{"items":[{"id":"NVI-00003874","kind":"vulnerability","title":"Contao crawler leaks auth credentials to external hosts","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-3mr9-p497-58f6","CVE-2026-55824"],"plain_summary":"OSV carries this publisher advisory for contao/contao, contao/contao, contao/core-bundle, contao/core-bundle. 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 5.3.47 for contao/contao. Confirm the publisher’s latest guidance.","source_ids":["sr-4e40d718fbd887ec8c2931fd4466ec94"],"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":"The original advisory lists fixed boundaries 5.7.7 for contao/contao. Confirm the publisher’s latest guidance.","source_ids":["sr-4e40d718fbd887ec8c2931fd4466ec94"],"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":"The original advisory lists fixed boundaries 5.3.47 for contao/core-bundle. Confirm the publisher’s latest guidance.","source_ids":["sr-4e40d718fbd887ec8c2931fd4466ec94"],"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":"The original advisory lists fixed boundaries 5.7.7 for contao/core-bundle. Confirm the publisher’s latest guidance.","source_ids":["sr-4e40d718fbd887ec8c2931fd4466ec94"],"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-2476a4fa703bba0857e066c01d1e61cc"],"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":"2026-09-08T20:51:43.490Z","value":"2.6 LOW (3.1)","meaning":"security-advisories@github.com severity; no combined Null risk score.","source_id":"sr-204a8cc8ec451bf54c77fc9ba3e86df8"},{"kind":"EPSS","as_of":"2026-11-01T12:00:16.000Z","value":"0.243%","meaning":"FIRST EPSS model v2026.06.15; exploitation probability over 30 days, percentile 0.15565. Missing scores are unknown.","source_id":"sr-2476a4fa703bba0857e066c01d1e61cc"}],"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-4e40d718fbd887ec8c2931fd4466ec94","url":"https://github.com/advisories/GHSA-3mr9-p497-58f6","basis":"vendor_advisory","notes":"GitHub-origin advisory, CC-BY-4.0; OSV is an aggregate copy, not independent corroboration.","title":"GHSA-3mr9-p497-58f6","publisher":"GitHub Advisory Database via OSV","observed_at":"2026-10-31T21:41:49.657Z"},{"id":"sr-204a8cc8ec451bf54c77fc9ba3e86df8","url":"https://nvd.nist.gov/vuln/detail/CVE-2026-55824","basis":"official_catalog","notes":"This product uses data from the NVD API but is not endorsed or certified by the NVD.","title":"CVE-2026-55824","publisher":"NIST National Vulnerability Database","observed_at":"2026-11-01T07:24:39.943Z"},{"id":"sr-2476a4fa703bba0857e066c01d1e61cc","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-2026-55824","publisher":"FIRST EPSS","observed_at":"2026-11-01T14:28:32.283Z"}],"affected_context":[{"certainty":"source_listed","source_ids":["sr-4e40d718fbd887ec8c2931fd4466ec94"],"technology":"contao/contao","known_exclusions":[],"conditions_summary":"### Summary\nContao's crawler tries to prevent confidential HTTP client options from being sent to external domains by creating a scoped client: full options for root page origins, cleaned options for everything else. The cleaner removes `Cookie` and `Authorization` headers, but it removes the non-Symfony option names `basic_auth` and `bearer_auth` instead of Symfony HttpClient's real `auth_basic` and `auth_bearer` options.\n\nWhen `contao.crawl.default_http_client_options` contains Basic or Bearer authentication for a protected staging/production site, those credentials remain in the \"clean\" client used for external links or configured additional URIs. An attacker who can get an external URL crawled, for example through a link on a crawled page while the broken-link checker is enabled, can receive the crawler credentials.