{"id":"CVE-2026-78222","aliases":["AZL-99300","DEBIAN-CVE-2026-78222","EUVD-2026-70144","GHSA-27f9-cgjj-wvcv","UBUNTU-CVE-2026-78222"],"status":"published","title":"NGINX ngx_http_js_module vulnerability","description":"A vulnerability exists in NGINX JavaScript where a malformed HTTP response received by ngx.fetch() can crash an NGINX worker when trusted JavaScript reads Response.statusText. Exploitation requires control or influence over the fetched HTTP response.\n\nImpact:\nThis vulnerability may allow remote attackers to cause a denial-of-service (DoS) on the NGINX system. 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.","severity":{"version":"4.0","score":8.7,"vector":"CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:N/VI:N/VA:H/SC:N/SI:N/SA:N","level":"high","assessor":"cna","from":"cve"},"epss":{"day":"2026-11-12","score":0.00623,"percentile":0.50396,"model":"v2026.06.15"},"facts":{"in_kev":false,"known_exploited":false,"public_exploit":false,"fix_available":true},"cwes":["CWE-476"],"published":"2026-09-02T15:40:55Z","modified":"2026-10-17T13:01:09Z","fixes":[{"ecosystem":"Azure Linux:3","package":"nginx","fixed_in":["1.30.4-1"],"sources":["osv"]},{"ecosystem":"Debian:14","package":"libnginx-mod-js","fixed_in":["1.0.1-1"],"sources":["osv"]}],"affected":[{"source":"osv","ecosystem":"Azure Linux:3","package":"nginx","ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"},{"fixed":"1.30.4-1"}]}]},{"source":"osv","ecosystem":"Debian:12","package":"libnginx-mod-js","ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"}]}],"versions":["0.7.12-1","0.7.12-2","0.7.12-2~exp1","0.7.12-2~exp2","0.7.9-2","0.8.0-1","0.8.1-1","0.8.2-1","0.8.4-1","0.8.5-1","0.8.9-1","0.9.1-1","0.9.4-1","0.9.6-1","0.9.8-1","0.9.9-1","0.9.9-2","1.0.0-1","1.0.0-2","1.0.0-3","1.0.0-4","1.0.1-1"]},{"source":"osv","ecosystem":"Debian:13","package":"libnginx-mod-js","ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"}]}],"versions":["0.8.9-1","0.9.1-1","0.9.4-1","0.9.6-1","0.9.8-1","0.9.9-1","0.9.9-2","1.0.0-1","1.0.0-2","1.0.0-3","1.0.0-4","1.0.1-1"]},{"source":"osv","ecosystem":"Debian:14","package":"libnginx-mod-js","ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"},{"fixed":"1.0.1-1"}]}],"versions":["0.8.9-1","0.9.1-1","0.9.4-1","0.9.6-1","0.9.8-1","0.9.9-1","0.9.9-2","1.0.0-1","1.0.0-2","1.0.0-3","1.0.0-4"]},{"source":"osv","ecosystem":"Ubuntu:24.04:LTS","package":"libnginx-mod-js","ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"}]}],"versions":["0.7.12-2","0.8.2-1ubuntu1"]},{"source":"osv","ecosystem":"Ubuntu:26.10","package":"libnginx-mod-js","ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"}]}],"versions":["0.9.4-1build2","0.9.9-2","1.0.0-1","1.0.0-3"]},{"source":"osv","ecosystem":"Ubuntu:Pro:26.04:LTS","package":"libnginx-mod-js","ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"}]}],"versions":["0.9.1-1ubuntu2","0.9.1-1ubuntu3","0.9.4-1~build1","0.9.4-1","0.9.4-1build1","0.9.4-1build2","0.9.4-1ubuntu0.1~esm1"]}],"products":[{"vendor":"f5","product":"nginx javascript"}],"references":[{"url":"https://my.f5.com/manage/s/article/K000162603","tags":["vendor-advisory","report"]},{"url":"https://nvd.nist.gov/vuln/detail/CVE-2026-78222","tags":["web"]},{"url":"https://github.com/advisories/GHSA-27f9-cgjj-wvcv"},{"url":"https://security-tracker.debian.org/tracker/CVE-2026-78222","tags":["advisory"]},{"url":"https://ubuntu.com/security/CVE-2026-78222","tags":["report"]},{"url":"https://www.cve.org/CVERecord?id=CVE-2026-78222","tags":["report"]}],"sources":{"cve":[{"id":"CVE-2026-78222","title":"NGINX ngx_http_js_module vulnerability","description":"A vulnerability exists in NGINX JavaScript where a malformed HTTP response received by ngx.fetch() can crash an NGINX worker when trusted JavaScript reads Response.statusText. Exploitation requires control or influence over the fetched HTTP response.\n\nImpact:\nThis vulnerability may allow remote attackers to cause a denial-of-service (DoS) on the NGINX system. 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.","status":"published","published":"2026-09-02T15:40:55.467Z","modified":"2026-09-02T17:59:40.463Z","cvss":[{"version":"4.0","score":8.7,"vector":"CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:N/VI:N/VA:H/SC:N/SI:N/SA:N","level":"high","assessor":"cna"},{"version":"3.1","score":7.5,"vector":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H","level":"high","assessor":"cna"}],"cwes":["CWE-476"],"updated_at":"2026-11-02T13:34:59.78118Z"}],"euvd":[{"id":"EUVD-2026-70144","description":"A vulnerability exists in NGINX JavaScript where a malformed HTTP response received by ngx.fetch() can crash an NGINX worker when trusted JavaScript reads Response.statusText. Exploitation requires control or influence over the fetched HTTP response.\n\nImpact:\nThis vulnerability may allow remote attackers to cause a denial-of-service (DoS) on the NGINX system. 