{"schemaVersion":3,"id":"CVE-2025-62820","aliases":["CGA-8989-3g7g-3ff7","CGA-crvr-g978-cmrw","CGA-cv8x-89j7-wv4w","CGA-fx7q-g3f8-q992","CGA-h65w-crwv-7jj7","CGA-hp5g-2jv9-fxp8","CGA-hr7f-9cgh-gm6p","CGA-jjgm-cf24-rj48","CGA-mjhq-25p2-w335","CGA-p8jf-c7cw-h4h7","CGA-pjm7-cr5q-cw58","CGA-qxr8-9c5m-q6wx","CGA-w352-wmgx-9jqj","CGA-x3x4-g8g3-hrjf","GHSA-x6fh-7qmf-69xh","GO-2025-4068","CGA-288g-366c-5jhx","CGA-2pgr-fg2q-qrpv","CGA-43hx-xhhm-8hp4","CGA-5hvr-c3pw-6jw2","CGA-6r75-vjcr-wpr6","CGA-7fp8-r3mg-9mgr","CGA-cm39-q955-jxq9","CGA-gvfq-5frm-px47","CGA-q674-97rr-5hvx","CGA-qh84-wph2-hhhj"],"status":"published","duplicateOf":null,"title":null,"description":"Slack Nebula before 1.9.7 mishandles CIDR in some configurations and thus accepts arbitrary source IP addresses within the Nebula network.","dates":{"published":"2025-10-23T00:00:00.000Z","modified":"2025-10-23T14:35:19.815Z","reserved":null,"kevAdded":[],"kevDue":[]},"cvss":{"headline":{"score":4.9,"severity":"medium","version":"3.1","versionLabel":"v3.1","source":"CVE.org","vector":"CVSS:3.1/AV:N/AC:H/PR:L/UI:N/S:C/C:N/I:L/A:L","computed":false,"selection":"backend-summary"},"metrics":[{"version":"3.1","versionLabel":"v3.1","source":"CVE.org","score":4.9,"severity":"medium","vector":"CVSS:3.1/AV:N/AC:H/PR:L/UI:N/S:C/C:N/I:L/A:L","exploitability":null,"impact":null,"computed":false},{"version":"3.1","versionLabel":"v3.1","source":"OSV · Wolfi","score":4.9,"severity":"medium","vector":"CVSS:3.1/AV:N/AC:H/PR:L/UI:N/S:C/C:N/I:L/A:L","exploitability":4.6,"impact":4.5,"computed":true},{"version":"3.1","versionLabel":"v3.1","source":"OSV · Go","score":4.9,"severity":"medium","vector":"CVSS:3.1/AV:N/AC:H/PR:L/UI:N/S:C/C:N/I:L/A:L","exploitability":4.6,"impact":4.5,"computed":true},{"version":"3.1","versionLabel":"v3.1","source":"OSV · Chainguard","score":4.9,"severity":"medium","vector":"CVSS:3.1/AV:N/AC:H/PR:L/UI:N/S:C/C:N/I:L/A:L","exploitability":4.6,"impact":4.5,"computed":true},{"version":"3.1","versionLabel":"v3.1","source":"NVD","score":4.9,"severity":"medium","vector":"CVSS:3.1/AV:N/AC:H/PR:L/UI:N/S:C/C:N/I:L/A:L","exploitability":null,"impact":null,"computed":false}]},"epss":{"probability":0.0022,"percentile":0.11821,"severity":"low","asOf":"2026-10-21T00:00:00.000Z","change":{"pp":0.014999999999999996,"baselineDate":"2026-09-21T00:00:00.000Z","baselineScore":0.00205},"history":[{"date":"2026-09-14T00:00:00.000Z","score":0.00205,"percentile":null},{"date":"2026-09-15T00:00:00.000Z","score":0.00205,"percentile":null},{"date":"2026-09-16T00:00:00.000Z","score":0.00205,"percentile":null},{"date":"2026-09-17T00:00:00.000Z","score":0.00205,"percentile":null},{"date":"2026-09-18T00:00:00.000Z","score":0.00205,"percentile":null},{"date":"2026-09-19T00:00:00.000Z","score":0.00205,"percentile":null},{"date":"2026-09-20T00:00:00.000Z","score":0.00205,"percentile":null},{"date":"2026-09-21T00:00:00.000Z","score":0.00205,"percentile":null},{"date":"2026-09-22T00:00:00.000Z","score":0.00205,"percentile":null},{"date":"2026-09-23T00:00:00.000Z","score":0.0022,"percentile":null},{"date":"2026-09-24T00:00:00.000Z","score":0.0022,"percentile":null},{"date":"2026-09-25T00:00:00.000Z","score":0.0022,"percentile":null},{"date":"2026-09-26T00:00:00.000Z","score":0.0022