{"schemaVersion":3,"id":"CVE-2026-25793","aliases":["CGA-7259-hmxh-6jgx","CGA-7wr3-2jh2-8mr3","CGA-9g4p-vmh9-2x8w","CGA-cm73-4q69-ccpq","CGA-mmq3-994v-95x5","CGA-r42v-3jvp-5wr2","CGA-r885-7m2m-37cw","CGA-w5j6-cqff-m6c6","GHSA-69x3-g4r3-p962","GO-2026-4458","CGA-3jq4-558m-w583","CGA-4q3g-qj7m-rf3g","CGA-5p6g-424w-787j","CGA-77wr-c88m-4gg3","CGA-cccm-q4q5-8w4f","CGA-pmjv-gcxg-5j67","CGA-qv68-gq4w-558c","CGA-xr47-6fq3-358w"],"status":"published","duplicateOf":null,"title":null,"description":"Nebula is a scalable overlay networking tool. In versions from 1.7.0 to 1.10.2, when using P256 certificates (which is not the default configuration), it is possible to evade a blocklist entry created against the fingerprint of a certificate by using ECDSA Signature Malleability to use a copy of the certificate with a different fingerprint. This issue has been patched in version 1.10.3.","dates":{"published":"2026-02-06T22:55:36.011Z","modified":"2026-02-09T15:25:50.582Z","reserved":null,"kevAdded":[],"kevDue":[]},"cvss":{"headline":{"score":8.1,"severity":"high","version":"3.1","versionLabel":"v3.1","source":"NVD","vector":"CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:N","computed":false,"selection":"backend-summary"},"metrics":[{"version":"4.0","versionLabel":"v4.0","source":"CVE.org","score":7.6,"severity":"high","vector":"CVSS:4.0/AV:N/AC:L/AT:P/PR:L/UI:N/VC:H/VI:H/VA:N/SC:N/SI:N/SA:N","exploitability":null,"impact":null,"computed":false},{"version":"4.0","versionLabel":"v4.0","source":"OSV · Wolfi","score":7.6,"severity":"high","vector":"CVSS:4.0/AV:N/AC:L/AT:P/PR:L/UI:N/VC:H/VI:H/VA:N/SC:N/SI:N/SA:N","exploitability":null,"impact":null,"computed":true},{"version":"4.0","versionLabel":"v4.0","source":"OSV · Go","score":7.6,"severity":"high","vector":"CVSS:4.0/AV:N/AC:L/AT:P/PR:L/UI:N/VC:H/VI:H/VA:N/SC:N/SI:N/SA:N","exploitability":null,"impact":null,"computed":true},{"version":"4.0","versionLabel":"v4.0","source":"OSV · Chainguard","score":7.6,"severity":"high","vector":"CVSS:4.0/AV:N/AC:L/AT:P/PR:L/UI:N/VC:H/VI:H/VA:N/SC:N/SI:N/SA:N","exploitability":null,"impact":null,"computed":true},{"version":"4.0","versionLabel":"v4.0","source":"NVD","score":7.6,"severity":"high","vector":"CVSS:4.0/AV:N/AC:L/AT:P/PR:L/UI:N/VC:H/VI:H/VA:N/SC:N/SI:N/SA:N/E:X/CR:X/IR:X/AR:X/MAV:X/MAC:X/MAT:X/MPR:X/MUI:X/MVC:X/MVI:X/MVA:X/MSC:X/MSI:X/MSA:X/S:X/AU:X/R:X/V:X/RE:X/U:X","exploitability":null,"impact":null,"computed":false},{"version":"3.1","versionLabel":"v3.1","source":"NVD","score":8.1,"severity":"high","vector":"CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:N","exploitability":null,"impact":null,"computed":false}]},"epss":{"probability":0.00183,"percentile":0.07496,"severity":"low","asOf":"2026-10-21T00:00:00.000Z","change":{"pp":0.04500000000000001,"baselineDate":"2026-09-21T00:00:00.000Z","baselineScore":0.00138},"history":[{"date":"2026-09-14T00:00:00.000Z","score":0.00138,"percentile":null},{"date":"2026-09-15T00:00:00.000Z","score":0.00138,"percentile":null},{"date":"2026-09-16T00:00:00.000Z","score":0.00138,"percentile":null},{"date":"2026