{"metadata": {"vulnerability": "cve-2021-21249", "count": 13, "kinds": {"milestone": 3, "sighting": 1, "kev": 0, "other": 9}}, "data": [{"timestamp": "2020-12-22T00:00:00Z", "date_only": false, "value": "2020-12-22T00:00:00.000Z", "kind": "milestone", "label": "Reserved", "source": "cvelistv5", "record": "cve-2021-21249", "field": "cveMetadata.dateReserved"}, {"timestamp": "2021-01-15T20:10:31Z", "date_only": false, "value": "2021-01-15T20:10:31.000Z", "kind": "milestone", "label": "Published", "source": "cvelistv5", "record": "cve-2021-21249", "field": "cveMetadata.datePublished", "metric_role": "disclosure", "metric_basis": "recorded_event"}, {"timestamp": "2021-01-15T20:10:31Z", "date_only": false, "value": "2021-01-15T20:10:31.000Z", "kind": "other", "label": "Updated", "source": "cvelistv5 / GitHub_M", "record": "cve-2021-21249", "field": "containers.cna.providerMetadata.dateUpdated"}, {"timestamp": "2021-01-15T21:15:00Z", "date_only": false, "value": "2021-01-15T21:15Z", "kind": "other", "label": "Published Date", "source": "gsd \u00b7 GSD-2021-21249", "record": "GSD-2021-21249", "field": "namespaces.nvd.nist.gov.publishedDate", "linked_record": true}, {"timestamp": "2021-01-15T21:15:13.740Z", "date_only": false, "value": "2021-01-15T21:15:13.740", "kind": "milestone", "label": "Published", "source": "fkie_nvd \u00b7 FKIE_CVE-2021-21249", "record": "FKIE_CVE-2021-21249", "field": "published", "metric_role": "disclosure", "metric_basis": "recorded_event", "linked_record": true}, {"timestamp": "2021-01-16T00:51:27Z", "date_only": false, "value": "2021-01-16T00:51:27.000000Z", "kind": "sighting", "label": "Published proof of concept", "source": "https://t.me/cibsecurity/22232", "record": "CVE-2021-21249", "field": "creation_timestamp", "uuid": "99c8b023-ecd9-4aa2-8836-6fe88aa7fef5", "content": "\u203c CVE-2021-21249 \u203c\n\nOneDev is an all-in-one devops platform. In OneDev before version 4.0.3, there is an issue involving YAML parsing which can lead to post-auth remote code execution. In order to parse and process YAML files, OneDev uses SnakeYaml which by default (when not using `SafeConstructor`) allows the instantiation of arbitrary classes. We can leverage that to run arbitrary code by instantiating classes such as `javax.script.ScriptEngineManager` and using `URLClassLoader` to load the script engine provider, resulting in the instantiation of a user controlled class. For a full example refer to the referenced GHSA. This issue was addressed in 4.0.3 by only allowing certain known classes to be deserialized\n\n\ud83d\udcd6 Read\n\nvia \"National Vulnerability Database\".", "url": "https://t.me/cibsecurity/22232", "metric_role": "exploit_publication", "metric_basis": "sighting_report"}, {"timestamp": "2021-01-25T00:00:00Z", "date_only": true, "value": "2021-01-25", "kind": "other", "label": "Submit Time", "source": "cnvd \u00b7 CNVD-2021-06530", "record": "CNVD-2021-06530", "field": "submitTime", "linked_record": true}, {"timestamp": "2021-01-26T00:00:00Z", "date_only": true, "value": "2021-01-26", "kind": "other", "label": "Open Time", "source": "cnvd \u00b7 CNVD-2021-06530", "record": "CNVD-2021-06530", "field": "openTime", "linked_record": true}, {"timestamp": "2022-04-26T16:13:00Z", "date_only": false, "value": "2022-04-26T16:13Z", "kind": "other", "label": "Last Modified Date", "source": "gsd \u00b7 GSD-2021-21249", "record": "GSD-2021-21249", "field": "namespaces.nvd.nist.gov.lastModifiedDate", "linked_record": true}, {"timestamp": "2023-12-13T01:23:10.475Z", "date_only": false, "value": "2023-12-13T01:23:10.475697Z", "kind": "other", "label": "Updated", "source": "gsd \u00b7 