,"percentile":null},{"date":"2026-09-27T00:00:00.000Z","score":0.0022,"percentile":null},{"date":"2026-09-28T00:00:00.000Z","score":0.0022,"percentile":null},{"date":"2026-09-29T00:00:00.000Z","score":0.0022,"percentile":null},{"date":"2026-09-30T00:00:00.000Z","score":0.0022,"percentile":null},{"date":"2026-10-01T00:00:00.000Z","score":0.0022,"percentile":null},{"date":"2026-10-02T00:00:00.000Z","score":0.0022,"percentile":null},{"date":"2026-10-03T00:00:00.000Z","score":0.0022,"percentile":null},{"date":"2026-10-04T00:00:00.000Z","score":0.0022,"percentile":null},{"date":"2026-10-05T00:00:00.000Z","score":0.0022,"percentile":null},{"date":"2026-10-06T00:00:00.000Z","score":0.0022,"percentile":null},{"date":"2026-10-07T00:00:00.000Z","score":0.0022,"percentile":null},{"date":"2026-10-08T00:00:00.000Z","score":0.0022,"percentile":null},{"date":"2026-10-09T00:00:00.000Z","score":0.0022,"percentile":null},{"date":"2026-10-10T00:00:00.000Z","score":0.0022,"percentile":null},{"date":"2026-10-11T00:00:00.000Z","score":0.0022,"percentile":null},{"date":"2026-10-12T00:00:00.000Z","score":0.0022,"percentile":null},{"date":"2026-10-13T00:00:00.000Z","score":0.0022,"percentile":null},{"date":"2026-10-14T00:00:00.000Z","score":0.0022,"percentile":null},{"date":"2026-10-15T00:00:00.000Z","score":0.0022,"percentile":null},{"date":"2026-10-16T00:00:00.000Z","score":0.0022,"percentile":null},{"date":"2026-10-17T00:00:00.000Z","score":0.0022,"percentile":null},{"date":"2026-10-18T00:00:00.000Z","score":0.0022,"percentile":null},{"date":"2026-10-19T00:00:00.000Z","score":0.0022,"percentile":null},{"date":"2026-10-20T00:00:00.000Z","score":0.0022,"percentile":null},{"date":"2026-10-21T00:00:00.000Z","score":0.0022,"percentile":0.11821}],"last30":[{"date":"2026-09-21T00:00:00.000Z","score":0.00205,"percentile":null},{"date":"2026-09-22T00:00:00.000Z","score":0.00205,"percentile":null},{"date":"2026-09-23T00:00:00.000Z","score":0.0022,"percentile":null},{"date":"2026-09-24T00:00:00.000Z","score":0.0022,"percentile":null},{"date":"2026-09-25T00:00:00.000Z","score":0.0022,"percentile":null},{"date":"2026-09-26T00:00:00.000Z","score":0.0022,"percentile":null},{"date":"2026-09-27T00:00:00.000Z","score":0.0022,"percentile":null},{"date":"2026-09-28T00:00:00.000Z","score":0.0022,"percentile":null},{"date":"2026-09-29T00:00:00.000Z","score":0.0022,"percentile":null},{"date":"2026-09-30T00:00:00.000Z","score":0.0022,"percentile":null},{"date":"2026-10-01T00:00:00.000Z","score":0.0022,"percentile":null},{"date":"2026-10-02T00:00:00.000Z","score":0.0022,"percentile":null},{"date":"2026-10-03T00:00:00.000Z","score":0.0022,"percentile":null},{"date":"2026-10-04T00:00:00.000Z","score":0.0022,"percentile":null},{"date":"2026-10-05T00:00:00.000Z","score":0.0022,"percentile":null},{"date":"2026-10-06T00:00:00.000Z","score":0.0022,"percentile":null},{"date":"2026-10-07T00:00:00.000Z","score":0.0022,"percentile":null},{"date":"2026-10-08T00:00:00.000Z","score":0.0022,"percentile":null},{"date":"2026-10-09T00:00:00.000Z","score":0.0022,"percentile":null},{"date":"2026-10-10T00:00:00.000Z","score":0.0022,"percentile":null},{"date":"2026-10-11T00:00:00.000Z","score":0.0022,"percentile":null},{"date":"2026-10-12T00:00:00.000Z","score":0.0022