{"metadata": {"vulnerability": "CVE-2020-26257", "count": 38, "kinds": {"milestone": 7, "sighting": 11, "kev": 0, "other": 20}}, "data": [{"timestamp": "2020-10-01T00:00:00Z", "date_only": false, "value": "2020-10-01T00:00:00.000Z", "kind": "milestone", "label": "Reserved", "source": "cvelistv5", "record": "CVE-2020-26257", "field": "cveMetadata.dateReserved"}, {"timestamp": "2020-12-09T00:00:00Z", "date_only": true, "value": "2020-12-09", "kind": "other", "label": "Pubdate", "source": "gsd \u00b7 GSD-2020-26257", "record": "GSD-2020-26257", "field": "namespaces.gitlab.com.advisories.0.pubdate"}, {"timestamp": "2020-12-09T18:21:29Z", "date_only": false, "value": "2020-12-09T18:21:29Z", "kind": "milestone", "label": "Published", "source": "github \u00b7 GHSA-HXMP-PQCH-C8MM", "record": "GHSA-HXMP-PQCH-C8MM", "field": "published"}, {"timestamp": "2020-12-09T18:25:15Z", "date_only": false, "value": "2020-12-09T18:25:15.000Z", "kind": "milestone", "label": "Published", "source": "cvelistv5", "record": "CVE-2020-26257", "field": "cveMetadata.datePublished"}, {"timestamp": "2020-12-09T19:15:00Z", "date_only": false, "value": "2020-12-09T19:15:00Z", "kind": "other", "label": "Nvd published at", "source": "github \u00b7 GHSA-HXMP-PQCH-C8MM", "record": "GHSA-HXMP-PQCH-C8MM", "field": "database_specific.nvd_published_at"}, {"timestamp": "2020-12-09T19:15:00Z", "date_only": false, "value": "2020-12-09T19:15:00Z", "kind": "milestone", "label": "Published", "source": "osv_ubuntu \u00b7 UBUNTU-CVE-2020-26257", "record": "UBUNTU-CVE-2020-26257", "field": "published"}, {"timestamp": "2020-12-09T19:15:00Z", "date_only": false, "value": "2020-12-09T19:15:00Z", "kind": "milestone", "label": "Published", "source": "pysec \u00b7 PYSEC-2020-236", "record": "PYSEC-2020-236", "field": "published"}, {"timestamp": "2020-12-09T19:15:00Z", "date_only": false, "value": "2020-12-09T19:15Z", "kind": "other", "label": "Published Date", "source": "gsd \u00b7 GSD-2020-26257", "record": "GSD-2020-26257", "field": "namespaces.nvd.nist.gov.publishedDate"}, {"timestamp": "2020-12-09T19:15:11.500Z", "date_only": false, "value": "2020-12-09T19:15:11.500", "kind": "milestone", "label": "Published", "source": "fkie_nvd \u00b7 FKIE_CVE-2020-26257", "record": "FKIE_CVE-2020-26257", "field": "published"}, {"timestamp": "2020-12-09T22:32:43Z", "date_only": false, "value": "2020-12-09T22:32:43.000000Z", "kind": "sighting", "label": "Seen", "source": "https://t.me/cibsecurity/18166", "record": "CVE-2020-26257", "field": "creation_timestamp", "uuid": "aa08a41f-b165-4ff0-88a4-2ad20a3201f3", "content": "\u203c CVE-2020-26257 \u203c\n\nMatrix is an ecosystem for open federated Instant Messaging and VoIP. Synapse is a reference \"homeserver\" implementation of Matrix. A malicious or poorly-implemented homeserver can inject malformed events into a room by specifying a different room id in the path of a `/send_join`, `/send_leave`, `/invite` or `/exchange_third_party_invite` request. This can lead to a denial of service in which future events will not be correctly sent to other servers over federation. This affects any server which accepts federation requests from untrusted servers. The Matrix Synapse reference implementation before version 1.23.1 the implementation is vulnerable to this injection attack. Issue is fixed in version 1.23.1. As a workaround homeserver administrators could limit access to the federation API to trusted servers (for example via `federation_domain_whitelist`).\n\n\ud83d\udcd6 Read\n\nvia \"National Vulnerability Database\".", "url": "https://t.me/cibsecurity/18166"}, {"timestamp": "2020-12-09T22:53:09Z", "date_only": false, "value": "2020-12-09T22:53:09.000000Z", "kind": "sighting", "label": "Seen", "source": "https://t.me/cibsecurity/18205", "record": "CVE-2020-26257", "field": "creation_timestamp", "uuid": "2e7d09ff-beec-44e7-949b-059cc530082a", "content": "\u203c CVE-2020-26257 \u203c\n\nMatrix is an ecosystem for open federated Instant Messaging and VoIP. Synapse is a reference \"homeserver\" implementation of Matrix. A malicious or poorly-implemented homeserver can inject malformed events into a room by specifying a different room id in the path of a `/send_join`, `/send_leave`, `/invite` or `/exchange_third_party_invite` request. This can lead to a denial of service in which future events will not be correctly sent to other servers over federation. This affects any server which accepts federation requests from untrusted servers. The Matrix Synapse reference implementation before version 1.23.1 the implementation is vulnerable to this injection attack. Issue is fixed in version 1.23.1. As a workaround homeserver administrators could limit access to the federation API to trusted servers (for example via `federation_domain_whitelist`).