpMyFAQ Allows Unauthenticated Account Creation via WebAuthn Prepare Endpoint","revision":1,"unknowns":["Customer inventory, deployment, reachability and exploitation have not been inspected."],"lifecycle":"active","identifiers":["GHSA-w22q-m2fm-x9f4","CVE-2026-27836"],"plain_summary":"OSV carries this publisher advisory for thorsten/phpmyfaq. This is an aggregated source copy; consult the original publisher and compare update dates.","review_status":"source_listed","control_topics":[],"public_actions":[{"summary":"The original advisory lists fixed boundaries 4.0.18 for thorsten/phpmyfaq. Confirm the publisher’s latest guidance.","source_ids":["sr-00616d40df35af88811aabf721a52244"],"action_type":"vendor_patch","limitations":"Confirm current vendor support, compatibility and deployment evidence. This report has not tested a fix in your system.","current_supported_target":null}],"schema_version":"1.1.0","source_metrics":[],"why_it_matters":"Published affected context helps an owner decide what evidence to gather. This report has not examined your application.","related_sources":[{"id":"sr-00616d40df35af88811aabf721a52244","url":"https://github.com/advisories/GHSA-w22q-m2fm-x9f4","basis":"vendor_advisory","notes":"GitHub-origin advisory, CC-BY-4.0; OSV is an aggregate copy, not independent corroboration.","title":"GHSA-w22q-m2fm-x9f4","publisher":"GitHub Advisory Database via OSV","observed_at":"2026-10-31T21:42:41.380Z"}],"affected_context":[{"certainty":"source_listed","source_ids":["sr-00616d40df35af88811aabf721a52244"],"technology":"thorsten/phpmyfaq","known_exclusions":[],"conditions_summary":"### Summary\n\nThe WebAuthn prepare endpoint (`/api/webauthn/prepare`) creates new active user accounts without any authentication, CSRF protection, CAPTCHA, or configuration checks. This allows unauthenticated attackers to create unlimited user accounts even when registration is disabled.\n\n### Details\n\n**File:** `phpmyfaq/src/phpMyFAQ/Controller/Frontend/Api/WebAuthnController.php`, lines 63-79\n\n```php\n#[Route(path: 'webauthn/prepare', name: 'api.private.webauthn.prepare', methods: ['POST'])]\npublic function prepare(Request $request): JsonResponse\n{\n    $data = json_decode($request->getContent(), ...);\n    $username = Filter::filterVar($data->username, FILTER_SANITIZE_SPECIAL_CHARS);\n\n    if (!$this->user->getUserByLogin($username, raiseError: false)) {\n        try {\n            $this->user->createUser($username);\n            $this->user->setStatus(status: 'active');\n            $this->user->setAuthSource(AuthenticationSourceType::AUTH_WEB_AUTHN->value);\n            $this->user->setUserData([\n                'display_name' => $username,\n                'email' => $username,\n            ]);\n```\n\nThe endpoint:\n1. Accepts any POST request with a JSON `username` field\n2. If the username","public_affected_ranges":["ECOSYSTEM: introduced 0; fixed 4.0.18"]}],"null_published_at":"2026-10-31T21:53:28.049Z","source_updated_at":"2026-02-28T06:41:21.327Z","source_disclosed_at":"2026-02-27T21:01:58.000Z","is_synthetic_fixture":false,"null_last_reviewed_at":null,"public_change_summary":"First indexed by Null; source disclosure date is shown separately.","null_first_observed_at":"2026-10-31T21:42:41.380Z"}],"next_cursor":null,"snapshot_revision":"42594"}