,"percentile":null},{"date":"2026-10-13T00:00:00.000Z","score":0.0022,"percentile":null},{"date":"2026-10-14T00:00:00.000Z","score":0.0022,"percentile":null},{"date":"2026-10-15T00:00:00.000Z","score":0.0022,"percentile":null},{"date":"2026-10-16T00:00:00.000Z","score":0.0022,"percentile":null},{"date":"2026-10-17T00:00:00.000Z","score":0.0022,"percentile":null},{"date":"2026-10-18T00:00:00.000Z","score":0.0022,"percentile":null},{"date":"2026-10-19T00:00:00.000Z","score":0.0022,"percentile":null},{"date":"2026-10-20T00:00:00.000Z","score":0.0022,"percentile":null},{"date":"2026-10-21T00:00:00.000Z","score":0.0022,"percentile":0.11821}]},"kev":{"state":"not-listed","entries":[],"listedCount":0,"totalCatalogs":3,"catalogs":[{"source":"cisa","label":"CISA","listed":false,"entry":null},{"source":"enisa","label":"ENISA","listed":false,"entry":null},{"source":"circl","label":"CIRCL","listed":false,"entry":null}]},"ransomware":{"state":"none-recorded","sources":[]},"exploits":[],"exploitCount":0,"weaknesses":[{"id":"CWE-420","name":"Unprotected Alternate Channel","description":"The product protects a primary channel, but it does not use the same level of protection for an alternate channel.","type":"weakness","status":"Draft","abstraction":"Base","likelihoodOfExploit":null,"url":"https://cwe.mitre.org/data/definitions/420.html"}],"affected":[{"vendor":"chainguard","product":"caddy","name":"caddy","label":"caddy","ecosystem":"Chainguard","cpePart":null,"purl":"pkg:apk/chainguard/caddy","purlType":"apk","versions":[{"text":"< 2.10.2-r3","noFixRecorded":false,"fixedIn":null}],"versionsText":"< 2.10.2-r3","eol":null,"hubHref":null},{"vendor":"chainguard","product":"caddy-fips","name":"caddy-fips","label":"caddy-fips","ecosystem":"Chainguard","cpePart":null,"purl":"pkg:apk/chainguard/caddy-fips","purlType":"apk","versions":[{"text":"< 2.10.2-r2","noFixRecorded":false,"fixedIn":null}],"versionsText":"< 2.10.2-r2","eol":null,"hubHref":null},{"vendor":"chainguard","product":"caddy-man","name":"caddy-man","label":"caddy-man","ecosystem":"Chainguard","cpePart":null,"purl":"pkg:apk/chainguard/caddy-man","purlType":"apk","versions":[{"text":"< 2.10.2-r3","noFixRecorded":false,"fixedIn":null}],"versionsText":"< 2.10.2-r3","eol":null,"hubHref":null},{"vendor":"chainguard","product":"caddy-src","name":"caddy-src","label":"caddy-src","ecosystem":"Chainguard","cpePart":null,"purl":"pkg:apk/chainguard/caddy-src","purlType":"apk","versions":[{"text":"< 2.10.2-r3","noFixRecorded":false,"fixedIn":null}],"versionsText":"< 2.10.2-r3","eol":null,"hubHref":null},{"vendor":"chainguard","product":"step","name":"step","label":"step","ecosystem":"Chainguard","cpePart":null,"purl":"pkg:apk/chainguard/step","purlType":"apk","versions":[{"text":"< 0.28.7-r4","noFixRecorded":false,"fixedIn":null}],"versionsText":"< 0.28.7-r4","eol":null,"hubHref":null},{"vendor":"chainguard","product":"step-ca","name":"step-ca","label":"step-ca","ecosystem":"Chainguard","cpePart":null,"purl":"pkg:apk/chainguard/step-ca","purlType":"apk","versions":[{"text":"< 0.28.4-r3","noFixRecorded":false,"fixedIn":null}],"versionsText":"< 0.28.4-r3","eol":null,"hubHref":null},{"vendor":"chainguard","product":"step-ca-fips","name":"step-ca-fips","label":"step-ca-fips","ecosystem":"Chainguard","cpePart":null,"purl":"pkg:apk/chainguard/step-ca-fips","purlType":"apk","versions":[{"text":"< 