\n\n\ud83d\udcd6 Read\n\nvia \"National Vulnerability Database\".", "url": "https://t.me/cibsecurity/18205"}, {"timestamp": "2020-12-09T23:23:11Z", "date_only": false, "value": "2020-12-09T23:23:11.000000Z", "kind": "sighting", "label": "Seen", "source": "https://t.me/cibsecurity/18224", "record": "CVE-2020-26257", "field": "creation_timestamp", "uuid": "ac89e695-7d1b-4bcd-b247-b92ac6b88aab", "content": "\u203c CVE-2020-26257 \u203c\n\nMatrix is an ecosystem for open federated Instant Messaging and VoIP. Synapse is a reference \"homeserver\" implementation of Matrix. A malicious or poorly-implemented homeserver can inject malformed events into a room by specifying a different room id in the path of a `/send_join`, `/send_leave`, `/invite` or `/exchange_third_party_invite` request. This can lead to a denial of service in which future events will not be correctly sent to other servers over federation. This affects any server which accepts federation requests from untrusted servers. The Matrix Synapse reference implementation before version 1.23.1 the implementation is vulnerable to this injection attack. Issue is fixed in version 1.23.1. As a workaround homeserver administrators could limit access to the federation API to trusted servers (for example via `federation_domain_whitelist`).\n\n\ud83d\udcd6 Read\n\nvia \"National Vulnerability Database\".", "url": "https://t.me/cibsecurity/18224"}, {"timestamp": "2020-12-09T23:25:39Z", "date_only": false, "value": "2020-12-09T23:25:39.000000Z", "kind": "sighting", "label": "Seen", "source": "https://t.me/cibsecurity/18244", "record": "CVE-2020-26257", "field": "creation_timestamp", "uuid": "fb2f4ba4-b5b4-4dfc-9f31-502543b91d03", "content": "\u203c CVE-2020-26257 \u203c\n\nMatrix is an ecosystem for open federated Instant Messaging and VoIP. Synapse is a reference \"homeserver\" implementation of Matrix. A malicious or poorly-implemented homeserver can inject malformed events into a room by specifying a different room id in the path of a `/send_join`, `/send_leave`, `/invite` or `/exchange_third_party_invite` request. This can lead to a denial of service in which future events will not be correctly sent to other servers over federation. This affects any server which accepts federation requests from untrusted servers. The Matrix Synapse reference implementation before version 1.23.1 the implementation is vulnerable to this injection attack. Issue is fixed in version 1.23.1. As a workaround homeserver administrators could limit access to the federation API to trusted servers (for example via `federation_domain_whitelist`).\n\n\ud83d\udcd6 Read\n\nvia \"National Vulnerability Database\".", "url": "https://t.me/cibsecurity/18244"}, {"timestamp": "2020-12-10T00:23:11Z", "date_only": false, "value": "2020-12-10T00:23:11.000000Z", "kind": "sighting", "label": "Seen", "source": "https://t.me/cibsecurity/18263", "record": "CVE-2020-26257", "field": "creation_timestamp", "uuid": "d159c2bb-ffbc-4c53-a3c8-4312b4280488", "content": "\u203c CVE-2020-26257 \u203c\n\nMatrix is an ecosystem for open federated Instant Messaging and VoIP. Synapse is a reference \"homeserver\" implementation of Matrix. A malicious or poorly-implemented homeserver can inject malformed events into a room by specifying a different room id in the path of a `/send_join`, `/send_leave`, `/invite` or `/exchange_third_party_invite` request. This can lead to a denial of service in which future events will not be correctly sent to other servers over federation. This affects any server which accepts federation requests from untrusted servers. The Matrix Synapse reference implementation before version 1.23.1 the implementation is vulnerable to this injection attack. Issue is fixed in version 1.23.1. As a workaround homeserver administrators could limit access to the federation API to trusted servers (for example via `federation_domain_whitelist`).