CVE-2026-1847

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{}

{"affected": [{"configurations": [{"platform": null, "status": "affected", "versions": {"scheme": "generic", "value": "[8.0,8.0.18)"}}, {"platform": null, "status": "affected", "versions": {"scheme": "generic", "value": "[7.0,7.0.29)"}}], "product": "mongodb", "vendor": "mongodb"}], "analysis": {"en": {"generated_at": "2026-04-18T12:45:04.961806+00:00", "value": {"mitigation_remediation": ["Check the latest MongoDB Server release notes for a fix related to SERVER-113532 and upgrade if available.", "Enforce a stricter maximum document size on the replica set to prevent insertion of oversized documents.", "Monitor replication lag and ensure secondaries can fetch the oplog; adjust oplog window or resource limits if necessary."], "summary": {"action": "Monitor", "impact": "Server crash (Denial of Service)"}, "threat_synthesis": {"affected_systems": "MongoDB Inc. MongoDB Server is affected. No specific version information is provided, so all installations may potentially be vulnerable until further details are released.", "description_and_impact": "Inserting special large documents into a MongoDB replica set can cause secondary members to fail fetching the oplog from the primary, which stalls replication and may lead to a server crash. The result is a denial\u2011of\u2011service condition that can make the affected MongoDB instance unavailable.", "risk_and_exploitability": "The CVSS score of 7.1 indicates moderate to high severity, while the EPSS score of less than 1% suggests a low likelihood of exploitation in the wild. The vulnerability is not listed in CISA\u2019s KEV catalog. Based on the description, the likely attack vector is the transmission of unusually large documents to a secondary node in a replica set, which requires that the attacker can write data to the database and that the replica set configuration does not restrict document size."}}}}, "created": "2026-02-10T21:33:27.950408+00:00", "updated": "2026-04-18T12:45:45.677228+00:00", "vendors": ["mongodb", "mongodb$PRODUCT$mongodb"]}