{"items":[{"id":"NVI-00015100","kind":"vulnerability","title":"Ghost: File Upload Content-Type Spoofing","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-944x-pm95-3jpr","CVE-2026-53948"],"plain_summary":"GitHub lists this reviewed advisory for ghost. 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-020ea09f368b3bd90d30238436fcf406"],"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":"2026-08-04T21:05:41.000Z","value":"5.4 medium","meaning":"GitHub source severity; exploitability and local consequence require separate evidence.","source_id":"sr-21a7be3859e3c6dba35968e72a7661a1"},{"kind":"CVSS","as_of":"2026-10-25T22:10:00.150Z","value":"5.4 MEDIUM (3.1)","meaning":"security-advisories@github.com severity; no combined Null risk score.","source_id":"sr-2f8ad97092a6005eb1e6d8b351f93bcd"},{"kind":"EPSS","as_of":"2026-11-06T12:00:23.000Z","value":"0.226%","meaning":"FIRST EPSS model v2026.06.15; exploitation probability over 30 days, percentile 0.1337. Missing scores are unknown.","source_id":"sr-020ea09f368b3bd90d30238436fcf406"}],"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-21a7be3859e3c6dba35968e72a7661a1","url":"https://github.com/advisories/GHSA-944x-pm95-3jpr","basis":"vendor_advisory","notes":"GitHub Advisory Database; CC-BY-4.0. Each advisory links its original attribution. Null normalizes fields.","title":"GHSA-944x-pm95-3jpr","publisher":"GitHub Advisory Database","observed_at":"2026-11-03T09:58:09.980Z"},{"id":"sr-2f8ad97092a6005eb1e6d8b351f93bcd","url":"https://nvd.nist.gov/vuln/detail/CVE-2026-53948","basis":"official_catalog","notes":"This product uses data from the NVD API but is not endorsed or certified by the NVD.","title":"CVE-2026-53948","publisher":"NIST National Vulnerability Database","observed_at":"2026-11-08T01:48:05.462Z"},{"id":"sr-020ea09f368b3bd90d30238436fcf406","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-2026-53948","publisher":"FIRST EPSS","observed_at":"2026-11-07T00:50:47.039Z"}],"affected_context":[{"certainty":"source_listed","source_ids":["sr-21a7be3859e3c6dba35968e72a7661a1"],"technology":"ghost","known_exclusions":[],"conditions_summary":"### Impact\n\nInsufficient validation of the client-supplied `Content-Type` on Ghost's Admin API file upload endpoint allowed uploaded files to be served from the site with an attacker-chosen content type on S3/GCS storage backends. On installations that serve uploaded files from the same origin as the site, this could have been used to facilitate stored cross-site scripting against site visitors or staff.\n\n### Vulnerable versions\n\nThis vulnerability is present in Ghost from v6.19.4 up to v6.21.0.\n\n### Patches\n\nv6.21.1 contains a fix for this issue.\n\n### How to update\n\nFor self-hosters using Docker, find Docker's official Ghost image here. Updating a Docker-based Ghost instance is documented here. \n\nIf your Ghost is a Ghost-CLI install see our documentation on updating it to the latest version here. \n\n### For more information\n\nIf you have any questions or comments about this advisory, email us at security@ghost.org.","public_affected_ranges":[">= 6.19.4, < 6.21.1"]}],"null_published_at":"2026-11-08T19:53:44.046Z","source_updated_at":"2026-08-04T21:05:41.000Z","source_disclosed_at":"2026-08-04T21:05:39.000Z","is_synthetic_fixture":false,"null_last_reviewed_at":null,"public_change_summary":"Source facts changed; compare the preserved prior revision.","null_first_observed_at":"2026-11-03T09:58:09.980Z"},{"id":"NVI-00015100","kind":"vulnerability","title":"Ghost: File Upload Content-Type Spoofing","revision":2,"unknowns":["Customer inventory, deployment, reachability and exploitation have not been inspected."],"lifecycle":"active","identifiers":["GHSA-944x-pm95-3jpr","CVE-2026-53948"],"plain_summary":"GitHub lists this reviewed advisory for ghost. 