\n\n## Technical Detail\n\n### Root Cause\n\n```php\n// core-bundle/src/Crawl/Escargot/Factory.php:175-209 @ e550b92a01ef625bd546e6c3956dd200af05ebf0\nprivate function createHttpClient(array $options = []): HttpClientInterface\n{\n    $options = array_merge_recursive(\n        [\n            'headers' => [\n                'accept' => 'text/html,application/xhtml+xml,application/","public_affected_ranges":["ECOSYSTEM: introduced 4.13.0; fixed 5.3.47"]},{"certainty":"source_listed","source_ids":["sr-4e40d718fbd887ec8c2931fd4466ec94"],"technology":"contao/contao","known_exclusions":[],"conditions_summary":"### Summary\nContao's crawler tries to prevent confidential HTTP client options from being sent to external domains by creating a scoped client: full options for root page origins, cleaned options for everything else. The cleaner removes `Cookie` and `Authorization` headers, but it removes the non-Symfony option names `basic_auth` and `bearer_auth` instead of Symfony HttpClient's real `auth_basic` and `auth_bearer` options.\n\nWhen `contao.crawl.default_http_client_options` contains Basic or Bearer authentication for a protected staging/production site, those credentials remain in the \"clean\" client used for external links or configured additional URIs. An attacker who can get an external URL crawled, for example through a link on a crawled page while the broken-link checker is enabled, can receive the crawler credentials.\n\n## Technical Detail\n\n### Root Cause\n\n```php\n// core-bundle/src/Crawl/Escargot/Factory.php:175-209 @ e550b92a01ef625bd546e6c3956dd200af05ebf0\nprivate function createHttpClient(array $options = []): HttpClientInterface\n{\n    $options = array_merge_recursive(\n        [\n            'headers' => [\n                'accept' => 'text/html,application/xhtml+xml,application/","public_affected_ranges":["ECOSYSTEM: introduced 5.4.0; fixed 5.7.7"]},{"certainty":"source_listed","source_ids":["sr-4e40d718fbd887ec8c2931fd4466ec94"],"technology":"contao/core-bundle","known_exclusions":[],"conditions_summary":"### Summary\nContao's crawler tries to prevent confidential HTTP client options from being sent to external domains by creating a scoped client: full options for root page origins, cleaned options for everything else. The cleaner removes `Cookie` and `Authorization` headers, but it removes the non-Symfony option names `basic_auth` and `bearer_auth` instead of Symfony HttpClient's real `auth_basic` and `auth_bearer` options.\n\nWhen `contao.crawl.default_http_client_options` contains Basic or Bearer authentication for a protected staging/production site, those credentials remain in the \"clean\" client used for external links or configured additional URIs. An attacker who can get an external URL crawled, for example through a link on a crawled page while the broken-link checker is enabled, can receive the crawler credentials.\n\n## Technical Detail\n\n### Root Cause\n\n```php\n// core-bundle/src/Crawl/Escargot/Factory.php:175-209 @ e550b92a01ef625bd546e6c3956dd200af05ebf0\nprivate function createHttpClient(array $options = []): HttpClientInterface\n{\n    $options = array_merge_recursive(\n        [\n            'headers' => [\n                'accept' => 'text/html,application/xhtml+xml,application/","public_affected_ranges":["ECOSYSTEM: introduced 4.13.0; fixed 5.3.47"]},{"certainty":"source_listed","source_ids":["sr-4e40d718fbd887ec8c2931fd4466ec94"],"technology":"contao/core-bundle","known_exclusions":[],"conditions_summary":"### Summary\nContao's crawler tries to prevent confidential HTTP client options from being sent to external domains by creating a scoped client: full options for root page origins, cleaned options for everything else. The cleaner removes `Cookie` and `Authorization` headers, but it removes the non-Symfony option names `basic_auth` and `bearer_auth` instead of Symfony HttpClient's real `auth_basic` and `auth_bearer` options.\n\nWhen `contao.crawl.default_http_client_options` contains Basic or Bearer authentication for a protected staging/production site, those credentials remain in the \"clean\" client used for external links or configured additional URIs. An attacker who can get an external URL crawled, for example through a link on a crawled page while the broken-link checker is enabled, can receive the crawler credentials.