{"schemaVersion":3,"id":"CVE-2026-97629","aliases":["DEBIAN-CVE-2026-97629","UBUNTU-CVE-2026-97629"],"status":"published","duplicateOf":null,"title":null,"description":"Description\nWhen NGINX Plus or NGINX Open Source is configured with ssl_session_cache\n\nshared:name:size\n\nwithout an explicit ssl_session_ticket_key file directives to automatically rotate SSL session ticket keys, a remote unauthenticated attacker is able to forge client SSL sessions\n\nin a non-deterministic manner that is beyond the attacker's control. An attacker could leverage this vulnerability to bypass verification of client certificates.\n\nImpact\n\n\nThis vulnerability can lead to the exposure of resources or functionality to unintended actors, possibly providing attackers with access to sensitive information. There is no control plane exposure; this is a data plane issue only.\n\n\n\n\n\n\nNote: Software versions which have reached End of Technical Support (EoTS) are not evaluated.","dates":{"published":"2026-10-14T14:40:26.740Z","modified":"2026-10-15T16:43:47.036Z","reserved":null,"kevAdded":[],"kevDue":[]},"cvss":{"headline":{"score":8.3,"severity":"high","version":"4.0","versionLabel":"v4.0","source":"CVE.org","vector":"CVSS:4.0/AV:N/AC:L/AT:P/PR:N/UI:N/VC:H/VI:L/VA:N/SC:N/SI:N/SA:N","computed":false,"selection":"backend-summary"},"metrics":[{"version":"4.0","versionLabel":"v4.0","source":"CVE.org","score":8.3,"severity":"high","vector":"CVSS:4.0/AV:N/AC:L/AT:P/PR:N/UI:N/VC:H/VI:L/VA:N/SC:N/SI:N/SA:N","exploitability":null,"impact":null,"computed":false},{"version":"3.1","versionLabel":"v3.1","source":"CVE.org","score":6.5,"severity":"medium","vector":"CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:H/I:L/A:N","exploitability":null,"impact":null,"computed":false},{"version":"4.0","versionLabel":"v4.0","source":"NVD","score":8.3,"severity":"high","vector":"CVSS:4.0/AV:N/AC:L/AT:P/PR:N/UI:N/VC:H/VI:L/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":6.5,"severity":"medium","vector":"CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:H/I:L/A:N","exploitability":null,"impact":null,"computed":false},{"version":"4.0","versionLabel":"v4.0","source":"OSV · Debian","score":8.3,"severity":"high","vector":"CVSS:4.0/AV:N/AC:L/AT:P/PR:N/UI:N/VC:H/VI:L/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":true},{"version":"4.0","versionLabel":"v4.0","source":"OSV · Ubuntu","score":8.3,"severity":"high","vector":"CVSS:4.0/AV:N/AC:L/AT:P/PR:N/UI:N/VC:H/VI:L/VA:N/SC:N/SI:N/SA:N","exploitability":null,"impact":null,"computed":true},{"version":"3.1","versionLabel":"v3.1","source":"OSV · Ubuntu","score":6.5,"severity":"medium","vector":"CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:H/I:L/A:N","exploitability":5.6,"impact":7,"computed":true}]},"epss":{"probability":0.00175,"percentile":0.06522,"severity":"low","asOf":"2026-10-18T00:00:00.000Z","change":{"pp":null,"baselineDate":null,"baselineScore":null},"history":[{"date":"2026-10-15T00:00:00.000Z","score":0.00175,"percentile":null},{"date":"2026-10-16T00:00:00.000Z","score":0.00175,"percentile":null},{"date":"2026-10-17T00:00:00.000Z","score":0.00175,"percentile":null},{"date":"2026-10-18T00:00:00.000Z","score":0.00175,"percentile":0.06522}],"last30":[{"date":"2026-10-15T00:00:00.000Z","score":0.00175,"percentile":null},{"date":"2026-10-16T00:00:00.000Z","score":0.00175,"percentile":null},{"date":"2026-10-17T00:00:00.000Z","score":0.00175,"percentile":null},{"date":"2026-10-18T00:00:00.000Z","score":0.00175,"percentile":0.06522}]},"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-908","name":"Use