GSD-2021-21249", "record": "GSD-2021-21249", "field": "gsd.osvSchema.modified", "linked_record": true}, {"timestamp": "2024-08-03T18:09:15.155Z", "date_only": false, "value": "2024-08-03T18:09:15.155Z", "kind": "other", "label": "Updated", "source": "cvelistv5", "record": "cve-2021-21249", "field": "cveMetadata.dateUpdated"}, {"timestamp": "2024-08-03T18:09:15.155Z", "date_only": false, "value": "2024-08-03T18:09:15.155Z", "kind": "other", "label": "Updated", "source": "cvelistv5 / CVE", "record": "cve-2021-21249", "field": "containers.adp.0.providerMetadata.dateUpdated"}, {"timestamp": "2026-06-17T03:35:07.610Z", "date_only": false, "value": "2026-06-17T03:35:07.610", "kind": "other", "label": "Updated", "source": "fkie_nvd \u00b7 FKIE_CVE-2021-21249", "record": "FKIE_CVE-2021-21249", "field": "lastModified", "linked_record": true}], "metrics": {"as_of": "2026-11-11T18:35:23.920Z", "anchors": {"origin": {"timestamp": "2021-01-15T20:10:31Z", "date_only": false, "value": "2021-01-15T20:10:31.000Z", "kind": "milestone", "label": "Published", "source": "cvelistv5", "record": "cve-2021-21249", "field": "cveMetadata.datePublished", "metric_role": "disclosure", "metric_basis": "recorded_event"}, "discovery": null, "report": null, "acknowledgement": null, "disclosure": {"timestamp": "2021-01-15T20:10:31Z", "date_only": false, "value": "2021-01-15T20:10:31.000Z", "kind": "milestone", "label": "Published", "source": "cvelistv5", "record": "cve-2021-21249", "field": "cveMetadata.datePublished", "metric_role": "disclosure", "metric_basis": "recorded_event"}, "exploit_publication": {"timestamp": "2021-01-16T00:51:27Z", "date_only": false, "value": "2021-01-16T00:51:27.000000Z", "kind": "sighting", "label": "Published proof of concept", "source": "https://t.me/cibsecurity/22232", "record": "CVE-2021-21249", "field": "creation_timestamp", "uuid": "99c8b023-ecd9-4aa2-8836-6fe88aa7fef5", "content": "\u203c CVE-2021-21249 \u203c\n\nOneDev is an all-in-one devops platform. In OneDev before version 4.0.3, there is an issue involving YAML parsing which can lead to post-auth remote code execution. In order to parse and process YAML files, OneDev uses SnakeYaml which by default (when not using `SafeConstructor`) allows the instantiation of arbitrary classes. We can leverage that to run arbitrary code by instantiating classes such as `javax.script.ScriptEngineManager` and using `URLClassLoader` to load the script engine provider, resulting in the instantiation of a user controlled class. For a full example refer to the referenced GHSA. This issue was addressed in 4.0.3 by only allowing certain known classes to be deserialized\n\n\ud83d\udcd6 Read\n\nvia \"National Vulnerability Database\".", "url": "https://t.me/cibsecurity/22232", "metric_role": "exploit_publication", "metric_basis": "sighting_report"}, "exploitation": null, "patch": null}, "vendor_response_time": {"available": false, "missing": ["start", "end"]}, "time_to_exploit": {"available": false, "missing": ["end"]}, "disclosure_to_exploit": {"available": false, "missing": ["end"]}, "disclosure_to_exploit_publication": {"available": true, "seconds": 16856.0, "hours": 4.682222222222222, "days": 0.1950925925925926, "min_seconds": 16856.0, "max_seconds": 16856.0, "approximate": false, "ongoing": false, "order_known": true, "batch_listing": false, "end_before_start": false, "start": {"timestamp": "2021-01-15T20:10:31Z", "date_only": false, "value": "2021-01-15T20:10:31.000Z", "kind": "milestone", "label": "Published", "source": "cvelistv5", "record": "cve-2021-21249", "field": "cveMetadata.datePublished", "metric_role": "disclosure", "metric_basis": "recorded_event"}, "end": {"timestamp": "2021-01-16T00:51:27Z", "date_only": false, "value": "2021-01-16T00:51:27.000000Z", "kind": "sighting", "label": "Published proof of