{"items":[{"id":"NVI-00004921","kind":"vulnerability","title":"Craft CMS: Authenticated \"assets/preview-thumb\" discloses signed fallback transform preview link to CP users without asset-view permission","revision":3,"unknowns":["Customer inventory, deployment, reachability and exploitation have not been inspected."],"lifecycle":"active","identifiers":["GHSA-x76w-8c62-48mg","CVE-2026-56384"],"plain_summary":"GitHub lists this reviewed advisory for craftcms/cms, craftcms/cms. Published version ranges and source prerequisites are shown below; this is not an inspection of a visitor’s application.","review_status":"source_listed","control_topics":[],"public_actions":[{"summary":"Identify the exact component and deployed version, examine the linked publisher’s conditions, and retain evidence of any mitigation.","source_ids":["sr-3e00adefe28b11a1bea6745caff7cc15"],"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},{"summary":"The original advisory lists fixed boundaries 4.17.8 for craftcms/cms. Confirm the publisher’s latest guidance.","source_ids":["sr-7951557fb175a769f9ce80b5a80604a9"],"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 5.9.14 for craftcms/cms. Confirm the publisher’s latest guidance.","source_ids":["sr-7951557fb175a769f9ce80b5a80604a9"],"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":[{"kind":"EPSS","as_of":"2026-10-31T12:00:27.000Z","value":"0.331%","meaning":"FIRST EPSS model v2026.06.15; exploitation probability over 30 days, percentile 0.26303. Missing scores are unknown.","source_id":"sr-3e00adefe28b11a1bea6745caff7cc15"}],"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-21afdc35b2c2c410422d065fb9661b86","url":"https://github.com/advisories/GHSA-x76w-8c62-48mg","basis":"vendor_advisory","notes":"GitHub Advisory Database; CC-BY-4.0. Each advisory links its original attribution. Null normalizes fields.","title":"GHSA-x76w-8c62-48mg","publisher":"GitHub Advisory Database","observed_at":"2026-11-03T02:28:46.523Z"},{"id":"sr-7951557fb175a769f9ce80b5a80604a9","url":"https://github.com/advisories/GHSA-x76w-8c62-48mg","basis":"vendor_advisory","notes":"GitHub-origin advisory, CC-BY-4.0; OSV is an aggregate copy, not independent corroboration.","title":"GHSA-x76w-8c62-48mg","publisher":"GitHub Advisory Database via OSV","observed_at":"2026-10-31T21:42:51.441Z"},{"id":"sr-3e00adefe28b11a1bea6745caff7cc15","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-2026-56384","publisher":"FIRST EPSS","observed_at":"2026-10-31T22:06:15.383Z"}],"affected_context":[{"certainty":"source_listed","source_ids":["sr-21afdc35b2c2c410422d065fb9661b86"],"technology":"craftcms/cms","known_exclusions":[],"conditions_summary":"### Summary\n\nA user with Control Panel access but without permission to view a target private asset can call `assets/preview-thumb` and receive preview HTML that contains a signed fallback transform link for that private asset.\n\n### Details\n\nRoot-cause analysis:\n1. The endpoint accepts an attacker-controlled `assetId`.\n2. Asset is resolved, and thumbnail HTML is returned.\n3. No explicit asset-view permission check is performed before preview generation.\n\n### Impact\n\nType:\n\n1. Missing authorization\n2. Unauthorized preview-link disclosure\n\n  Affected deployments:\n\n1. Craft sites with control panel users who have partial permissions and private assets.\n\n  Security consequence:\n\n  1. A control panel user without asset-view permission can still obtain signed preview transform link data for private assets.\n  2. This may increase private asset exposure risk depending on deployment and endpoint chaining.\n\n## Resources\n\nhttps://github.com/craftcms/cms/commit/d30df3112220db1ffd6726a3ed11857014c7fb27","public_affected_ranges":[">= 4.0.0-RC1, <= 4.17.7"]},{"certainty":"source_listed","source_ids":["sr-21afdc35b2c2c410422d065fb9661b86"],"technology":"craftcms/cms","known_exclusions":[],"conditions_summary":"### Summary\n\nA user with Control Panel access but without permission to view a target private asset can call `assets/preview-thumb` and receive preview HTML that contains a signed fallback transform link for that private asset.