-09-17T00:00:00.000Z","score":0.00138,"percentile":null},{"date":"2026-09-18T00:00:00.000Z","score":0.00138,"percentile":null},{"date":"2026-09-19T00:00:00.000Z","score":0.00138,"percentile":null},{"date":"2026-09-20T00:00:00.000Z","score":0.00138,"percentile":null},{"date":"2026-09-21T00:00:00.000Z","score":0.00138,"percentile":null},{"date":"2026-09-22T00:00:00.000Z","score":0.00138,"percentile":null},{"date":"2026-09-23T00:00:00.000Z","score":0.00138,"percentile":null},{"date":"2026-09-24T00:00:00.000Z","score":0.00171,"percentile":null},{"date":"2026-09-25T00:00:00.000Z","score":0.00171,"percentile":null},{"date":"2026-09-26T00:00:00.000Z","score":0.00171,"percentile":null},{"date":"2026-09-27T00:00:00.000Z","score":0.00171,"percentile":null},{"date":"2026-09-28T00:00:00.000Z","score":0.00171,"percentile":null},{"date":"2026-09-29T00:00:00.000Z","score":0.00171,"percentile":null},{"date":"2026-09-30T00:00:00.000Z","score":0.00171,"percentile":null},{"date":"2026-10-01T00:00:00.000Z","score":0.00171,"percentile":null},{"date":"2026-10-02T00:00:00.000Z","score":0.00171,"percentile":null},{"date":"2026-10-03T00:00:00.000Z","score":0.00171,"percentile":null},{"date":"2026-10-04T00:00:00.000Z","score":0.00183,"percentile":null},{"date":"2026-10-05T00:00:00.000Z","score":0.00183,"percentile":null},{"date":"2026-10-06T00:00:00.000Z","score":0.00183,"percentile":null},{"date":"2026-10-07T00:00:00.000Z","score":0.00183,"percentile":null},{"date":"2026-10-08T00:00:00.000Z","score":0.00183,"percentile":null},{"date":"2026-10-09T00:00:00.000Z","score":0.00183,"percentile":null},{"date":"2026-10-10T00:00:00.000Z","score":0.00183,"percentile":null},{"date":"2026-10-11T00:00:00.000Z","score":0.00183,"percentile":null},{"date":"2026-10-12T00:00:00.000Z","score":0.00183,"percentile":null},{"date":"2026-10-13T00:00:00.000Z","score":0.00183,"percentile":null},{"date":"2026-10-14T00:00:00.000Z","score":0.00183,"percentile":null},{"date":"2026-10-15T00:00:00.000Z","score":0.00183,"percentile":null},{"date":"2026-10-16T00:00:00.000Z","score":0.00183,"percentile":null},{"date":"2026-10-17T00:00:00.000Z","score":0.00183,"percentile":null},{"date":"2026-10-18T00:00:00.000Z","score":0.00183,"percentile":null},{"date":"2026-10-19T00:00:00.000Z","score":0.00183,"percentile":null},{"date":"2026-10-20T00:00:00.000Z","score":0.00183,"percentile":null},{"date":"2026-10-21T00:00:00.000Z","score":0.00183,"percentile":0.07496}],"last30":[{"date":"2026-09-21T00:00:00.000Z","score":0.00138,"percentile":null},{"date":"2026-09-22T00:00:00.000Z","score":0.00138,"percentile":null},{"date":"2026-09-23T00:00:00.000Z","score":0.00138,"percentile":null},{"date":"2026-09-24T00:00:00.000Z","score":0.00171,"percentile":null},{"date":"2026-09-25T00:00:00.000Z","score":0.00171,"percentile":null},{"date":"2026-09-26T00:00:00.000Z","score":0.00171,"percentile":null},{"date":"2026-09-27T00:00:00.000Z","score":0.00171,"percentile":null},{"date":"2026-09-28T00:00:00.000Z","score":0.00171,"percentile":null},{"date":"2026-09-29T00:00:00.000Z","score":0.00171,"percentile":null},{"date":"2026