\n\n## Technical Detail\n\n### Root Cause\n\n```php\n// core-bundle/src/Crawl/Escargot/Factory.php:175-209 @ e550b92a01ef625bd546e6c3956dd200af05ebf0\nprivate function createHttpClient(array $options = []): HttpClientInterface\n{\n    $options = array_merge_recursive(\n        [\n            'headers' => [\n                'accept' => 'text/html,application/xhtml+xml,application/","public_affected_ranges":["ECOSYSTEM: introduced 5.4.0; fixed 5.7.7"]}],"null_published_at":"2026-11-04T18:04:03.188Z","source_updated_at":"2026-08-06T19:45:16.256Z","source_disclosed_at":"2026-08-06T19:43:02.000Z","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":"2026-10-31T21:41:49.657Z"},{"id":"NVI-00003874","kind":"vulnerability","title":"Contao crawler leaks auth credentials to external hosts","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-3mr9-p497-58f6","CVE-2026-55824"],"plain_summary":"OSV carries this publisher advisory for contao/contao, contao/contao, contao/core-bundle, contao/core-bundle. 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 5.3.47 for contao/contao. Confirm the publisher’s latest guidance.","source_ids":["sr-4e40d718fbd887ec8c2931fd4466ec94"],"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":"The original advisory lists fixed boundaries 5.7.7 for contao/contao. Confirm the publisher’s latest guidance.","source_ids":["sr-4e40d718fbd887ec8c2931fd4466ec94"],"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":"The original advisory lists fixed boundaries 5.3.47 for contao/core-bundle. Confirm the publisher’s latest guidance.","source_ids":["sr-4e40d718fbd887ec8c2931fd4466ec94"],"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":"The original advisory lists fixed boundaries 5.7.7 for contao/core-bundle. Confirm the publisher’s latest guidance.","source_ids":["sr-4e40d718fbd887ec8c2931fd4466ec94"],"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-204a8cc8ec451bf54c77fc9ba3e86df8"],"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":"2026-09-08T20:51:43.490Z","value":"2.6 LOW (3.1)","meaning":"security-advisories@github.com severity; no combined Null risk score.","source_id":"sr-204a8cc8ec451bf54c77fc9ba3e86df8"}],"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-4e40d718fbd887ec8c2931fd4466ec94","url":"https://github.com/advisories/GHSA-3mr9-p497-58f6","basis":"vendor_advisory","notes":"GitHub-origin advisory, CC-BY-4.0; OSV is an aggregate copy, not independent corroboration.","title":"GHSA-3mr9-p497-58f6","publisher":"GitHub Advisory Database via OSV","observed_at":"2026-10-31T21:41:49.657Z"},{"id":"sr-204a8cc8ec451bf54c77fc9ba3e86df8","url":"https://nvd.nist.gov/vuln/detail/CVE-2026-55824","basis":"official_catalog","notes":"This product uses data from the NVD API but is not endorsed or certified by the NVD.","title":"CVE-2026-55824","publisher":"NIST National Vulnerability Database","observed_at":"2026-11-01T07:24:39.943Z"}],"affected_context":[{"certainty":"source_listed","source_ids":["sr-4e40d718fbd887ec8c2931fd4466ec94"],"technology":"contao/contao","known_exclusions":[],"conditions_summary":"### Summary\nContao's crawler tries to prevent confidential HTTP client options from being sent to external domains by creating a scoped client: full options for root page origins, cleaned options for everything else. The cleaner removes `Cookie` and `Authorization` headers, but it removes the non-Symfony option names `basic_auth` and `bearer_auth` instead of Symfony HttpClient's real `auth_basic` and `auth_bearer` options.\n\nWhen `contao.crawl.default_http_client_options` contains Basic or Bearer authentication for a protected staging/production site, those credentials remain in the \"clean\" client used for external links or configured additional URIs. An attacker who can get an external URL crawled, for example through a link on a crawled page while the broken-link checker is enabled, can receive the crawler credentials.