\n\n### Details\n\nRoot-cause analysis:\n1. The endpoint accepts an attacker-controlled `assetId`.\n2. Asset is resolved, and thumbnail HTML is returned.\n3. No explicit asset-view permission check is performed before preview generation.\n\n### Impact\n\nType:\n\n1. Missing authorization\n2. Unauthorized preview-link disclosure\n\n  Affected deployments:\n\n1. Craft sites with control panel users who have partial permissions and private assets.\n\n  Security consequence:\n\n  1. A control panel user without asset-view permission can still obtain signed preview transform link data for private assets.\n  2. This may increase private asset exposure risk depending on deployment and endpoint chaining.\n\n## Resources\n\nhttps://github.com/craftcms/cms/commit/d30df3112220db1ffd6726a3ed11857014c7fb27","public_affected_ranges":[">= 5.0.0-RC1, <= 5.9.13"]},{"certainty":"source_listed","source_ids":["sr-7951557fb175a769f9ce80b5a80604a9"],"technology":"craftcms/cms","known_exclusions":[],"conditions_summary":"### Summary\n\nA user with Control Panel access but without permission to view a target private asset can call `assets/preview-thumb` and receive preview HTML that contains a signed fallback transform link for that private asset.\n\n### Details\n\nRoot-cause analysis:\n1. The endpoint accepts an attacker-controlled `assetId`.\n2. Asset is resolved, and thumbnail HTML is returned.\n3. No explicit asset-view permission check is performed before preview generation.\n\n### Impact\n\nType:\n\n1. Missing authorization\n2. Unauthorized preview-link disclosure\n\n  Affected deployments:\n\n1. Craft sites with control panel users who have partial permissions and private assets.\n\n  Security consequence:\n\n  1. A control panel user without asset-view permission can still obtain signed preview transform link data for private assets.\n  2. This may increase private asset exposure risk depending on deployment and endpoint chaining.\n\n## Resources\n\nhttps://github.com/craftcms/cms/commit/d30df3112220db1ffd6726a3ed11857014c7fb27","public_affected_ranges":["ECOSYSTEM: introduced 4.0.0-RC1; fixed 4.17.8"]},{"certainty":"source_listed","source_ids":["sr-7951557fb175a769f9ce80b5a80604a9"],"technology":"craftcms/cms","known_exclusions":[],"conditions_summary":"### Summary\n\nA user with Control Panel access but without permission to view a target private asset can call `assets/preview-thumb` and receive preview HTML that contains a signed fallback transform link for that private asset.\n\n### Details\n\nRoot-cause analysis:\n1. The endpoint accepts an attacker-controlled `assetId`.\n2. Asset is resolved, and thumbnail HTML is returned.\n3. No explicit asset-view permission check is performed before preview generation.\n\n### Impact\n\nType:\n\n1. Missing authorization\n2. Unauthorized preview-link disclosure\n\n  Affected deployments:\n\n1. Craft sites with control panel users who have partial permissions and private assets.\n\n  Security consequence:\n\n  1. A control panel user without asset-view permission can still obtain signed preview transform link data for private assets.\n  2. This may increase private asset exposure risk depending on deployment and endpoint chaining.\n\n## Resources\n\nhttps://github.com/craftcms/cms/commit/d30df3112220db1ffd6726a3ed11857014c7fb27","public_affected_ranges":["ECOSYSTEM: introduced 5.0.0-RC1; fixed 5.9.14"]}],"null_published_at":"2026-11-03T10:03:26.548Z","source_updated_at":"2026-08-06T21:06:20.000Z","source_disclosed_at":"2026-07-06T20:28:07.000Z","is_synthetic_fixture":false,"null_last_reviewed_at":null,"public_change_summary":"Source facts changed; compare the preserved prior revision.","null_first_observed_at":"2026-10-31T21:42:51.441Z"},{"id":"NVI-00004921","kind":"vulnerability","title":"Craft CMS: Authenticated \"assets/preview-thumb\" discloses signed fallback transform preview link to CP users without asset-view permission","revision":2,"unknowns":["Customer inventory, deployment, reachability and exploitation have not been inspected."],"lifecycle":"active","identifiers":["GHSA-x76w-8c62-48mg","CVE-2026-56384"],"plain_summary":"OSV carries this publisher advisory for craftcms/cms, craftcms/cms. 