-09-30T00:00:00.000Z","score":0.00171,"percentile":null},{"date":"2026-10-01T00:00:00.000Z","score":0.00171,"percentile":null},{"date":"2026-10-02T00:00:00.000Z","score":0.00171,"percentile":null},{"date":"2026-10-03T00:00:00.000Z","score":0.00171,"percentile":null},{"date":"2026-10-04T00:00:00.000Z","score":0.00183,"percentile":null},{"date":"2026-10-05T00:00:00.000Z","score":0.00183,"percentile":null},{"date":"2026-10-06T00:00:00.000Z","score":0.00183,"percentile":null},{"date":"2026-10-07T00:00:00.000Z","score":0.00183,"percentile":null},{"date":"2026-10-08T00:00:00.000Z","score":0.00183,"percentile":null},{"date":"2026-10-09T00:00:00.000Z","score":0.00183,"percentile":null},{"date":"2026-10-10T00:00:00.000Z","score":0.00183,"percentile":null},{"date":"2026-10-11T00:00:00.000Z","score":0.00183,"percentile":null},{"date":"2026-10-12T00:00:00.000Z","score":0.00183,"percentile":null},{"date":"2026-10-13T00:00:00.000Z","score":0.00183,"percentile":null},{"date":"2026-10-14T00:00:00.000Z","score":0.00183,"percentile":null},{"date":"2026-10-15T00:00:00.000Z","score":0.00183,"percentile":null},{"date":"2026-10-16T00:00:00.000Z","score":0.00183,"percentile":null},{"date":"2026-10-17T00:00:00.000Z","score":0.00183,"percentile":null},{"date":"2026-10-18T00:00:00.000Z","score":0.00183,"percentile":null},{"date":"2026-10-19T00:00:00.000Z","score":0.00183,"percentile":null},{"date":"2026-10-20T00:00:00.000Z","score":0.00183,"percentile":null},{"date":"2026-10-21T00:00:00.000Z","score":0.00183,"percentile":0.07496}]},"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-347","name":"Improper Verification of Cryptographic Signature","description":"The product does not verify, or incorrectly verifies, the cryptographic signature for data.","type":"weakness","status":"Draft","abstraction":"Base","likelihoodOfExploit":null,"url":"https://cwe.mitre.org/data/definitions/347.html"}],"affected":[{"vendor":"chainguard","product":"caddy","name":"caddy","label":"caddy","ecosystem":"Chainguard","cpePart":null,"purl":"pkg:apk/chainguard/caddy","purlType":"apk","versions":[{"text":"< 2.11.0-r0","noFixRecorded":false,"fixedIn":null}],"versionsText":"< 2.11.0-r0","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":"< 2.11.1-r0","noFixRecorded":false,"fixedIn":null}],"versionsText":"< 2.11.1-r0","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":"< 0.30.1-r0","noFixRecorded":false,"fixedIn":null}],"versionsText":"< 0.30.1-r0","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":"< 0.30.1-r0","noFixRecorded":false,"fixedIn":null}],"versionsText":"< 0.30.1-r0","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":"< 0.30.2-r0","noFixRecorded":false,"fixedIn":null}],"versionsText":"< 0.30.2-r0","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":"< 0.30.1-r0","noFixRecorded":false,"fixedIn":null}],"versionsText":"< 0.30.1-r0","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":"< 0.10.1-r0","noFixRecorded":false,"fixedIn":null}],"versionsText":"< 0.10.1-r0","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":"< 