\n\n\ud83d\udcd6 Read\n\nvia \"National Vulnerability Database\".", "url": "https://t.me/cibsecurity/18263"}, {"timestamp": "2020-12-10T00:25:31Z", "date_only": false, "value": "2020-12-10T00:25:31.000000Z", "kind": "sighting", "label": "Seen", "source": "https://t.me/cibsecurity/18283", "record": "CVE-2020-26257", "field": "creation_timestamp", "uuid": "f42d8752-b8f1-4dec-b5e2-8694081f8b76", "content": "\u203c CVE-2020-26257 \u203c\n\nMatrix is an ecosystem for open federated Instant Messaging and VoIP. Synapse is a reference \"homeserver\" implementation of Matrix. A malicious or poorly-implemented homeserver can inject malformed events into a room by specifying a different room id in the path of a `/send_join`, `/send_leave`, `/invite` or `/exchange_third_party_invite` request. This can lead to a denial of service in which future events will not be correctly sent to other servers over federation. This affects any server which accepts federation requests from untrusted servers. The Matrix Synapse reference implementation before version 1.23.1 the implementation is vulnerable to this injection attack. Issue is fixed in version 1.23.1. As a workaround homeserver administrators could limit access to the federation API to trusted servers (for example via `federation_domain_whitelist`).\n\n\ud83d\udcd6 Read\n\nvia \"National Vulnerability Database\".", "url": "https://t.me/cibsecurity/18283"}, {"timestamp": "2020-12-10T00:32:49Z", "date_only": false, "value": "2020-12-10T00:32:49.000000Z", "kind": "sighting", "label": "Seen", "source": "https://t.me/cibsecurity/18292", "record": "CVE-2020-26257", "field": "creation_timestamp", "uuid": "04c812a5-6885-4485-be46-86c31421021c", "content": "\u203c CVE-2020-26257 \u203c\n\nMatrix is an ecosystem for open federated Instant Messaging and VoIP. Synapse is a reference \"homeserver\" implementation of Matrix. A malicious or poorly-implemented homeserver can inject malformed events into a room by specifying a different room id in the path of a `/send_join`, `/send_leave`, `/invite` or `/exchange_third_party_invite` request. This can lead to a denial of service in which future events will not be correctly sent to other servers over federation. This affects any server which accepts federation requests from untrusted servers. The Matrix Synapse reference implementation before version 1.23.1 the implementation is vulnerable to this injection attack. Issue is fixed in version 1.23.1. As a workaround homeserver administrators could limit access to the federation API to trusted servers (for example via `federation_domain_whitelist`).\n\n\ud83d\udcd6 Read\n\nvia \"National Vulnerability Database\".", "url": "https://t.me/cibsecurity/18292"}, {"timestamp": "2020-12-10T00:40:51Z", "date_only": false, "value": "2020-12-10T00:40:51.000000Z", "kind": "sighting", "label": "Seen", "source": "https://t.me/cibsecurity/18312", "record": "CVE-2020-26257", "field": "creation_timestamp", "uuid": "c1d01632-cd42-4c4b-ba21-c0e2b2a0de85", "content": "\u203c CVE-2020-26257 \u203c\n\nMatrix is an ecosystem for open federated Instant Messaging and VoIP. Synapse is a reference \"homeserver\" implementation of Matrix. A malicious or poorly-implemented homeserver can inject malformed events into a room by specifying a different room id in the path of a `/send_join`, `/send_leave`, `/invite` or `/exchange_third_party_invite` request. This can lead to a denial of service in which future events will not be correctly sent to other servers over federation. This affects any server which accepts federation requests from untrusted servers. The Matrix Synapse reference implementation before version 1.23.1 the implementation is vulnerable to this injection attack. Issue is fixed in version 1.23.1. As a workaround homeserver administrators could limit access to the federation API to trusted servers (for example via `federation_domain_whitelist`).