{"id":"CVE-2026-116166","aliases":[],"cve":{"records":[{"id":"CVE-2026-116166","source":"VulnCheck","state":"PUBLISHED","reasons":[],"replacements":[],"disputed":false,"unsupportedWhenAssigned":false,"reserved":"2026-10-25T12:24:12.573Z","published":"2026-10-25T13:20:09.700Z","modified":"2026-10-29T16:12:42.398Z"}],"publishers":[{"name":"VulnCheck","role":"CNA","organizationId":"83251b91-4cc7-4094-a5c7-464a1b83ea10","modified":"2026-10-25T13:20:09.700Z"},{"name":"CISA-ADP","role":"ADP","organizationId":"134c704f-9b21-4f2e-91b3-4a467353bcc0","modified":"2026-10-29T16:12:42.398Z"}],"references":[{"url":"https://github.com/siyuan-note/siyuan/security/advisories/GHSA-hpj5-f7cj-vvwr","tags":["vendor-advisory"],"source":"VulnCheck"},{"url":"https://www.vulncheck.com/advisories/siyuan-3.6.0-before-3.8.7-cleartext-transmission-via-unenforced-networkservetls-setting","tags":["third-party-advisory"],"source":"VulnCheck"},{"url":"https://github.com/siyuan-note/siyuan/security/advisories/GHSA-hpj5-f7cj-vvwr","tags":["exploit"],"source":"CISA-ADP"}],"weaknesses":[{"id":"CWE-319","description":"Cleartext Transmission of Sensitive Information","source":"VulnCheck"}],"applicability":[{"source":"VulnCheck","statements":[{"nodes":[{"operator":"OR","negate":false,"cpeMatch":[{"vulnerable":true,"criteria":"cpe:2.3:a:b3log:siyuan:*:*:*:*:*:*:*:*","versionStartIncluding":"3.6.0","versionEndExcluding":"3.8.7"}]}]}]}],"prioritization":[{"source":"CISA-ADP","type":"SSVC","role":"CISA Coordinator","timestamp":"2026-10-29T16:12:08.372713Z","decisions":[{"name":"Exploitation","value":"poc"},{"name":"Automatable","value":"no"},{"name":"Technical Impact","value":"total"}]}]},"title":"SiYuan 3.6.0 before 3.8.7 Cleartext Transmission via Unenforced networkServeTLS Setting","titleSource":"VulnCheck","descriptionSource":"VulnCheck","description":"SiYuan 3.6.0 before 3.8.7 accepts and persists the networkServeTLS setting but never enforces it, so the kernel port keeps serving full API access over plain HTTP alongside HTTPS. Network-adjacent attackers can sniff the cleartext login flow and session cookie, which lacks the Secure attribute while responses omit HSTS, to hijack kernel API sessions.","score":7.6,"severity":"high","published":"2026-10-25T13:20:09.700Z","modified":"2026-10-29T16:12:42.398Z","withdrawn":false,"knownExploited":false,"affected":[],"products":[{"vendor":"siyuan-note","name":"siyuan","platforms":[],"versions":[{"version":"3.6.0","status":"affected","lessThan":"3.8.7","versionType":"semver"},{"version":"3.8.7","status":"unaffected","versionType":"semver"}],"defaultStatus":"unaffected","cpes":[],"source":"VulnCheck","url":"https://www.cve.org/CVERecord?id=CVE-2026-116166"}],"remediation":[],"references":["https://github.com/siyuan-note/siyuan/security/advisories/GHSA-hpj5-f7cj-vvwr","https://www.vulncheck.com/advisories/siyuan-3.6.0-before-3.8.7-cleartext-transmission-via-unenforced-networkservetls-setting"],"sources":[{"name":"CVE","id":"CVE-2026-116166","modified":"2026-10-29T16:12:42.398Z","url":"https://www.cve.org/CVERecord?id=CVE-2026-116166"}],"assessments":[{"source":"VulnCheck","vector":"CVSS:4.0/AV:A/AC:H/AT:P/PR:N/UI:N/VC:H/VI:H/VA:N/SC:N/SI:N/SA:N","score":7.6},{"source":"VulnCheck","vector":"CVSS:3.1/AV:A/AC:H/PR:N/UI:N/S:U/C:H/I:H/A:N","score":6.8}],"sourceAffected":[],"observedAt":"2026-10-29T17:05:16.199Z","kev":{"status":"not-listed","checkedAt":"2026-11-05T15:00:33.530Z"},"coverage":[{"source":"NVD","status":"available","checkedAt":"2026-10-30T11:30:40.545Z","attemptedAt":"2026-10-30T11:30:40.545Z"},{"source":"GHSA","status":"available","checkedAt":"2026-10-30T11:30:40.998Z","attemptedAt":"2026-10-30T11:30:40.998Z"},{"source":"EUVD","status":"refresh-failed","attemptedAt":"2026-10-30T11:30:36.345Z"},{"source":"EPSS","status":"available","checkedAt":"2026-10-30T11:30:39.069Z","attemptedAt":"2026-10-30T11:30:39.069Z"}],"evidence":[{"source":"FIRST EPSS","id":"CVE-2026-116166","url":"https://www.first.org/epss/","probability":0.00115,"percentile":0.01562,"date":"2026-10-29","checkedAt":"2026-10-30T11:30:39.069Z"},{"source":"NVD","id":"CVE-2026-116166","url":"https://nvd.nist.gov/vuln/detail/CVE-2026-116166","modified":"2026-10-29T17:18:03.717","score":7.6,"vector":"CVSS:4.0/AV:A/AC:H/AT:P/PR:N/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","checkedAt":"2026-10-30T11:30:40.545Z"},{"source":"NVD","id":"CVE-2026-116166","url":"https://nvd.nist.gov/vuln/detail/CVE-2026-116166","modified":"2026-10-29T17:18:03.717","score":6.8,"vector":"CVSS:3.1/AV:A/AC:H/PR:N/UI:N/S:U/C:H/I:H/A:N","checkedAt":"2026-10-30T11:30:40.545Z"},{"source":"GitHub Advisory Database","id":"GHSA-89mj-v839-4h76","url":"https://github.com/advisories/GHSA-89mj-v839-4h76","modified":"2026-10-25T15:32:23Z","score":6.8,"vector":"CVSS:3.1/AV:A/AC:H/PR:N/UI:N/S:U/C:H/I:H/A:N","checkedAt":"2026-10-30T11:30:40.998Z"}],"aiSummary":{"text":"SiYuan versions 3.6.0 before 3.8.7 have a cleartext transmission vulnerability due to an unenforced networkServeTLS setting, allowing network-adjacent attackers to sniff login flows and session cookies. The kernel port serves full API access over plain HTTP alongside HTTPS. This affects SiYuan 3.6.0 before 3.8.7.","model":"@cf/meta/llama-3.3-70b-instruct-fp8-fast","generatedAt":"2026-10-30T09:59:57.316Z","sources":[{"name":"CVE","url":"https://www.cve.org/CVERecord?id=CVE-2026-116166"}]}}