0.9.11-r5","noFixRecorded":false,"fixedIn":null}],"versionsText":"< 0.9.11-r5","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":"< 2.11.0-r0","noFixRecorded":false,"fixedIn":null}],"versionsText":"< 2.11.0-r0","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":"< 0.30.1-r0","noFixRecorded":false,"fixedIn":null}],"versionsText":"< 0.30.1-r0","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":"< 0.30.1-r0","noFixRecorded":false,"fixedIn":null}],"versionsText":"< 0.30.1-r0","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":"< 0.10.1-r0","noFixRecorded":false,"fixedIn":null}],"versionsText":"< 0.10.1-r0","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":"≥ 1.7.0, < 1.10.3","noFixRecorded":false,"fixedIn":null}],"versionsText":"≥ 1.7.0, < 1.10.3","eol":null,"hubHref":null},{"vendor":"slack","product":"nebula","name":"nebula","label":"nebula","ecosystem":null,"cpePart":"a","purl":null,"purlType":null,"versions":[{"text":"≥ 1.7.0, < 1.10.3","noFixRecorded":false,"fixedIn":null}],"versionsText":"≥ 1.7.0, < 1.10.3","eol":null,"hubHref":"/vendor/slack/nebula"},{"vendor":"slackhq","product":"nebula","name":"nebula","label":"nebula","ecosystem":null,"cpePart":"a","purl":null,"purlType":null,"versions":[{"text":"≥ 1.7.0, < 1.10.3","noFixRecorded":false,"fixedIn":null}],"versionsText":"≥ 1.7.0, < 1.10.3","eol":null,"hubHref":"/vendor/slackhq/nebula"}],"affectedCount":15,"eol":{"hasEol":false,"count":0},"references":[{"url":"https://github.com/slackhq/nebula/security/advisories/GHSA-69x3-g4r3-p962","label":"github.com/slackhq/nebula/security/advisories/GHSA-69x3-g4r3-p962","hostname":"github.com","tags":["X Refsource CONFIRM","Advisory","WEB","Vendor Advisory"]},{"url":"https://github.com/slackhq/nebula/commit/f573e8a26695278f9d71587390fbfe0d0933aa21","label":"github.com/slackhq/nebula/commit/f573e8a26695278f9d71587390fbfe0d0933aa21","hostname":"github.com","tags":["X Refsource MISC","FIX","WEB","Patch"]},{"url":"https://github.com/CVEProject/cvelistV5/tree/main/cves/2026/25xxx/CVE-2026-25793.json","label":"github.com/CVEProject/cvelistV5/tree/main/cves/2026/25xxx/CVE-2026-25793.json","hostname":"github.com","tags":["Advisory"]},{"url":"https://nvd.nist.gov/vuln/detail/CVE-2026-25793","label":"nvd.nist.gov/vuln/detail/CVE-2026-25793","hostname":"nvd.nist.gov","tags":["Advisory"]},{"url":"https://github.com/slackhq/nebula","label":"github.com/slackhq/nebula","hostname":"github.com","tags":["PACKAGE"]}],"lineage":{"upstream":[],"downstream":["OPENSUSE-SU-2026:21483-1","SUSE-SU-2026:0757-1"],"duplicates":[],"related":["CGA-FRWM-CMV5-PF55","OPENSUSE-SU-2026:21483-1","SUSE-SU-2026:0757-1"]},"timeline":[{"kind":"published","date":"2026-02-06T22:55:36.011Z","label":"Published","detail":"Vulnerability first disclosed.","source":null},{"kind":"modified","date":"2026-02-09T15:25:50.582Z","label":"Last modified","detail":"Vulnerability information updated.","source":null}],"risk":{"score":32,"level":"medium","profile":"Default","thresholds":{"critical":75,"high":50,"medium":25,"low":10}},"meta":{"dataAsOf":"2026-10-22T08:16:15.057Z","stale":false,"partial":false}}