{"id":"CVE-2025-62820","revision":"1da719b2e7d64b01b07eb44dc0bfae94","records":[{"revision":"1da719b2e7d64b01b07eb44dc0bfae94","observedAt":"2026-10-23T15:48:27.903+00:00","statement":{"source":"cve-program","id":"CVE-2025-62820","aliases":[],"title":"Slack Nebula before 1.9.7 mishandles CIDR in some configurations and thus accepts arbitrary source IP addresses within the Nebula network.","description":"Slack Nebula before 1.9.7 mishandles CIDR in some configurations and thus accepts arbitrary source IP addresses within the Nebula network.","state":0,"publishedAt":"2025-10-23T00:00:00+00:00","modifiedAt":"2025-10-23T14:35:19.815+00:00","affected":[{"ecosystem":"Vendor product","name":"Nebula","ranges":[],"versions":[],"rawVersionEvidence":"{\n                    \"defaultStatus\": \"unaffected\",\n                    \"product\": \"Nebula\",\n                    \"vendor\": \"Slack\",\n                    \"versions\": [\n                        {\n                            \"lessThan\": \"1.9.7\",\n                            \"status\": \"affected\",\n                            \"version\": \"0\",\n                            \"versionType\": \"semver\"\n                        }\n                    ]\n                }"}],"metrics":[{"system":"CVSS 3.1","vector":"CVSS:3.1/AV:N/AC:H/PR:L/UI:N/S:C/C:N/I:L/A:L","score":4.9,"severity":"MEDIUM"}],"references":["https://github.com/slackhq/nebula/pull/1493","https://github.com/slackhq/nebula/pull/1494"],"sourceUrl":"https://www.cve.org/CVERecord?id=CVE-2025-62820","license":"CVE Program Terms of Use","key":"cve-program:CVE-2025-62820","identifiers":["CVE-2025-62820"]},"retained":false,"historicalAffected":[]}],"coverage":[]}