{"items":[{"id":"NVI-00005612","kind":"vulnerability","title":"Serendipity has a Host Header Injection allows authentication cookie scoping to attacker-controlled domain in functions_config.inc.php","revision":4,"unknowns":["Customer inventory, deployment, reachability and exploitation have not been inspected."],"lifecycle":"active","identifiers":["GHSA-4m6c-649p-f6gf","CVE-2026-39963"],"plain_summary":"OSV carries this publisher advisory for s9y/serendipity. 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 2.6.0 for s9y/serendipity. Confirm the publisher’s latest guidance.","source_ids":["sr-9602636ac9bab27664c130c306bf2376"],"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-012de0539580f9bb1c45726be725b101"],"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":"EPSS","as_of":"2026-11-04T12:03:12.000Z","value":"0.224%","meaning":"FIRST EPSS model v2026.06.15; exploitation probability over 30 days, percentile 0.13179. Missing scores are unknown.","source_id":"sr-012de0539580f9bb1c45726be725b101"}],"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-9602636ac9bab27664c130c306bf2376","url":"https://github.com/advisories/GHSA-4m6c-649p-f6gf","basis":"vendor_advisory","notes":"GitHub-origin advisory, CC-BY-4.0; OSV is an aggregate copy, not independent corroboration.","title":"GHSA-4m6c-649p-f6gf","publisher":"GitHub Advisory Database via OSV","observed_at":"2026-10-31T21:41:49.670Z"},{"id":"sr-012de0539580f9bb1c45726be725b101","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-2026-39963","publisher":"FIRST EPSS","observed_at":"2026-11-04T17:58:50.325Z"}],"affected_context":[{"certainty":"source_listed","source_ids":["sr-9602636ac9bab27664c130c306bf2376"],"technology":"s9y/serendipity","known_exclusions":[],"conditions_summary":"### Summary\nThe `serendipity_setCookie()` function uses `$_SERVER['HTTP_HOST']` without validation as the `domain` parameter of `setcookie()`. An attacker can force authentication cookies — including session tokens and auto-login tokens — to be scoped to an attacker-controlled domain, facilitating session hijacking.\n\n### Details\nIn `include/functions_config.inc.php:726`:\n```php\nfunction serendipity_setCookie($name, $value, $securebyprot = true, ...) {\n    $host = $_SERVER['HTTP_HOST']; // ← attacker-controlled, no validation\n\n    if ($securebyprot) {\n        if ($pos = strpos($host, \":\")) {\n            $host = substr($host, 0, $pos); // strips port only\n        }\n    }\n\n    setcookie(\"serendipity[$name]\", $value, [\n        'domain'   => $host,   // ← poisoned domain\n        'httponly' => $httpOnly,\n        'samesite' => 'Strict'\n    ]);\n}\n```\n\nThis function is called during login with sensitive cookies:\n```php\n// functions_config.inc.php:455-498\nserendipity_setCookie('author_autologintoken', $rnd, true, false, true);\nserendipity_setCookie('author_username', $user);\nserendipity_setCookie('author_token', $hash);\n```\n\nIf an attacker can influence the `Host` header at login time (e.g. ","public_affected_ranges":["ECOSYSTEM: introduced 0; fixed 2.6.0"]}],"null_published_at":"2026-11-06T07:24:11.220Z","source_updated_at":"2026-04-15T21:35:53.816Z","source_disclosed_at":"2026-04-14T22:32:29.000Z","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":"2026-10-31T21:41:49.670Z"},{"id":"NVI-00005612","kind":"vulnerability","title":"Serendipity has a Host Header Injection allows authentication cookie scoping to attacker-controlled domain in functions_config.inc.php","revision":3,"unknowns":["Customer inventory, deployment, reachability and exploitation have not been inspected."],"lifecycle":"active","identifiers":["GHSA-4m6c-649p-f6gf","CVE-2026-39963"],"plain_summary":"OSV carries this publisher advisory for s9y/serendipity. 