\n\n## Technical Detail\n\n### Root Cause\n\n```php\n// core-bundle/src/Crawl/Escargot/Factory.php:175-209 @ e550b92a01ef625bd546e6c3956dd200af05ebf0\nprivate function createHttpClient(array $options = []): HttpClientInterface\n{\n    $options = array_merge_recursive(\n        [\n            'headers' => [\n                'accept' => 'text/html,application/xhtml+xml,application/","public_affected_ranges":["ECOSYSTEM: introduced 4.13.0; fixed 5.3.47"]},{"certainty":"source_listed","source_ids":["sr-4e40d718fbd887ec8c2931fd4466ec94"],"technology":"contao/contao","known_exclusions":[],"conditions_summary":"### Summary\nContao's crawler tries to prevent confidential HTTP client options from being sent to external domains by creating a scoped client: full options for root page origins, cleaned options for everything else. The cleaner removes `Cookie` and `Authorization` headers, but it removes the non-Symfony option names `basic_auth` and `bearer_auth` instead of Symfony HttpClient's real `auth_basic` and `auth_bearer` options.\n\nWhen `contao.crawl.default_http_client_options` contains Basic or Bearer authentication for a protected staging/production site, those credentials remain in the \"clean\" client used for external links or configured additional URIs. An attacker who can get an external URL crawled, for example through a link on a crawled page while the broken-link checker is enabled, can receive the crawler credentials.\n\n## Technical Detail\n\n### Root Cause\n\n```php\n// core-bundle/src/Crawl/Escargot/Factory.php:175-209 @ e550b92a01ef625bd546e6c3956dd200af05ebf0\nprivate function createHttpClient(array $options = []): HttpClientInterface\n{\n    $options = array_merge_recursive(\n        [\n            'headers' => [\n                'accept' => 'text/html,application/xhtml+xml,application/","public_affected_ranges":["ECOSYSTEM: introduced 5.4.0; fixed 5.7.7"]},{"certainty":"source_listed","source_ids":["sr-4e40d718fbd887ec8c2931fd4466ec94"],"technology":"contao/core-bundle","known_exclusions":[],"conditions_summary":"### Summary\nContao's crawler tries to prevent confidential HTTP client options from being sent to external domains by creating a scoped client: full options for root page origins, cleaned options for everything else. The cleaner removes `Cookie` and `Authorization` headers, but it removes the non-Symfony option names `basic_auth` and `bearer_auth` instead of Symfony HttpClient's real `auth_basic` and `auth_bearer` options.\n\nWhen `contao.crawl.default_http_client_options` contains Basic or Bearer authentication for a protected staging/production site, those credentials remain in the \"clean\" client used for external links or configured additional URIs. An attacker who can get an external URL crawled, for example through a link on a crawled page while the broken-link checker is enabled, can receive the crawler credentials.\n\n## Technical Detail\n\n### Root Cause\n\n```php\n// core-bundle/src/Crawl/Escargot/Factory.php:175-209 @ e550b92a01ef625bd546e6c3956dd200af05ebf0\nprivate function createHttpClient(array $options = []): HttpClientInterface\n{\n    $options = array_merge_recursive(\n        [\n            'headers' => [\n                'accept' => 'text/html,application/xhtml+xml,application/","public_affected_ranges":["ECOSYSTEM: introduced 4.13.0; fixed 5.3.47"]},{"certainty":"source_listed","source_ids":["sr-4e40d718fbd887ec8c2931fd4466ec94"],"technology":"contao/core-bundle","known_exclusions":[],"conditions_summary":"### Summary\nContao's crawler tries to prevent confidential HTTP client options from being sent to external domains by creating a scoped client: full options for root page origins, cleaned options for everything else. The cleaner removes `Cookie` and `Authorization` headers, but it removes the non-Symfony option names `basic_auth` and `bearer_auth` instead of Symfony HttpClient's real `auth_basic` and `auth_bearer` options.\n\nWhen `contao.crawl.default_http_client_options` contains Basic or Bearer authentication for a protected staging/production site, those credentials remain in the \"clean\" client used for external links or configured additional URIs. An attacker who can get an external URL crawled, for example through a link on a crawled page while the broken-link checker is enabled, can receive the crawler credentials.