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-020ea09f368b3bd90d30238436fcf406"],"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":"2026-08-04T21:05:41.000Z","value":"5.4 medium","meaning":"GitHub source severity; exploitability and local consequence require separate evidence.","source_id":"sr-21a7be3859e3c6dba35968e72a7661a1"},{"kind":"EPSS","as_of":"2026-11-06T12:00:23.000Z","value":"0.226%","meaning":"FIRST EPSS model v2026.06.15; exploitation probability over 30 days, percentile 0.1337. Missing scores are unknown.","source_id":"sr-020ea09f368b3bd90d30238436fcf406"}],"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-21a7be3859e3c6dba35968e72a7661a1","url":"https://github.com/advisories/GHSA-944x-pm95-3jpr","basis":"vendor_advisory","notes":"GitHub Advisory Database; CC-BY-4.0. Each advisory links its original attribution. Null normalizes fields.","title":"GHSA-944x-pm95-3jpr","publisher":"GitHub Advisory Database","observed_at":"2026-11-03T09:58:09.980Z"},{"id":"sr-020ea09f368b3bd90d30238436fcf406","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-2026-53948","publisher":"FIRST EPSS","observed_at":"2026-11-07T00:50:47.039Z"}],"affected_context":[{"certainty":"source_listed","source_ids":["sr-21a7be3859e3c6dba35968e72a7661a1"],"technology":"ghost","known_exclusions":[],"conditions_summary":"### Impact\n\nInsufficient validation of the client-supplied `Content-Type` on Ghost's Admin API file upload endpoint allowed uploaded files to be served from the site with an attacker-chosen content type on S3/GCS storage backends. On installations that serve uploaded files from the same origin as the site, this could have been used to facilitate stored cross-site scripting against site visitors or staff.\n\n### Vulnerable versions\n\nThis vulnerability is present in Ghost from v6.19.4 up to v6.21.0.\n\n### Patches\n\nv6.21.1 contains a fix for this issue.\n\n### How to update\n\nFor self-hosters using Docker, find Docker's official Ghost image here. Updating a Docker-based Ghost instance is documented here. \n\nIf your Ghost is a Ghost-CLI install see our documentation on updating it to the latest version here. \n\n### For more information\n\nIf you have any questions or comments about this advisory, email us at security@ghost.org.","public_affected_ranges":[">= 6.19.4, < 6.21.1"]}],"null_published_at":"2026-11-07T22:29:26.083Z","source_updated_at":"2026-08-04T21:05:41.000Z","source_disclosed_at":"2026-08-04T21:05:39.000Z","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":"2026-11-03T09:58:09.980Z"},{"id":"NVI-00015100","kind":"vulnerability","title":"Ghost: File Upload Content-Type Spoofing","revision":1,"unknowns":["Customer inventory, deployment, reachability and exploitation have not been inspected."],"lifecycle":"active","identifiers":["GHSA-944x-pm95-3jpr","CVE-2026-53948"],"plain_summary":"GitHub lists this reviewed advisory for ghost. 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-21a7be3859e3c6dba35968e72a7661a1"],"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":"2026-08-04T21:05:41.000Z","value":"5.4 medium","meaning":"GitHub source severity; exploitability and local consequence require separate evidence.","source_id":"sr-21a7be3859e3c6dba35968e72a7661a1"}],"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-21a7be3859e3c6dba35968e72a7661a1","url":"https://github.com/advisories/GHSA-944x-pm95-3jpr","basis":"vendor_advisory","notes":"GitHub Advisory Database; CC-BY-4.0. Each advisory links its original attribution. Null normalizes fields.","title":"GHSA-944x-pm95-3jpr","publisher":"GitHub Advisory Database","observed_at":"2026-11-03T09:58:09.980Z"}],"affected_context":[{"certainty":"source_listed","source_ids":["sr-21a7be3859e3c6dba35968e72a7661a1"],"technology":"ghost","known_exclusions":[],"conditions_summary":"### Impact\n\nInsufficient validation of the client-supplied `Content-Type` on Ghost's Admin API file upload endpoint allowed uploaded files to be served from the site with an attacker-chosen content type on S3/GCS storage backends. On installations that serve uploaded files from the same origin as the site, this could have been used to facilitate stored cross-site scripting against site visitors or staff.\n\n### Vulnerable versions\n\nThis vulnerability is present in Ghost from v6.19.4 up to v6.21.0.\n\n### Patches\n\nv6.21.1 contains a fix for this issue.\n\n### How to update\n\nFor self-hosters using Docker, find Docker's official Ghost image here. Updating a Docker-based Ghost instance is documented here. \n\nIf your Ghost is a Ghost-CLI install see our documentation on updating it to the latest version here. \n\n### For more information\n\nIf you have any questions or comments about this advisory, email us at security@ghost.org.","public_affected_ranges":[">= 6.19.4, < 6.21.1"]}],"null_published_at":"2026-11-03T10:03:26.548Z","source_updated_at":"2026-08-04T21:05:41.000Z","source_disclosed_at":"2026-08-04T21:05:39.000Z","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":"2026-11-03T09:58:09.980Z"}],"next_cursor":null,"snapshot_revision":"42594"}