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 2.6.0 for s9y/serendipity. Confirm the publisher’s latest guidance.","source_ids":["sr-9602636ac9bab27664c130c306bf2376"],"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-0c81401127845b3b464ad52ea42e2242"],"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":"EPSS","as_of":"2026-11-02T12:00:30.000Z","value":"0.224%","meaning":"FIRST EPSS model v2026.06.15; exploitation probability over 30 days, percentile 0.13083. Missing scores are unknown.","source_id":"sr-0c81401127845b3b464ad52ea42e2242"}],"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-9602636ac9bab27664c130c306bf2376","url":"https://github.com/advisories/GHSA-4m6c-649p-f6gf","basis":"vendor_advisory","notes":"GitHub-origin advisory, CC-BY-4.0; OSV is an aggregate copy, not independent corroboration.","title":"GHSA-4m6c-649p-f6gf","publisher":"GitHub Advisory Database via OSV","observed_at":"2026-10-31T21:41:49.670Z"},{"id":"sr-0c81401127845b3b464ad52ea42e2242","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-2026-39963","publisher":"FIRST EPSS","observed_at":"2026-11-02T20:15:58.852Z"}],"affected_context":[{"certainty":"source_listed","source_ids":["sr-9602636ac9bab27664c130c306bf2376"],"technology":"s9y/serendipity","known_exclusions":[],"conditions_summary":"### Summary\nThe `serendipity_setCookie()` function uses `$_SERVER['HTTP_HOST']` without validation as the `domain` parameter of `setcookie()`. An attacker can force authentication cookies — including session tokens and auto-login tokens — to be scoped to an attacker-controlled domain, facilitating session hijacking.\n\n### Details\nIn `include/functions_config.inc.php:726`:\n```php\nfunction serendipity_setCookie($name, $value, $securebyprot = true, ...) {\n    $host = $_SERVER['HTTP_HOST']; // ← attacker-controlled, no validation\n\n    if ($securebyprot) {\n        if ($pos = strpos($host, \":\")) {\n            $host = substr($host, 0, $pos); // strips port only\n        }\n    }\n\n    setcookie(\"serendipity[$name]\", $value, [\n        'domain'   => $host,   // ← poisoned domain\n        'httponly' => $httpOnly,\n        'samesite' => 'Strict'\n    ]);\n}\n```\n\nThis function is called during login with sensitive cookies:\n```php\n// functions_config.inc.php:455-498\nserendipity_setCookie('author_autologintoken', $rnd, true, false, true);\nserendipity_setCookie('author_username', $user);\nserendipity_setCookie('author_token', $hash);\n```\n\nIf an attacker can influence the `Host` header at login time (e.g. ","public_affected_ranges":["ECOSYSTEM: introduced 0; fixed 2.6.0"]}],"null_published_at":"2026-11-04T10:04:47.587Z","source_updated_at":"2026-04-15T21:35:53.816Z","source_disclosed_at":"2026-04-14T22:32:29.000Z","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":"2026-10-31T21:41:49.670Z"},{"id":"NVI-00005612","kind":"vulnerability","title":"Serendipity has a Host Header Injection allows authentication cookie scoping to attacker-controlled domain in functions_config.inc.php","revision":2,"unknowns":["Customer inventory, deployment, reachability and exploitation have not been inspected."],"lifecycle":"active","identifiers":["GHSA-4m6c-649p-f6gf","CVE-2026-39963"],"plain_summary":"OSV carries this publisher advisory for s9y/serendipity. 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 2.6.0 for s9y/serendipity. Confirm the publisher’s latest guidance.","source_ids":["sr-9602636ac9bab27664c130c306bf2376"],"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-623525e8a46d29f101cac0af9c88c7f3"],"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":"EPSS","as_of":"2026-10-31T12:00:27.000Z","value":"0.224%","meaning":"FIRST EPSS model v2026.06.15; exploitation probability over 30 days, percentile 0.13105. Missing scores are unknown.","source_id":"sr-623525e8a46d29f101cac0af9c88c7f3"}],"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-9602636ac9bab27664c130c306bf2376","url":"https://github.com/advisories/GHSA-4m6c-649p-f6gf","basis":"vendor_advisory","notes":"GitHub-origin advisory, CC-BY-4.0; OSV is an aggregate copy, not independent corroboration.","title":"GHSA-4m6c-649p-f6gf","publisher":"GitHub Advisory Database via OSV","observed_at":"2026-10-31T21:41:49.670Z"},{"id":"sr-623525e8a46d29f101cac0af9c88c7f3","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-2026-39963","publisher":"FIRST EPSS","observed_at":"2026-10-31T22:06:15.378Z"}],"affected_context":[{"certainty":"source_listed","source_ids":["sr-9602636ac9bab27664c130c306bf2376"],"technology":"s9y/serendipity","known_exclusions":[],"conditions_summary":"### Summary\nThe `serendipity_setCookie()` function uses `$_SERVER['HTTP_HOST']` without validation as the `domain` parameter of `setcookie()`. An attacker can force authentication cookies — including session tokens and auto-login tokens — to be scoped to an attacker-controlled domain, facilitating session hijacking.