\n\n## Technical Detail\n\n### Root Cause\n\n```php\n// core-bundle/src/Crawl/Escargot/Factory.php:175-209 @ e550b92a01ef625bd546e6c3956dd200af05ebf0\nprivate function createHttpClient(array $options = []): HttpClientInterface\n{\n    $options = array_merge_recursive(\n        [\n            'headers' => [\n                'accept' => 'text/html,application/xhtml+xml,application/","public_affected_ranges":["ECOSYSTEM: introduced 5.4.0; fixed 5.7.7"]}],"null_published_at":"2026-11-01T14:34:07.565Z","source_updated_at":"2026-08-06T19:45:16.256Z","source_disclosed_at":"2026-08-06T19:43:02.000Z","is_synthetic_fixture":false,"null_last_reviewed_at":null,"public_change_summary":"Source facts changed; compare the preserved prior revision.","null_first_observed_at":"2026-10-31T21:41:49.657Z"},{"id":"NVI-00003874","kind":"vulnerability","title":"Contao crawler leaks auth credentials to external hosts","revision":1,"unknowns":["Customer inventory, deployment, reachability and exploitation have not been inspected."],"lifecycle":"active","identifiers":["GHSA-3mr9-p497-58f6","CVE-2026-55824"],"plain_summary":"OSV carries this publisher advisory for contao/contao, contao/contao, contao/core-bundle, contao/core-bundle. 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 5.3.47 for contao/contao. Confirm the publisher’s latest guidance.","source_ids":["sr-4e40d718fbd887ec8c2931fd4466ec94"],"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":"The original advisory lists fixed boundaries 5.7.7 for contao/contao. Confirm the publisher’s latest guidance.","source_ids":["sr-4e40d718fbd887ec8c2931fd4466ec94"],"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":"The original advisory lists fixed boundaries 5.3.47 for contao/core-bundle. Confirm the publisher’s latest guidance.","source_ids":["sr-4e40d718fbd887ec8c2931fd4466ec94"],"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":"The original advisory lists fixed boundaries 5.7.7 for contao/core-bundle. Confirm the publisher’s latest guidance.","source_ids":["sr-4e40d718fbd887ec8c2931fd4466ec94"],"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-4e40d718fbd887ec8c2931fd4466ec94","url":"https://github.com/advisories/GHSA-3mr9-p497-58f6","basis":"vendor_advisory","notes":"GitHub-origin advisory, CC-BY-4.0; OSV is an aggregate copy, not independent corroboration.","title":"GHSA-3mr9-p497-58f6","publisher":"GitHub Advisory Database via OSV","observed_at":"2026-10-31T21:41:49.657Z"}],"affected_context":[{"certainty":"source_listed","source_ids":["sr-4e40d718fbd887ec8c2931fd4466ec94"],"technology":"contao/contao","known_exclusions":[],"conditions_summary":"### Summary\nContao's crawler tries to prevent confidential HTTP client options from being sent to external domains by creating a scoped client: full options for root page origins, cleaned options for everything else. The cleaner removes `Cookie` and `Authorization` headers, but it removes the non-Symfony option names `basic_auth` and `bearer_auth` instead of Symfony HttpClient's real `auth_basic` and `auth_bearer` options.\n\nWhen `contao.crawl.default_http_client_options` contains Basic or Bearer authentication for a protected staging/production site, those credentials remain in the \"clean\" client used for external links or configured additional URIs. An attacker who can get an external URL crawled, for example through a link on a crawled page while the broken-link checker is enabled, can receive the crawler credentials.\n\n## Technical Detail\n\n### Root Cause\n\n```php\n// core-bundle/src/Crawl/Escargot/Factory.php:175-209 @ e550b92a01ef625bd546e6c3956dd200af05ebf0\nprivate function createHttpClient(array $options = []): HttpClientInterface\n{\n    $options = array_merge_recursive(\n        [\n            'headers' => [\n                'accept' => 'text/html,application/xhtml+xml,application/","public_affected_ranges":["ECOSYSTEM: introduced 4.13.0; fixed 5.3.47"]},{"certainty":"source_listed","source_ids":["sr-4e40d718fbd887ec8c2931fd4466ec94"],"technology":"contao/contao","known_exclusions":[],"conditions_summary":"### Summary\nContao's crawler tries to prevent confidential HTTP client options from being sent to external domains by creating a scoped client: full options for root page origins, cleaned options for everything else. The cleaner removes `Cookie` and `Authorization` headers, but it removes the non-Symfony option names `basic_auth` and `bearer_auth` instead of Symfony HttpClient's real `auth_basic` and `auth_bearer` options.