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{"cveTags": [], "descriptions": [{"lang": "en", "value": "Slack Nebula before 1.9.7 mishandles CIDR in some configurations and thus accepts arbitrary source IP addresses within the Nebula network."}], "id": "CVE-2025-62820", "lastModified": "2025-10-23T04:18:57.453", "metrics": {"cvssMetricV31": [{"cvssData": {"attackComplexity": "HIGH", "attackVector": "NETWORK", "availabilityImpact": "LOW", "baseScore": 4.9, "baseSeverity": "MEDIUM", "confidentialityImpact": "NONE", "integrityImpact": "LOW", "privilegesRequired": "LOW", "scope": "CHANGED", "userInteraction": "NONE", "vectorString": "CVSS:3.1/AV:N/AC:H/PR:L/UI:N/S:C/C:N/I:L/A:L", "version": "3.1"}, "exploitabilityScore": 1.8, "impactScore": 2.7, "source": "cve@mitre.org", "type": "Secondary"}]}, "published": "2025-10-23T04:18:57.453", "references": [{"source": "cve@mitre.org", "url": "https://github.com/slackhq/nebula/pull/1493"}, {"source": "cve@mitre.org", "url": "https://github.com/slackhq/nebula/pull/1494"}], "sourceIdentifier": "cve@mitre.org", "vulnStatus": "Received", "weaknesses": [{"description": [{"lang": "en", "value": "CWE-420"}], "source": "cve@mitre.org", "type": "Primary"}]}

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