\n\n\ud83d\udcd6 Read\n\nvia \"National Vulnerability Database\".", "url": "https://t.me/cibsecurity/18312"}, {"timestamp": "2020-12-10T01:22:55Z", "date_only": false, "value": "2020-12-10T01:22:55.000000Z", "kind": "sighting", "label": "Seen", "source": "https://t.me/cibsecurity/18331", "record": "CVE-2020-26257", "field": "creation_timestamp", "uuid": "69eb30e7-2d57-493d-8744-1916682d484f", "content": "\u203c CVE-2020-26257 \u203c\n\nMatrix is an ecosystem for open federated Instant Messaging and VoIP. Synapse is a reference \"homeserver\" implementation of Matrix. A malicious or poorly-implemented homeserver can inject malformed events into a room by specifying a different room id in the path of a `/send_join`, `/send_leave`, `/invite` or `/exchange_third_party_invite` request. This can lead to a denial of service in which future events will not be correctly sent to other servers over federation. This affects any server which accepts federation requests from untrusted servers. The Matrix Synapse reference implementation before version 1.23.1 the implementation is vulnerable to this injection attack. Issue is fixed in version 1.23.1. As a workaround homeserver administrators could limit access to the federation API to trusted servers (for example via `federation_domain_whitelist`).\n\n\ud83d\udcd6 Read\n\nvia \"National Vulnerability Database\".", "url": "https://t.me/cibsecurity/18331"}, {"timestamp": "2020-12-10T01:25:19Z", "date_only": false, "value": "2020-12-10T01:25:19.000000Z", "kind": "sighting", "label": "Seen", "source": "https://t.me/cibsecurity/18351", "record": "CVE-2020-26257", "field": "creation_timestamp", "uuid": "ada2a02e-6f28-44b6-96a9-e4125d903acd", "content": "\u203c CVE-2020-26257 \u203c\n\nMatrix is an ecosystem for open federated Instant Messaging and VoIP. Synapse is a reference \"homeserver\" implementation of Matrix. A malicious or poorly-implemented homeserver can inject malformed events into a room by specifying a different room id in the path of a `/send_join`, `/send_leave`, `/invite` or `/exchange_third_party_invite` request. This can lead to a denial of service in which future events will not be correctly sent to other servers over federation. This affects any server which accepts federation requests from untrusted servers. The Matrix Synapse reference implementation before version 1.23.1 the implementation is vulnerable to this injection attack. Issue is fixed in version 1.23.1. As a workaround homeserver administrators could limit access to the federation API to trusted servers (for example via `federation_domain_whitelist`).\n\n\ud83d\udcd6 Read\n\nvia \"National Vulnerability Database\".", "url": "https://t.me/cibsecurity/18351"}, {"timestamp": "2020-12-10T02:25:09Z", "date_only": false, "value": "2020-12-10T02:25:09.000000Z", "kind": "sighting", "label": "Seen", "source": "https://t.me/cibsecurity/18371", "record": "CVE-2020-26257", "field": "creation_timestamp", "uuid": "16bf090b-c5ed-4655-8ad8-f682a387d2fc", "content": "\u203c CVE-2020-26257 \u203c\n\nMatrix is an ecosystem for open federated Instant Messaging and VoIP. Synapse is a reference \"homeserver\" implementation of Matrix. A malicious or poorly-implemented homeserver can inject malformed events into a room by specifying a different room id in the path of a `/send_join`, `/send_leave`, `/invite` or `/exchange_third_party_invite` request. This can lead to a denial of service in which future events will not be correctly sent to other servers over federation. This affects any server which accepts federation requests from untrusted servers. The Matrix Synapse reference implementation before version 1.23.1 the implementation is vulnerable to this injection attack. Issue is fixed in version 1.23.1. As a workaround homeserver administrators could limit access to the federation API to trusted servers (for example via `federation_domain_whitelist`).