{"items":[{"id":"NVI-00003848","kind":"vulnerability","title":"Stored XSS by authenticated backend user with access to upload files","revision":4,"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-fx3v-553x-3c4q","CVE-2020-15249"],"plain_summary":"OSV carries this publisher advisory for october/backend. 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 1.0.469 for october/backend. Confirm the publisher’s latest guidance.","source_ids":["sr-4d2a04f8ed80a585fdfad07f53fdde2f"],"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-33bbdcb4565913ac5ec2c36422419dcf"],"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":"2026-06-17T02:56:21.413Z","value":"3.5 LOW (2.0)","meaning":"nvd@nist.gov severity; no combined Null risk score.","source_id":"sr-1653a164e938b60a2dd610440a8f24ab"},{"kind":"CVSS","as_of":"2026-06-17T02:56:21.413Z","value":"2.8 LOW (3.1)","meaning":"security-advisories@github.com severity; no combined Null risk score.","source_id":"sr-1653a164e938b60a2dd610440a8f24ab"},{"kind":"CVSS","as_of":"2026-06-17T02:56:21.413Z","value":"5.4 MEDIUM (3.1)","meaning":"nvd@nist.gov severity; no combined Null risk score.","source_id":"sr-1653a164e938b60a2dd610440a8f24ab"},{"kind":"EPSS","as_of":"2026-11-01T12:00:16.000Z","value":"0.465%","meaning":"FIRST EPSS model v2026.06.15; exploitation probability over 30 days, percentile 0.40261. Missing scores are unknown.","source_id":"sr-33bbdcb4565913ac5ec2c36422419dcf"}],"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-4d2a04f8ed80a585fdfad07f53fdde2f","url":"https://github.com/advisories/GHSA-fx3v-553x-3c4q","basis":"vendor_advisory","notes":"GitHub-origin advisory, CC-BY-4.0; OSV is an aggregate copy, not independent corroboration.","title":"GHSA-fx3v-553x-3c4q","publisher":"GitHub Advisory Database via OSV","observed_at":"2026-10-31T21:42:20.408Z"},{"id":"sr-1653a164e938b60a2dd610440a8f24ab","url":"https://nvd.nist.gov/vuln/detail/CVE-2020-15249","basis":"official_catalog","notes":"This product uses data from the NVD API but is not endorsed or certified by the NVD.","title":"CVE-2020-15249","publisher":"NIST National Vulnerability Database","observed_at":"2026-10-31T22:07:06.394Z"},{"id":"sr-33bbdcb4565913ac5ec2c36422419dcf","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-2020-15249","publisher":"FIRST EPSS","observed_at":"2026-11-01T14:27:48.610Z"}],"affected_context":[{"certainty":"source_listed","source_ids":["sr-4d2a04f8ed80a585fdfad07f53fdde2f"],"technology":"october/backend","known_exclusions":[],"conditions_summary":"### Impact\nBackend users with access to upload files were permitted to upload SVG files without any sanitization applied to the uploaded files. Since SVG files support being parsed as HTML by browsers, this means that they could theoretically upload Javascript that would be executed on a path under the website's domain (i.e. /storage/app/media/evil.svg), but they would have to convince their target to visit that location directly in the target's browser as the backend does not display SVGs inline anywhere, SVGs are only displayed as image resources in the backend and are thus unable to be executed.\n\n### Patches\nIssue has been patched in Build 469 (v1.0.469) & v1.1.0.\n\n### Workarounds\nApply https://github.com/octobercms/library/commit/80aab47f044a2660aa352450f55137598f362aa4 to your installation manually if unable to upgrade to Build 469 or v1.1.0.\n\n### References\nReported by Hoan Hoang\n\n### For more information\nIf you have any questions or comments about this advisory:\n* Email us at hello@octobercms.com\n\n### Threat assessment:\n<img width=\"1107\" alt=\"Screen Shot 2020-10-10 at 1 47 49 PM\" src=\"https://user-images.githubuserc","public_affected_ranges":["ECOSYSTEM: introduced 1.0.319; fixed 1.0.469"]}],"null_published_at":"2026-11-07T18:43:12.118Z","source_updated_at":"2026-07-08T06:27:24.116Z","source_disclosed_at":"2020-11-23T19:47:59.000Z","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":"2026-10-31T21:42:20.408Z"},{"id":"NVI-00003848","kind":"vulnerability","title":"Stored XSS by authenticated backend user with access to upload files","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-fx3v-553x-3c4q","CVE-2020-15249"],"plain_summary":"OSV carries this publisher advisory for october/backend. 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 1.0.469 for october/backend. Confirm the publisher’s latest guidance.","source_ids":["sr-4d2a04f8ed80a585fdfad07f53fdde2f"],"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-18570295e5709f36a4382e3ded635972"],"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":"2026-06-17T02:56:21.413Z","value":"3.5 LOW (2.0)","meaning":"nvd@nist.gov severity; no combined Null risk score.","source_id":"sr-1653a164e938b60a2dd610440a8f24ab"},{"kind":"CVSS","as_of":"2026-06-17T02:56:21.413Z","value":"2.8 LOW (3.1)","meaning":"security-advisories@github.com severity; no combined Null risk score.","source_id":"sr-1653a164e938b60a2dd610440a8f24ab"},{"kind":"CVSS","as_of":"2026-06-17T02:56:21.413Z","value":"5.4 MEDIUM (3.1)","meaning":"nvd@nist.gov severity; no combined Null risk score.","source_id":"sr-1653a164e938b60a2dd610440a8f24ab"},{"kind":"EPSS","as_of":"2026-10-31T12:00:27.000Z","value":"0.465%","meaning":"FIRST EPSS model v2026.06.15; exploitation probability over 30 