{"metadata": {"vulnerability": "cve-2021-25831", "count": 19, "kinds": {"milestone": 4, "sighting": 4, "kev": 0, "other": 11}}, "data": [{"timestamp": "2021-01-22T00:00:00Z", "date_only": false, "value": "2021-01-22T00:00:00.000Z", "kind": "milestone", "label": "Reserved", "source": "cvelistv5", "record": "cve-2021-25831", "field": "cveMetadata.dateReserved"}, {"timestamp": "2021-03-01T15:08:37Z", "date_only": false, "value": "2021-03-01T15:08:37.000Z", "kind": "milestone", "label": "Published", "source": "cvelistv5", "record": "cve-2021-25831", "field": "cveMetadata.datePublished"}, {"timestamp": "2021-03-01T16:15:00Z", "date_only": false, "value": "2021-03-01T16:15:00Z", "kind": "other", "label": "Nvd published at", "source": "github \u00b7 GHSA-M252-HX7Q-7P3H", "record": "GHSA-M252-HX7Q-7P3H", "field": "database_specific.nvd_published_at"}, {"timestamp": "2021-03-01T16:15:00Z", "date_only": false, "value": "2021-03-01T16:15Z", "kind": "other", "label": "Published Date", "source": "gsd \u00b7 GSD-2021-25831", "record": "GSD-2021-25831", "field": "namespaces.nvd.nist.gov.publishedDate"}, {"timestamp": "2021-03-01T16:15:14.353Z", "date_only": false, "value": "2021-03-01T16:15:14.353", "kind": "milestone", "label": "Published", "source": "fkie_nvd \u00b7 FKIE_CVE-2021-25831", "record": "FKIE_CVE-2021-25831", "field": "published"}, {"timestamp": "2021-03-01T18:43:15Z", "date_only": false, "value": "2021-03-01T18:43:15.000000Z", "kind": "sighting", "label": "Seen", "source": "https://t.me/cibsecurity/24297", "record": "CVE-2021-25831", "field": "creation_timestamp", "uuid": "facf8c6d-38c6-4727-9b60-300739be7325", "content": "\u203c CVE-2021-25831 \u203c\n\nA file extension handling issue was found in [core] module of ONLYOFFICE DocumentServer v4.0.0-9-v5.6.3. An attacker must request the conversion of the crafted file from PPTT into PPTX format. Using the chain of two other bugs related to improper string handling, a remote attacker can obtain remote code execution on DocumentServer.\n\n\ud83d\udcd6 Read\n\nvia \"National Vulnerability Database\".", "url": "https://t.me/cibsecurity/24297"}, {"timestamp": "2021-03-02T00:00:00Z", "date_only": true, "value": "2021-03-02", "kind": "other", "label": "Submit Time", "source": "cnvd \u00b7 CNVD-2021-17248", "record": "CNVD-2021-17248", "field": "submitTime"}, {"timestamp": "2021-03-02T12:29:24Z", "date_only": false, "value": "2021-03-02T12:29:24.000Z", "kind": "other", "label": "Updated", "source": "cvelistv5 / mitre", "record": "cve-2021-25831", "field": "containers.cna.providerMetadata.dateUpdated"}, {"timestamp": "2021-03-13T00:00:00Z", "date_only": true, "value": "2021-03-13", "kind": "other", "label": "Open Time", "source": "cnvd \u00b7 CNVD-2021-17248", "record": "CNVD-2021-17248", "field": "openTime"}, {"timestamp": "2021-03-15T19:53:00Z", "date_only": false, "value": "2021-03-15T19:53Z", "kind": "other", "label": "Last Modified Date", "source": "gsd \u00b7 GSD-2021-25831", "record": "GSD-2021-25831", "field": "namespaces.nvd.nist.gov.lastModifiedDate"}, {"timestamp": "2021-10-30T14:32:34Z", "date_only": false, "value": "2021-10-30T14:32:34.000000Z", "kind": "sighting", "label": "Published proof of concept", "source": "https://t.me/CyberSecurityTechnologies/4625", "record": "CVE-2021-25831", "field": "creation_timestamp", "uuid": "04f45545-9567-4c18-82d8-4c4ea982743c", "content": "#exploit\n1. CVE-2021-31862:\nSysAid 20.4.74 allows XSS via the KeepAlive.jsp stamp parameter without any authentication\nhttps://github.com/RobertDra/CVE-2021-31862\n\n2. Research and PoC exploits for ONLYOFFICE\n(CVE-2021-25829, CVE-2021-25830, CVE-2021-25831, CVE-2021-25832, CVE-2021-25833)\nhttps://github.com/merrychap/POC-onlyoffice/tree/master", "url": "https://t.me/CyberSecurityTechnologies/4625"}, {"timestamp": "2022-05-24T17:43:24Z", "date_only": false, "value": "2022-05-24T17:43:24Z", "kind": "milestone", "label": "Published", "source": "github \u00b7 GHSA-M252-HX7Q-7P3H", "record": "GHSA-M252-HX7Q-7P3H", "field": "published"}, {"timestamp": "2022-05-24T17:43:24Z", "date_only": false, "value": "2022-05-24T17:43:24Z", "kind": "other", "label": "Updated", "source": "github \u00b7 GHSA-M252-HX7Q-7P3H", "record": "GHSA-M252-HX7Q-7P3H", "field": "modified"}, {"timestamp": "2023-12-13T01:23:21.210Z", "date_only": false, "value": "2023-12-13T01:23:21.210500Z", "kind": "other", "label": "Updated", "source": "gsd \u00b7 GSD-2021-25831", "record": "GSD-2021-25831", "field": "gsd.osvSchema.modified"}, {"timestamp": "2024-08-03T20:11:28.475Z", "date_only": false, "value": "2024-08-03T20:11:28.475Z", "kind": "other", "label": "Updated", "source": "cvelistv5", "record": "cve-2021-25831", "field": "cveMetadata.dateUpdated"}, {"timestamp": "2024-08-03T20:11:28.475Z", "date_only": false, "value": "2024-08-03T20:11:28.475Z", "kind": "other", "label": "Updated", "source": "cvelistv5 / CVE", "record": "cve-2021-25831", "field": "containers.adp.0.providerMetadata.dateUpdated"}, {"timestamp": "2026-06-17T03:42:29.403Z", "date_only": false, "value": "2026-06-17T03:42:29.403", "kind": "other", "label": "Updated", "source": "fkie_nvd \u00b7 FKIE_CVE-2021-25831", "record": "FKIE_CVE-2021-25831", "field": "lastModified"}, {"timestamp": "2026-09-01T17:00:36.957Z", "date_only": false, "value": "2026-09-01T17:00:36.957116Z", "kind": "sighting", "label": "Seen", "source": "https://t.me/cissp/4713", "record": "CVE-2021-25831", "field": "creation_timestamp", "uuid": "a0b7cccd-d003-47d8-9c53-078c1d0bb554", "url": "https://t.me/cissp/4713"}, {"timestamp": "2026-09-10T16:00:05.428Z", "date_only": false, "value": "2026-09-10T16:00:05.428266Z", "kind": "sighting", "label": "Published proof of concept", "source": "https://t.me/cissp/4713", "record": "CVE-2021-25831", "field": "creation_timestamp", "uuid": "267fe60e-be36-4e75-8a28-52592bd7f07e", "url": "https://t.me/cissp/4713"}]}