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 4.17.8 for craftcms/cms. Confirm the publisher’s latest guidance.","source_ids":["sr-7951557fb175a769f9ce80b5a80604a9"],"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 5.9.14 for craftcms/cms. Confirm the publisher’s latest guidance.","source_ids":["sr-7951557fb175a769f9ce80b5a80604a9"],"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-3e00adefe28b11a1bea6745caff7cc15"],"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":"0.331%","meaning":"FIRST EPSS model v2026.06.15; exploitation probability over 30 days, percentile 0.26303. Missing scores are unknown.","source_id":"sr-3e00adefe28b11a1bea6745caff7cc15"}],"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-7951557fb175a769f9ce80b5a80604a9","url":"https://github.com/advisories/GHSA-x76w-8c62-48mg","basis":"vendor_advisory","notes":"GitHub-origin advisory, CC-BY-4.0; OSV is an aggregate copy, not independent corroboration.","title":"GHSA-x76w-8c62-48mg","publisher":"GitHub Advisory Database via OSV","observed_at":"2026-10-31T21:42:51.441Z"},{"id":"sr-3e00adefe28b11a1bea6745caff7cc15","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-2026-56384","publisher":"FIRST EPSS","observed_at":"2026-10-31T22:06:15.383Z"}],"affected_context":[{"certainty":"source_listed","source_ids":["sr-7951557fb175a769f9ce80b5a80604a9"],"technology":"craftcms/cms","known_exclusions":[],"conditions_summary":"### Summary\n\nA user with Control Panel access but without permission to view a target private asset can call `assets/preview-thumb` and receive preview HTML that contains a signed fallback transform link for that private asset.\n\n### Details\n\nRoot-cause analysis:\n1. The endpoint accepts an attacker-controlled `assetId`.\n2. Asset is resolved, and thumbnail HTML is returned.\n3. No explicit asset-view permission check is performed before preview generation.\n\n### Impact\n\nType:\n\n1. Missing authorization\n2. Unauthorized preview-link disclosure\n\n  Affected deployments:\n\n1. Craft sites with control panel users who have partial permissions and private assets.\n\n  Security consequence:\n\n  1. A control panel user without asset-view permission can still obtain signed preview transform link data for private assets.\n  2. This may increase private asset exposure risk depending on deployment and endpoint chaining.\n\n## Resources\n\nhttps://github.com/craftcms/cms/commit/d30df3112220db1ffd6726a3ed11857014c7fb27","public_affected_ranges":["ECOSYSTEM: introduced 4.0.0-RC1; fixed 4.17.8"]},{"certainty":"source_listed","source_ids":["sr-7951557fb175a769f9ce80b5a80604a9"],"technology":"craftcms/cms","known_exclusions":[],"conditions_summary":"### Summary\n\nA user with Control Panel access but without permission to view a target private asset can call `assets/preview-thumb` and receive preview HTML that contains a signed fallback transform link for that private asset.\n\n### Details\n\nRoot-cause analysis:\n1. The endpoint accepts an attacker-controlled `assetId`.\n2. Asset is resolved, and thumbnail HTML is returned.\n3. No explicit asset-view permission check is performed before preview generation.\n\n### Impact\n\nType:\n\n1. Missing authorization\n2. Unauthorized preview-link disclosure\n\n  Affected deployments:\n\n1. Craft sites with control panel users who have partial permissions and private assets.\n\n  Security consequence:\n\n  1. A control panel user without asset-view permission can still obtain signed preview transform link data for private assets.\n  2. This may increase private asset exposure risk depending on deployment and endpoint chaining.