of Uninitialized Resource","description":"The product uses or accesses a resource that has not been initialized.","type":"weakness","status":"Incomplete","abstraction":"Base","likelihoodOfExploit":"Medium","url":"https://cwe.mitre.org/data/definitions/908.html"}],"affected":[{"vendor":"debian","product":"nginx","name":"nginx","label":"nginx","ecosystem":"Debian","cpePart":null,"purl":"pkg:deb/debian/nginx","purlType":"deb","versions":[{"text":"All versions","noFixRecorded":true,"fixedIn":null},{"text":"< 1.30.4-8","noFixRecorded":false,"fixedIn":null}],"versionsText":"All versions (No fix recorded) | < 1.30.4-8","eol":null,"hubHref":null},{"vendor":"ubuntu","product":"nginx","name":"nginx","label":"nginx","ecosystem":"Ubuntu","cpePart":null,"purl":"pkg:deb/ubuntu/nginx","purlType":"deb","versions":[{"text":"All versions","noFixRecorded":true,"fixedIn":null}],"versionsText":"All versions (No fix recorded)","eol":null,"hubHref":null},{"vendor":"f5","product":"nginx open source","name":"NGINX Open Source","label":"nginx open source","ecosystem":null,"cpePart":"a","purl":null,"purlType":null,"versions":[{"text":"≥ 1.31.0, < 1.31.7","noFixRecorded":false,"fixedIn":null},{"text":"≥ 1.30.0, < 1.30.6","noFixRecorded":false,"fixedIn":null},{"text":"≥ 1.23.3","noFixRecorded":true,"fixedIn":null}],"versionsText":"≥ 1.31.0, < 1.31.7 | ≥ 1.30.0, < 1.30.6 | ≥ 1.23.3 (No fix recorded)","eol":null,"hubHref":"/vendor/f5/nginx_open_source"},{"vendor":"f5","product":"nginx plus","name":"NGINX Plus","label":"nginx plus","ecosystem":null,"cpePart":"a","purl":null,"purlType":null,"versions":[{"text":"≥ 37.1.0, < 37.1.0.1","noFixRecorded":false,"fixedIn":null},{"text":"≥ 37.0.0, < 37.0.5.1","noFixRecorded":false,"fixedIn":null},{"text":"≥ R36","noFixRecorded":true,"fixedIn":null},{"text":"≥ R35","noFixRecorded":true,"fixedIn":null},{"text":"≥ R34","noFixRecorded":true,"fixedIn":null},{"text":"≥ R33","noFixRecorded":true,"fixedIn":null}],"versionsText":"≥ 37.1.0, < 37.1.0.1 | ≥ 37.0.0, < 37.0.5.1 | ≥ R36 (No fix recorded) | ≥ R35 (No fix recorded) | ≥ R34 (No fix recorded) | ≥ R33 (No fix recorded)","eol":null,"hubHref":"/vendor/f5/nginx_plus"}],"affectedCount":4,"eol":{"hasEol":false,"count":0},"references":[{"url":"https://my.f5.com/manage/s/article/K000162606","label":"my.f5.com/manage/s/article/K000162606","hostname":"my.f5.com","tags":["Vendor Advisory","REPORT"]},{"url":"https://security-tracker.debian.org/tracker/CVE-2026-97629","label":"security-tracker.debian.org/tracker/CVE-2026-97629","hostname":"security-tracker.debian.org","tags":["Advisory"]},{"url":"https://ubuntu.com/security/CVE-2026-97629","label":"ubuntu.com/security/CVE-2026-97629","hostname":"ubuntu.com","tags":["REPORT"]},{"url":"https://www.cve.org/CVERecord?id=CVE-2026-97629","label":"www.cve.org/CVERecord?id=CVE-2026-97629","hostname":"www.cve.org","tags":["REPORT"]}],"lineage":{"upstream":[],"downstream":["OPENSUSE-SU-2026:12143-1"],"duplicates":[],"related":["OPENSUSE-SU-2026:12143-1"]},"timeline":[{"kind":"published","date":"2026-10-14T14:40:26.740Z","label":"Published","detail":"Vulnerability first disclosed.","source":null},{"kind":"modified","date":"2026-10-15T16:43:47.036Z","label":"Last modified","detail":"Vulnerability information updated.","source":null}],"risk":{"score":33,"level":"medium","profile":"Default","thresholds":{"critical":75,"high":50,"medium":25,"low":10}},"meta":{"dataAsOf":"2026-10-19T06:18:18.953Z","stale":false,"partial":false}}