0.28.4-r4","noFixRecorded":false,"fixedIn":null}],"versionsText":"< 0.28.4-r4","eol":null,"hubHref":null},{"vendor":"chainguard","product":"step-fips","name":"step-fips","label":"step-fips","ecosystem":"Chainguard","cpePart":null,"purl":"pkg:apk/chainguard/step-fips","purlType":"apk","versions":[{"text":"< 0.28.7-r4","noFixRecorded":false,"fixedIn":null}],"versionsText":"< 0.28.7-r4","eol":null,"hubHref":null},{"vendor":"chainguard","product":"step-issuer","name":"step-issuer","label":"step-issuer","ecosystem":"Chainguard","cpePart":null,"purl":"pkg:apk/chainguard/step-issuer","purlType":"apk","versions":[{"text":"< 0.9.9-r3","noFixRecorded":false,"fixedIn":null}],"versionsText":"< 0.9.9-r3","eol":null,"hubHref":null},{"vendor":"chainguard","product":"step-issuer-compat","name":"step-issuer-compat","label":"step-issuer-compat","ecosystem":"Chainguard","cpePart":null,"purl":"pkg:apk/chainguard/step-issuer-compat","purlType":"apk","versions":[{"text":"< 0.9.9-r3","noFixRecorded":false,"fixedIn":null}],"versionsText":"< 0.9.9-r3","eol":null,"hubHref":null},{"vendor":"chainguard","product":"step-issuer-fips","name":"step-issuer-fips","label":"step-issuer-fips","ecosystem":"Chainguard","cpePart":null,"purl":"pkg:apk/chainguard/step-issuer-fips","purlType":"apk","versions":[{"text":"< 0.9.9-r3","noFixRecorded":false,"fixedIn":null}],"versionsText":"< 0.9.9-r3","eol":null,"hubHref":null},{"vendor":"chainguard","product":"step-issuer-fips-compat","name":"step-issuer-fips-compat","label":"step-issuer-fips-compat","ecosystem":"Chainguard","cpePart":null,"purl":"pkg:apk/chainguard/step-issuer-fips-compat","purlType":"apk","versions":[{"text":"< 0.9.9-r3","noFixRecorded":false,"fixedIn":null}],"versionsText":"< 0.9.9-r3","eol":null,"hubHref":null},{"vendor":"wolfi","product":"caddy","name":"caddy","label":"caddy","ecosystem":"Wolfi","cpePart":null,"purl":"pkg:apk/wolfi/caddy","purlType":"apk","versions":[{"text":"< 2.10.2-r3","noFixRecorded":false,"fixedIn":null}],"versionsText":"< 2.10.2-r3","eol":null,"hubHref":null},{"vendor":"wolfi","product":"caddy-man","name":"caddy-man","label":"caddy-man","ecosystem":"Wolfi","cpePart":null,"purl":"pkg:apk/wolfi/caddy-man","purlType":"apk","versions":[{"text":"< 2.10.2-r3","noFixRecorded":false,"fixedIn":null}],"versionsText":"< 2.10.2-r3","eol":null,"hubHref":null},{"vendor":"wolfi","product":"caddy-src","name":"caddy-src","label":"caddy-src","ecosystem":"Wolfi","cpePart":null,"purl":"pkg:apk/wolfi/caddy-src","purlType":"apk","versions":[{"text":"< 2.10.2-r3","noFixRecorded":false,"fixedIn":null}],"versionsText":"< 2.10.2-r3","eol":null,"hubHref":null},{"vendor":"wolfi","product":"step","name":"step","label":"step","ecosystem":"Wolfi","cpePart":null,"purl":"pkg:apk/wolfi/step","purlType":"apk","versions":[{"text":"< 0.28.7-r4","noFixRecorded":false,"fixedIn":null}],"versionsText":"< 0.28.7-r4","eol":null,"hubHref":null},{"vendor":"wolfi","product":"step-ca","name":"step-ca","label":"step-ca","ecosystem":"Wolfi","cpePart":null,"purl":"pkg:apk/wolfi/step-ca","purlType":"apk","versions":[{"text":"< 0.28.4-r3","noFixRecorded":false,"fixedIn":null}],"versionsText":"< 