\n\n## Resources\n\nhttps://github.com/craftcms/cms/commit/d30df3112220db1ffd6726a3ed11857014c7fb27","public_affected_ranges":["ECOSYSTEM: introduced 5.0.0-RC1; fixed 5.9.14"]}],"null_published_at":"2026-10-31T23:18:17.195Z","source_updated_at":"2026-08-06T21:15:55.729Z","source_disclosed_at":"2026-07-06T20:28:07.000Z","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":"2026-10-31T21:42:51.441Z"},{"id":"NVI-00004921","kind":"vulnerability","title":"Craft CMS: Authenticated \"assets/preview-thumb\" discloses signed fallback transform preview link to CP users without asset-view permission","revision":1,"unknowns":["Customer inventory, deployment, reachability and exploitation have not been inspected."],"lifecycle":"active","identifiers":["GHSA-x76w-8c62-48mg","CVE-2026-56384"],"plain_summary":"OSV carries this publisher advisory for craftcms/cms, craftcms/cms. 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 4.17.8 for craftcms/cms. Confirm the publisher’s latest guidance.","source_ids":["sr-7951557fb175a769f9ce80b5a80604a9"],"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 5.9.14 for craftcms/cms. Confirm the publisher’s latest guidance.","source_ids":["sr-7951557fb175a769f9ce80b5a80604a9"],"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-7951557fb175a769f9ce80b5a80604a9","url":"https://github.com/advisories/GHSA-x76w-8c62-48mg","basis":"vendor_advisory","notes":"GitHub-origin advisory, CC-BY-4.0; OSV is an aggregate copy, not independent corroboration.","title":"GHSA-x76w-8c62-48mg","publisher":"GitHub Advisory Database via OSV","observed_at":"2026-10-31T21:42:51.441Z"}],"affected_context":[{"certainty":"source_listed","source_ids":["sr-7951557fb175a769f9ce80b5a80604a9"],"technology":"craftcms/cms","known_exclusions":[],"conditions_summary":"### Summary\n\nA user with Control Panel access but without permission to view a target private asset can call `assets/preview-thumb` and receive preview HTML that contains a signed fallback transform link for that private asset.\n\n### Details\n\nRoot-cause analysis:\n1. The endpoint accepts an attacker-controlled `assetId`.\n2. Asset is resolved, and thumbnail HTML is returned.\n3. No explicit asset-view permission check is performed before preview generation.\n\n### Impact\n\nType:\n\n1. Missing authorization\n2. Unauthorized preview-link disclosure\n\n  Affected deployments:\n\n1. Craft sites with control panel users who have partial permissions and private assets.\n\n  Security consequence:\n\n  1. A control panel user without asset-view permission can still obtain signed preview transform link data for private assets.\n  2. This may increase private asset exposure risk depending on deployment and endpoint chaining.\n\n## Resources\n\nhttps://github.com/craftcms/cms/commit/d30df3112220db1ffd6726a3ed11857014c7fb27","public_affected_ranges":["ECOSYSTEM: introduced 4.0.0-RC1; fixed 4.17.8"]},{"certainty":"source_listed","source_ids":["sr-7951557fb175a769f9ce80b5a80604a9"],"technology":"craftcms/cms","known_exclusions":[],"conditions_summary":"### Summary\n\nA user with Control Panel access but without permission to view a target private asset can call `assets/preview-thumb` and receive preview HTML that contains a signed fallback transform link for that private asset.\n\n### Details\n\nRoot-cause analysis:\n1. The endpoint accepts an attacker-controlled `assetId`.\n2. Asset is resolved, and thumbnail HTML is returned.\n3. No explicit asset-view permission check is performed before preview generation.\n\n### Impact\n\nType:\n\n1. Missing authorization\n2. Unauthorized preview-link disclosure\n\n  Affected deployments:\n\n1. Craft sites with control panel users who have partial permissions and private assets.\n\n  Security consequence:\n\n  1. A control panel user without asset-view permission can still obtain signed preview transform link data for private assets.\n  2. This may increase private asset exposure risk depending on deployment and endpoint chaining.\n\n## Resources\n\nhttps://github.com/craftcms/cms/commit/d30df3112220db1ffd6726a3ed11857014c7fb27","public_affected_ranges":["ECOSYSTEM: introduced 5.0.0-RC1; fixed 5.9.14"]}],"null_published_at":"2026-10-31T22:12:57.147Z","source_updated_at":"2026-08-06T21:15:55.729Z","source_disclosed_at":"2026-07-06T20:28:07.000Z","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":"2026-10-31T21:42:51.441Z"}],"next_cursor":null,"snapshot_revision":"39771"}