\n\n\ud83d\udcd6 Read\n\nvia \"National Vulnerability Database\".", "url": "https://t.me/cibsecurity/18371"}, {"timestamp": "2020-12-11T00:00:00Z", "date_only": true, "value": "2020-12-11", "kind": "other", "label": "Submit Time", "source": "cnvd \u00b7 CNVD-2020-70960", "record": "CNVD-2020-70960", "field": "submitTime"}, {"timestamp": "2020-12-13T00:00:00Z", "date_only": true, "value": "2020-12-13", "kind": "other", "label": "Open Time", "source": "cnvd \u00b7 CNVD-2020-70960", "record": "CNVD-2020-70960", "field": "openTime"}, {"timestamp": "2020-12-19T00:00:00Z", "date_only": true, "value": "2020-12-19", "kind": "other", "label": "Date", "source": "gsd \u00b7 GSD-2020-26257", "record": "GSD-2020-26257", "field": "namespaces.gitlab.com.advisories.0.date"}, {"timestamp": "2020-12-19T02:06:07Z", "date_only": false, "value": "2020-12-19T02:06:07.000Z", "kind": "other", "label": "Updated", "source": "cvelistv5 / GitHub_M", "record": "CVE-2020-26257", "field": "containers.cna.providerMetadata.dateUpdated"}, {"timestamp": "2021-08-27T03:22:06.434Z", "date_only": false, "value": "2021-08-27T03:22:06.434071Z", "kind": "other", "label": "Updated", "source": "pysec \u00b7 PYSEC-2020-236", "record": "PYSEC-2020-236", "field": "modified"}, {"timestamp": "2022-10-12T14:01:00Z", "date_only": false, "value": "2022-10-12T14:01Z", "kind": "other", "label": "Last Modified Date", "source": "gsd \u00b7 GSD-2020-26257", "record": "GSD-2020-26257", "field": "namespaces.nvd.nist.gov.lastModifiedDate"}, {"timestamp": "2023-12-13T01:22:08.500Z", "date_only": false, "value": "2023-12-13T01:22:08.500012Z", "kind": "other", "label": "Updated", "source": "gsd \u00b7 GSD-2020-26257", "record": "GSD-2020-26257", "field": "gsd.osvSchema.modified"}, {"timestamp": "2024-06-15T00:00:00Z", "date_only": false, "value": "2024-06-15T00:00:00Z", "kind": "other", "label": "Advisory revision", "source": "csaf_opensuse \u00b7 OPENSUSE-SU-2024:11041-1", "record": "OPENSUSE-SU-2024:11041-1", "field": "document.tracking.revision_history.0.date"}, {"timestamp": "2024-06-15T00:00:00Z", "date_only": false, "value": "2024-06-15T00:00:00Z", "kind": "other", "label": "Date", "source": "csaf_opensuse \u00b7 OPENSUSE-SU-2024:11041-1", "record": "OPENSUSE-SU-2024:11041-1", "field": "vulnerabilities.0.threats.0.date"}, {"timestamp": "2024-06-15T00:00:00Z", "date_only": false, "value": "2024-06-15T00:00:00Z", "kind": "other", "label": "Document generated", "source": "csaf_opensuse \u00b7 OPENSUSE-SU-2024:11041-1", "record": "OPENSUSE-SU-2024:11041-1", "field": "document.tracking.generator.date"}, {"timestamp": "2024-06-15T00:00:00Z", "date_only": false, "value": "2024-06-15T00:00:00Z", "kind": "milestone", "label": "Published", "source": "csaf_opensuse \u00b7 OPENSUSE-SU-2024:11041-1", "record": "OPENSUSE-SU-2024:11041-1", "field": "document.tracking.initial_release_date"}, {"timestamp": "2024-08-04T15:56:03.561Z", "date_only": false, "value": "2024-08-04T15:56:03.561Z", "kind": "other", "label": "Updated", "source": "cvelistv5", "record": "CVE-2020-26257", "field": "cveMetadata.dateUpdated"}, {"timestamp": "2024-08-04T15:56:03.561Z", "date_only": false, "value": "2024-08-04T15:56:03.561Z", "kind": "other", "label": "Updated", "source": "cvelistv5 / CVE", "record": "CVE-2020-26257", "field": "containers.adp.0.providerMetadata.dateUpdated"}, {"timestamp": "2024-09-24T17:44:50Z", "date_only": false, "value": "2024-09-24T17:44:50Z", "kind": "other", "label": "Updated", "source": "github \u00b7 GHSA-HXMP-PQCH-C8MM", "record": "GHSA-HXMP-PQCH-C8MM", "field": "modified"}, {"timestamp": "2025-10-24T04:48:47Z", "date_only": false, "value": "2025-10-24T04:48:47Z", "kind": "other", "label": "Updated", "source": "osv_ubuntu \u00b7 UBUNTU-CVE-2020-26257", "record": "UBUNTU-CVE-2020-26257", "field": "modified"}, {"timestamp": "2026-06-17T03:07:56.210Z", "date_only": false, "value": "2026-06-17T03:07:56.210", "kind": "other", "label": "Updated", "source": "fkie_nvd \u00b7 FKIE_CVE-2020-26257", "record": "FKIE_CVE-2020-26257", "field": "lastModified"}, {"timestamp": "2026-09-20T20:10:14Z", "date_only": false, "value": "2026-09-20T20:10:14Z", "kind": "other", "label": "Advisory revision", "source": "csaf_opensuse \u00b7 OPENSUSE-SU-2024:11041-1", "record": "OPENSUSE-SU-2024:11041-1", "field": "document.tracking.revision_history.1.date"}, {"timestamp": "2026-09-20T20:10:14Z", "date_only": false, "value": "2026-09-20T20:10:14Z", "kind": "other", "label": "Updated", "source": "csaf_opensuse \u00b7 OPENSUSE-SU-2024:11041-1", "record": "OPENSUSE-SU-2024:11041-1", "field": "document.tracking.current_release_date"}]}