concept", "source": "https://t.me/cibsecurity/22232", "record": "CVE-2021-21249", "field": "creation_timestamp", "uuid": "99c8b023-ecd9-4aa2-8836-6fe88aa7fef5", "content": "\u203c CVE-2021-21249 \u203c\n\nOneDev is an all-in-one devops platform. In OneDev before version 4.0.3, there is an issue involving YAML parsing which can lead to post-auth remote code execution. In order to parse and process YAML files, OneDev uses SnakeYaml which by default (when not using `SafeConstructor`) allows the instantiation of arbitrary classes. We can leverage that to run arbitrary code by instantiating classes such as `javax.script.ScriptEngineManager` and using `URLClassLoader` to load the script engine provider, resulting in the instantiation of a user controlled class. For a full example refer to the referenced GHSA. This issue was addressed in 4.0.3 by only allowing certain known classes to be deserialized\n\n\ud83d\udcd6 Read\n\nvia \"National Vulnerability Database\".", "url": "https://t.me/cibsecurity/22232", "metric_role": "exploit_publication", "metric_basis": "sighting_report"}}, "time_to_patch": {"available": false, "missing": ["start", "end"]}, "total_time_to_patch": {"available": false, "missing": ["start", "end"]}, "disclosure_to_patch": {"available": false, "missing": ["end"]}, "time_unpatched": {"available": true, "seconds": 183680692.92, "hours": 51022.414699999994, "days": 2125.9339458333334, "min_seconds": 183680692.92, "max_seconds": 183680692.92, "approximate": false, "ongoing": true, "order_known": true, "batch_listing": false, "end_before_start": false, "start": {"timestamp": "2021-01-15T20:10:31Z", "date_only": false, "value": "2021-01-15T20:10:31.000Z", "kind": "milestone", "label": "Published", "source": "cvelistv5", "record": "cve-2021-21249", "field": "cveMetadata.datePublished", "metric_role": "disclosure", "metric_basis": "recorded_event"}, "end": {"timestamp": "2026-11-11T18:35:23.920Z", "date_only": false, "label": "As of", "source": "Calculation clock"}}, "exploitation_to_patch": {"available": false, "missing": ["start"]}, "exploit_publication_to_patch": {"available": true, "seconds": 183663836.92, "hours": 51017.732477777776, "days": 2125.738853240741, "min_seconds": 183663836.92, "max_seconds": 183663836.92, "approximate": false, "ongoing": true, "order_known": true, "batch_listing": false, "end_before_start": false, "start": {"timestamp": "2021-01-16T00:51:27Z", "date_only": false, "value": "2021-01-16T00:51:27.000000Z", "kind": "sighting", "label": "Published proof of concept", "source": "https://t.me/cibsecurity/22232", "record": "CVE-2021-21249", "field": "creation_timestamp", "uuid": "99c8b023-ecd9-4aa2-8836-6fe88aa7fef5", "content": "\u203c CVE-2021-21249 \u203c\n\nOneDev is an all-in-one devops platform. In OneDev before version 4.0.3, there is an issue involving YAML parsing which can lead to post-auth remote code execution. In order to parse and process YAML files, OneDev uses SnakeYaml which by default (when not using `SafeConstructor`) allows the instantiation of arbitrary classes. We can leverage that to run arbitrary code by instantiating classes such as `javax.script.ScriptEngineManager` and using `URLClassLoader` to load the script engine provider, resulting in the instantiation of a user controlled class. For a full example refer to the referenced GHSA. This issue was addressed in 4.0.3 by only allowing certain known classes to be deserialized\n\n\ud83d\udcd6 Read\n\nvia \"National Vulnerability Database\".", "url": "https://t.me/cibsecurity/22232", "metric_role": "exploit_publication", "metric_basis": "sighting_report"}, "end": {"timestamp": "2026-11-11T18:35:23.920Z", "date_only": false, "label": "As of", "source": "Calculation clock"}}}}