\n\nWhen `contao.crawl.default_http_client_options` contains Basic or Bearer authentication for a protected staging/production site, those credentials remain in the \"clean\" client used for external links or configured additional URIs. An attacker who can get an external URL crawled, for example through a link on a crawled page while the broken-link checker is enabled, can receive the crawler credentials.\n\n## Technical Detail\n\n### Root Cause\n\n```php\n// core-bundle/src/Crawl/Escargot/Factory.php:175-209 @ e550b92a01ef625bd546e6c3956dd200af05ebf0\nprivate function createHttpClient(array $options = []): HttpClientInterface\n{\n    $options = array_merge_recursive(\n        [\n            'headers' => [\n                'accept' => 'text/html,application/xhtml+xml,application/","public_affected_ranges":["ECOSYSTEM: introduced 5.4.0; fixed 5.7.7"]},{"certainty":"source_listed","source_ids":["sr-4e40d718fbd887ec8c2931fd4466ec94"],"technology":"contao/core-bundle","known_exclusions":[],"conditions_summary":"### Summary\nContao's crawler tries to prevent confidential HTTP client options from being sent to external domains by creating a scoped client: full options for root page origins, cleaned options for everything else. The cleaner removes `Cookie` and `Authorization` headers, but it removes the non-Symfony option names `basic_auth` and `bearer_auth` instead of Symfony HttpClient's real `auth_basic` and `auth_bearer` options.\n\nWhen `contao.crawl.default_http_client_options` contains Basic or Bearer authentication for a protected staging/production site, those credentials remain in the \"clean\" client used for external links or configured additional URIs. An attacker who can get an external URL crawled, for example through a link on a crawled page while the broken-link checker is enabled, can receive the crawler credentials.\n\n## Technical Detail\n\n### Root Cause\n\n```php\n// core-bundle/src/Crawl/Escargot/Factory.php:175-209 @ e550b92a01ef625bd546e6c3956dd200af05ebf0\nprivate function createHttpClient(array $options = []): HttpClientInterface\n{\n    $options = array_merge_recursive(\n        [\n            'headers' => [\n                'accept' => 'text/html,application/xhtml+xml,application/","public_affected_ranges":["ECOSYSTEM: introduced 4.13.0; fixed 5.3.47"]},{"certainty":"source_listed","source_ids":["sr-4e40d718fbd887ec8c2931fd4466ec94"],"technology":"contao/core-bundle","known_exclusions":[],"conditions_summary":"### Summary\nContao's crawler tries to prevent confidential HTTP client options from being sent to external domains by creating a scoped client: full options for root page origins, cleaned options for everything else. The cleaner removes `Cookie` and `Authorization` headers, but it removes the non-Symfony option names `basic_auth` and `bearer_auth` instead of Symfony HttpClient's real `auth_basic` and `auth_bearer` options.\n\nWhen `contao.crawl.default_http_client_options` contains Basic or Bearer authentication for a protected staging/production site, those credentials remain in the \"clean\" client used for external links or configured additional URIs. An attacker who can get an external URL crawled, for example through a link on a crawled page while the broken-link checker is enabled, can receive the crawler credentials.\n\n## Technical Detail\n\n### Root Cause\n\n```php\n// core-bundle/src/Crawl/Escargot/Factory.php:175-209 @ e550b92a01ef625bd546e6c3956dd200af05ebf0\nprivate function createHttpClient(array $options = []): HttpClientInterface\n{\n    $options = array_merge_recursive(\n        [\n            'headers' => [\n                'accept' => 'text/html,application/xhtml+xml,application/","public_affected_ranges":["ECOSYSTEM: introduced 5.4.0; fixed 5.7.7"]}],"null_published_at":"2026-10-31T22:12:52.601Z","source_updated_at":"2026-08-06T19:45:16.256Z","source_disclosed_at":"2026-08-06T19:43:02.000Z","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":"2026-10-31T21:41:49.657Z"}],"next_cursor":null,"snapshot_revision":"42594"}