days, percentile 0.40271. Missing scores are unknown.","source_id":"sr-18570295e5709f36a4382e3ded635972"}],"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-4d2a04f8ed80a585fdfad07f53fdde2f","url":"https://github.com/advisories/GHSA-fx3v-553x-3c4q","basis":"vendor_advisory","notes":"GitHub-origin advisory, CC-BY-4.0; OSV is an aggregate copy, not independent corroboration.","title":"GHSA-fx3v-553x-3c4q","publisher":"GitHub Advisory Database via OSV","observed_at":"2026-10-31T21:42:20.408Z"},{"id":"sr-1653a164e938b60a2dd610440a8f24ab","url":"https://nvd.nist.gov/vuln/detail/CVE-2020-15249","basis":"official_catalog","notes":"This product uses data from the NVD API but is not endorsed or certified by the NVD.","title":"CVE-2020-15249","publisher":"NIST National Vulnerability Database","observed_at":"2026-10-31T22:07:06.394Z"},{"id":"sr-18570295e5709f36a4382e3ded635972","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-2020-15249","publisher":"FIRST EPSS","observed_at":"2026-10-31T22:06:03.704Z"}],"affected_context":[{"certainty":"source_listed","source_ids":["sr-4d2a04f8ed80a585fdfad07f53fdde2f"],"technology":"october/backend","known_exclusions":[],"conditions_summary":"### Impact\nBackend users with access to upload files were permitted to upload SVG files without any sanitization applied to the uploaded files. Since SVG files support being parsed as HTML by browsers, this means that they could theoretically upload Javascript that would be executed on a path under the website's domain (i.e. /storage/app/media/evil.svg), but they would have to convince their target to visit that location directly in the target's browser as the backend does not display SVGs inline anywhere, SVGs are only displayed as image resources in the backend and are thus unable to be executed.\n\n### Patches\nIssue has been patched in Build 469 (v1.0.469) & v1.1.0.\n\n### Workarounds\nApply https://github.com/octobercms/library/commit/80aab47f044a2660aa352450f55137598f362aa4 to your installation manually if unable to upgrade to Build 469 or v1.1.0.\n\n### References\nReported by Hoan Hoang\n\n### For more information\nIf you have any questions or comments about this advisory:\n* Email us at hello@octobercms.com\n\n### Threat assessment:\n<img width=\"1107\" alt=\"Screen Shot 2020-10-10 at 1 47 49 PM\" src=\"https://user-images.githubuserc","public_affected_ranges":["ECOSYSTEM: introduced 1.0.319; fixed 1.0.469"]}],"null_published_at":"2026-10-31T22:27:06.727Z","source_updated_at":"2026-07-08T06:27:24.116Z","source_disclosed_at":"2020-11-23T19:47:59.000Z","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":"2026-10-31T21:42:20.408Z"},{"id":"NVI-00003848","kind":"vulnerability","title":"Stored XSS by authenticated backend user with access to upload files","revision":1,"unknowns":["Customer inventory, deployment, reachability and exploitation have not been inspected."],"lifecycle":"active","identifiers":["GHSA-fx3v-553x-3c4q","CVE-2020-15249"],"plain_summary":"OSV carries this publisher advisory for october/backend. 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 1.0.469 for october/backend. Confirm the publisher’s latest guidance.","source_ids":["sr-4d2a04f8ed80a585fdfad07f53fdde2f"],"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-4d2a04f8ed80a585fdfad07f53fdde2f","url":"https://github.com/advisories/GHSA-fx3v-553x-3c4q","basis":"vendor_advisory","notes":"GitHub-origin advisory, CC-BY-4.0; OSV is an aggregate copy, not independent corroboration.","title":"GHSA-fx3v-553x-3c4q","publisher":"GitHub Advisory Database via OSV","observed_at":"2026-10-31T21:42:20.408Z"}],"affected_context":[{"certainty":"source_listed","source_ids":["sr-4d2a04f8ed80a585fdfad07f53fdde2f"],"technology":"october/backend","known_exclusions":[],"conditions_summary":"### Impact\nBackend users with access to upload files were permitted to upload SVG files without any sanitization applied to the uploaded files. Since SVG files support being parsed as HTML by browsers, this means that they could theoretically upload Javascript that would be executed on a path under the website's domain (i.e. /storage/app/media/evil.svg), but they would have to convince their target to visit that location directly in the target's browser as the backend does not display SVGs inline anywhere, SVGs are only displayed as image resources in the backend and are thus unable to be executed.\n\n### Patches\nIssue has been patched in Build 469 (v1.0.469) & v1.1.0.\n\n### Workarounds\nApply https://github.com/octobercms/library/commit/80aab47f044a2660aa352450f55137598f362aa4 to your installation manually if unable to upgrade to Build 469 or v1.1.0.\n\n### References\nReported by Hoan Hoang\n\n### For more information\nIf you have any questions or comments about this advisory:\n* Email us at hello@octobercms.com\n\n### Threat assessment:\n<img width=\"1107\" alt=\"Screen Shot 2020-10-10 at 1 47 49 PM\" src=\"https://user-images.githubuserc","public_affected_ranges":["ECOSYSTEM: introduced 1.0.319; fixed 1.0.469"]}],"null_published_at":"2026-10-31T22:12:52.599Z","source_updated_at":"2026-07-08T06:27:24.116Z","source_disclosed_at":"2020-11-23T19:47:59.000Z","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":"2026-10-31T21:42:20.408Z"}],"next_cursor":null,"snapshot_revision":"42594"}