\n\n### Details\nIn `include/functions_config.inc.php:726`:\n```php\nfunction serendipity_setCookie($name, $value, $securebyprot = true, ...) {\n    $host = $_SERVER['HTTP_HOST']; // ← attacker-controlled, no validation\n\n    if ($securebyprot) {\n        if ($pos = strpos($host, \":\")) {\n            $host = substr($host, 0, $pos); // strips port only\n        }\n    }\n\n    setcookie(\"serendipity[$name]\", $value, [\n        'domain'   => $host,   // ← poisoned domain\n        'httponly' => $httpOnly,\n        'samesite' => 'Strict'\n    ]);\n}\n```\n\nThis function is called during login with sensitive cookies:\n```php\n// functions_config.inc.php:455-498\nserendipity_setCookie('author_autologintoken', $rnd, true, false, true);\nserendipity_setCookie('author_username', $user);\nserendipity_setCookie('author_token', $hash);\n```\n\nIf an attacker can influence the `Host` header at login time (e.g. ","public_affected_ranges":["ECOSYSTEM: introduced 0; fixed 2.6.0"]}],"null_published_at":"2026-11-01T01:45:38.541Z","source_updated_at":"2026-04-15T21:35:53.816Z","source_disclosed_at":"2026-04-14T22:32:29.000Z","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":"2026-10-31T21:41:49.670Z"},{"id":"NVI-00005612","kind":"vulnerability","title":"Serendipity has a Host Header Injection allows authentication cookie scoping to attacker-controlled domain in functions_config.inc.php","revision":1,"unknowns":["Customer inventory, deployment, reachability and exploitation have not been inspected."],"lifecycle":"active","identifiers":["GHSA-4m6c-649p-f6gf","CVE-2026-39963"],"plain_summary":"OSV carries this publisher advisory for s9y/serendipity. 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 2.6.0 for s9y/serendipity. Confirm the publisher’s latest guidance.","source_ids":["sr-9602636ac9bab27664c130c306bf2376"],"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-9602636ac9bab27664c130c306bf2376","url":"https://github.com/advisories/GHSA-4m6c-649p-f6gf","basis":"vendor_advisory","notes":"GitHub-origin advisory, CC-BY-4.0; OSV is an aggregate copy, not independent corroboration.","title":"GHSA-4m6c-649p-f6gf","publisher":"GitHub Advisory Database via OSV","observed_at":"2026-10-31T21:41:49.670Z"}],"affected_context":[{"certainty":"source_listed","source_ids":["sr-9602636ac9bab27664c130c306bf2376"],"technology":"s9y/serendipity","known_exclusions":[],"conditions_summary":"### Summary\nThe `serendipity_setCookie()` function uses `$_SERVER['HTTP_HOST']` without validation as the `domain` parameter of `setcookie()`. An attacker can force authentication cookies — including session tokens and auto-login tokens — to be scoped to an attacker-controlled domain, facilitating session hijacking.\n\n### Details\nIn `include/functions_config.inc.php:726`:\n```php\nfunction serendipity_setCookie($name, $value, $securebyprot = true, ...) {\n    $host = $_SERVER['HTTP_HOST']; // ← attacker-controlled, no validation\n\n    if ($securebyprot) {\n        if ($pos = strpos($host, \":\")) {\n            $host = substr($host, 0, $pos); // strips port only\n        }\n    }\n\n    setcookie(\"serendipity[$name]\", $value, [\n        'domain'   => $host,   // ← poisoned domain\n        'httponly' => $httpOnly,\n        'samesite' => 'Strict'\n    ]);\n}\n```\n\nThis function is called during login with sensitive cookies:\n```php\n// functions_config.inc.php:455-498\nserendipity_setCookie('author_autologintoken', $rnd, true, false, true);\nserendipity_setCookie('author_username', $user);\nserendipity_setCookie('author_token', $hash);\n```\n\nIf an attacker can influence the `Host` header at login time (e.g. ","public_affected_ranges":["ECOSYSTEM: introduced 0; fixed 2.6.0"]}],"null_published_at":"2026-10-31T22:13:01.471Z","source_updated_at":"2026-04-15T21:35:53.816Z","source_disclosed_at":"2026-04-14T22:32:29.000Z","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":"2026-10-31T21:41:49.670Z"}],"next_cursor":null,"snapshot_revision":"42594"}