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.","status":"published","published":"2026-09-02T15:40:55Z","modified":"2026-09-02T17:59:40Z","cvss":[{"version":"4.0","score":8.7,"vector":"CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:N/VI:N/VA:H/SC:N/SI:N/SA:N","level":"high"}],"updated_at":"2026-11-02T18:01:14.689075Z"}],"ghsa":[{"id":"GHSA-27f9-cgjj-wvcv","title":"A vulnerability exists in NGINX JavaScript where a malformed HTTP response received by ngx.fetch(...","description":"A vulnerability exists in NGINX JavaScript where a malformed HTTP response received by ngx.fetch() can crash an NGINX worker when trusted JavaScript reads Response.statusText. Exploitation requires control or influence over the fetched HTTP response.\n\nImpact:\nThis vulnerability may allow remote attackers to cause a denial-of-service (DoS) on the NGINX system. 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.","status":"published","published":"2026-09-02T18:32:11Z","modified":"2026-09-02T18:32:17Z","cvss":[{"version":"4.0","score":8.7,"vector":"CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:N/VI:N/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","level":"high"},{"version":"3.1","score":7.5,"vector":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H","level":"high"}],"cwes":["CWE-476"],"updated_at":"2026-11-02T15:11:17.943368Z"}],"nvd":[{"id":"CVE-2026-78222","description":"A vulnerability exists in NGINX JavaScript where a malformed HTTP response received by ngx.fetch() can crash an NGINX worker when trusted JavaScript reads Response.statusText. Exploitation requires control or influence over the fetched HTTP response.\n\nImpact:\nThis vulnerability may allow remote attackers to cause a denial-of-service (DoS) on the NGINX system. 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.","status":"published","published":"2026-09-02T16:17:23.557Z","modified":"2026-09-02T19:23:13.66Z","cvss":[{"version":"4.0","score":8.7,"vector":"CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:N/VI:N/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","level":"high","assessor":"secondary"},{"version":"3.1","score":7.5,"vector":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H","level":"high","assessor":"secondary"}],"cwes":["CWE-476"],"updated_at":"2026-11-02T14:12:43.399612Z"}],"osv":[{"id":"DEBIAN-CVE-2026-78222","description":"A vulnerability exists in NGINX JavaScript where a malformed HTTP response received by ngx.fetch() can crash an NGINX worker when trusted JavaScript reads Response.statusText. Exploitation requires control or influence over the fetched HTTP response.  Impact: This vulnerability may allow remote attackers to cause a denial-of-service (DoS) on the NGINX system. There is no control plane exposure; this is a data plane issue only.     Note: Software versions which have reached End of Technical Support (EoTS) are not evaluated.","status":"published","published":"2026-09-02T16:17:23.557Z","modified":"2026-10-01T03:03:42.636964851Z","cvss":[{"version":"4.0","score":8.7,"vector":"CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:N/VI:N/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","level":"high"}],"updated_at":"2026-11-02T15:46:03.502256Z"},{"id":"UBUNTU-CVE-2026-78222","description":"A vulnerability exists in NGINX JavaScript where a malformed HTTP response received by ngx.fetch() can crash an NGINX worker when trusted JavaScript reads Response.statusText. Exploitation requires control or influence over the fetched HTTP response. Impact: This vulnerability may allow remote attackers to cause a denial-of-service (DoS) on the NGINX system. There is no control plane exposure; this is a data plane issue only. Note: Software versions which have reached End of Technical Support (EoTS) are not evaluated.","status":"published","published":"2026-09-02T16:17:00Z","modified":"2026-10-17T13:01:09.035561149Z","cvss":[{"version":"3.1","score":7.5,"vector":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H","level":"high"},{"version":"4.0","score":8.7,"vector":"CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:N/VI:N/VA:H/SC:N/SI:N/SA:N","level":"high"}],"updated_at":"2026-11-02T16:57:18.015985Z"},{"id":"AZL-99300","title":"CVE-2026-78222 affecting package nginx for versions less than 1.30.4-1","description":"A vulnerability exists in NGINX JavaScript where a malformed HTTP response received by ngx.fetch() can crash an NGINX worker when trusted JavaScript reads Response.statusText. Exploitation requires control or influence over the fetched HTTP response.\n\nImpact:\nThis vulnerability may allow remote attackers to cause a denial-of-service (DoS) on the NGINX system. 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.","status":"published","published":"2026-09-02T16:17:23Z","modified":"2026-09-23T14:17:52.131071555Z","updated_at":"2026-11-02T15:28:12.596039Z"}]}}