{"schemaVersion":3,"id":"CVE-2026-97205","aliases":["DEBIAN-CVE-2026-97205","UBUNTU-CVE-2026-97205"],"status":"published","duplicateOf":null,"title":null,"description":"NGINX Plus and NGINX Open Source have a vulnerability in the ngx_http_core_module module. When asynchronous file I/O (AIO) is enabled in certain configurations, processing a Server Side Includes (SSI) page containing “include virtual” commands may trigger a Use-After-Free (UAF) in the NGINX worker process. This may cause memory corruption or a worker process crash. Additionally, attackers can execute code on systems with Address Space Layout Randomization (ASLR) disabled or when the attacker can bypass ASLR.\n\nImpact:\nThis vulnerability may allow remote attackers to cause a denial-of-service (DoS) on the NGINX system, corrupt its memory, or possibly trigger code execution. There is no control plane exposure; this is a data plane issue only.\n\n\n\n\nNote: Software versions which have reached End of Technical Support (EoTS) are not evaluated.","dates":{"published":"2026-10-14T14:40:27.487Z","modified":"2026-10-15T10:31:15.547Z","reserved":null,"kevAdded":[],"kevDue":[]},"cvss":{"headline":{"score":9.2,"severity":"critical","version":"4.0","versionLabel":"v4.0","source":"CVE.org","vector":"CVSS:4.0/AV:N/AC:H/AT:N/PR:N/UI:N/VC:H/VI:H/VA:H/SC:N/SI:N/SA:N","computed":false,"selection":"backend-summary"},"metrics":[{"version":"4.0","versionLabel":"v4.0","source":"CVE.org","score":9.2,"severity":"critical","vector":"CVSS:4.0/AV:N/AC:H/AT:N/PR:N/UI:N/VC:H/VI:H/VA:H/SC:N/SI:N/SA:N","exploitability":null,"impact":null,"computed":false},{"version":"3.1","versionLabel":"v3.1","source":"CVE.org","score":8.1,"severity":"high","vector":"CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:H/I:H/A:H","exploitability":null,"impact":null,"computed":false},{"version":"4.0","versionLabel":"v4.0","source":"NVD","score":9.2,"severity":"critical","vector":"CVSS:4.0/AV:N/AC:H/AT:N/PR:N/UI:N/VC:H/VI:H/VA:H/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:H/PR:N/UI:N/S:U/C:H/I:H/A:H","exploitability":null,"impact":null,"computed":false},{"version":"4.0","versionLabel":"v4.0","source":"OSV · Debian","score":9.2,"severity":"critical","vector":"CVSS:4.0/AV:N/AC:H/AT:N/PR:N/UI:N/VC:H/VI:H/VA:H/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":9.2,"severity":"critical","vector":"CVSS:4.0/AV:N/AC:H/AT:N/PR:N/UI:N/VC:H/VI:H/VA:H/SC:N/SI:N/SA:N","exploitability":null,"impact":null,"computed":true},{"version":"3.1","versionLabel":"v3.1","source":"OSV · Ubuntu","score":8.1,"severity":"high","vector":"CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:H/I:H/A:H","exploitability":5.6,"impact":9.8,"computed":true}]},"epss":{"probability":0.00441,"percentile":0.36902,"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":0.00441,"percentile":null},{"date":"2026-10-16T00:00:00.000Z","score":0.00441,"percentile":null},{"date":"2026-10-17T00:00:00.000Z","score":0.00441,"percentile":null},{"date":"2026-10-18T00:00:00.000Z","score":0.00441,"percentile":0.36902}],"last30":[{"date":"2026-10-15T00:00:00.000Z","score":0.00441,"percentile":null},{"date":"2026-10-16T00:00:00.000Z","score":0.00441,"percentile":null},{"date":"2026-10-17T00:00:00.000Z","score":0.00441,"percentile":null},{"date":"2026-10-18T00:00:00.000Z","score":0.00441,"percentile":0.36902}]},"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-416","name":"Use After Free","description":"The product reuses or references memory after it has been freed. At some point afterward, the memory may be allocated again and saved in another pointer, while the original pointer references a location somewhere within the new allocation. Any operations using the original pointer are no longer valid because the memory \"belongs\" to the code that operates on the new pointer.","type":"weakness","status":"Stable","abstraction":"Variant","likelihoodOfExploit":"High","url":"https://cwe.mitre.org/data/definitions/416.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}],"versionsText":"≥ 1.31.0, < 1.31.7 | ≥ 1.30.0, < 1.30.6","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/K000162608","label":"my.f5.com/manage/s/article/K000162608","hostname":"my.f5.com","tags":["Vendor Advisory","REPORT"]},{"url":"https://security-tracker.debian.org/tracker/CVE-2026-97205","label":"security-tracker.debian.org/tracker/CVE-2026-97205","hostname":"security-tracker.debian.org","tags":["Advisory"]},{"url":"https://ubuntu.com/security/CVE-2026-97205","label":"ubuntu.com/security/CVE-2026-97205","hostname":"ubuntu.com","tags":["REPORT"]},{"url":"https://www.cve.org/CVERecord?id=CVE-2026-97205","label":"www.cve.org/CVERecord?id=CVE-2026-97205","hostname":"www.cve.org","tags":["REPORT"]}],"lineage":{"upstream":[],"downstream":["CVE-2026-15176","OPENSUSE-SU-2026:12143-1"],"duplicates":[],"related":["OPENSUSE-SU-2026:12143-1"]},"timeline":[{"kind":"published","date":"2026-10-14T14:40:27.487Z","label":"Published","detail":"Vulnerability first disclosed.","source":null},{"kind":"modified","date":"2026-10-15T10:31:15.547Z","label":"Last modified","detail":"Vulnerability information updated.","source":null}],"risk":{"score":70,"level":"high","profile":"Default","thresholds":{"critical":75,"high":50,"medium":25,"low":10}},"meta":{"dataAsOf":"2026-10-19T06:19:12.166Z","stale":false,"partial":false}}