0.28.4-r3","eol":null,"hubHref":null},{"vendor":"wolfi","product":"step-issuer","name":"step-issuer","label":"step-issuer","ecosystem":"Wolfi","cpePart":null,"purl":"pkg:apk/wolfi/step-issuer","purlType":"apk","versions":[{"text":"< 0.9.9-r3","noFixRecorded":false,"fixedIn":null}],"versionsText":"< 0.9.9-r3","eol":null,"hubHref":null},{"vendor":"wolfi","product":"step-issuer-compat","name":"step-issuer-compat","label":"step-issuer-compat","ecosystem":"Wolfi","cpePart":null,"purl":"pkg:apk/wolfi/step-issuer-compat","purlType":"apk","versions":[{"text":"< 0.9.9-r3","noFixRecorded":false,"fixedIn":null}],"versionsText":"< 0.9.9-r3","eol":null,"hubHref":null},{"vendor":"github.com/slackhq","product":"nebula","name":"github.com/slackhq/nebula","label":"nebula","ecosystem":"Go","cpePart":null,"purl":"pkg:golang/github.com/slackhq/nebula","purlType":"golang","versions":[{"text":"≥ 1.9.4, < 1.9.7","noFixRecorded":false,"fixedIn":null}],"versionsText":"≥ 1.9.4, < 1.9.7","eol":null,"hubHref":null},{"vendor":"slack","product":"nebula","name":"nebula","label":"nebula","ecosystem":null,"cpePart":"a","purl":null,"purlType":null,"versions":[{"text":"< 1.9.7","noFixRecorded":false,"fixedIn":null}],"versionsText":"< 1.9.7","eol":null,"hubHref":"/vendor/slack/nebula"}],"affectedCount":21,"eol":{"hasEol":false,"count":0},"references":[{"url":"https://github.com/slackhq/nebula/pull/1493","label":"github.com/slackhq/nebula/pull/1493","hostname":"github.com","tags":["FIX","WEB"]},{"url":"https://github.com/slackhq/nebula/pull/1494","label":"github.com/slackhq/nebula/pull/1494","hostname":"github.com","tags":["FIX","WEB"]},{"url":"https://github.com/CVEProject/cvelistV5/tree/main/cves/2025/62xxx/CVE-2025-62820.json","label":"github.com/CVEProject/cvelistV5/tree/main/cves/2025/62xxx/CVE-2025-62820.json","hostname":"github.com","tags":["Advisory"]},{"url":"https://nvd.nist.gov/vuln/detail/CVE-2025-62820","label":"nvd.nist.gov/vuln/detail/CVE-2025-62820","hostname":"nvd.nist.gov","tags":["Advisory"]},{"url":"https://github.com/slackhq/nebula/commit/e264a0ff888c7bf0568579306755a60fc42f6ecc","label":"github.com/slackhq/nebula/commit/e264a0ff888c7bf0568579306755a60fc42f6ecc","hostname":"github.com","tags":["WEB","FIX"]},{"url":"https://github.com/slackhq/nebula","label":"github.com/slackhq/nebula","hostname":"github.com","tags":["PACKAGE"]},{"url":"https://github.com/advisories/GHSA-x6fh-7qmf-69xh","label":"github.com/advisories/GHSA-x6fh-7qmf-69xh","hostname":"github.com","tags":["Advisory"]}],"lineage":{"upstream":[],"downstream":["OPENSUSE-SU-2025:15710-1","OPENSUSE-SU-2026:21483-1"],"duplicates":[],"related":["CGA-2J5X-VCJC-9F8R","CGA-7JFG-F835-CX64","CGA-QP6J-7CGC-X4RH","CGA-QX58-VRFX-2M5P","OPENSUSE-SU-2025:15710-1","OPENSUSE-SU-2026:21483-1"]},"timeline":[{"kind":"published","date":"2025-10-23T00:00:00.000Z","label":"Published","detail":"Vulnerability first disclosed.","source":null},{"kind":"modified","date":"2025-10-23T14:35:19.815Z","label":"Last modified","detail":"Vulnerability information updated.","source":null}],"risk":{"score":20,"level":"low","profile":"Default","thresholds":{"critical":75,"high":50,"medium":25,"low":10}},"meta":{"dataAsOf":"2026-10-22T04:13:11.929Z","stale":false,"partial":false}}