{"id":"CVE-2026-101025","aliases":["AZL-108455","BELL-CVE-2026-101025","DEBIAN-CVE-2026-101025","EUVD-2026-101120","GHSA-4jj4-r79f-9v3x","UBUNTU-CVE-2026-101025"],"status":"published","title":"NGINX ngx_http_js_module vulnerability","description":"Description\n\n\nNGINX JavaScript (njs) has a vulnerability where the built-in njs engine leaks a libxml2 parser context when xml.parse() fails. The failure path did not register cleanup and the context was not released for the lifetime of the process. An unauthenticated attacker may send requests with malformed XML and can cause unbounded memory growth in long-lived NGINX worker processes.\n\nImpact\n\n\nThis vulnerability may allow remote attackers to send requests that trigger repeated parsing of malformed XML and may lead to NGINX worker termination or denial of service. There is no control plane exposure; this is a data plane issue only.\n\n\n\n Note: Software versions which have reached End of Technical Support (EoTS) are not evaluated.","severity":{"version":"4.0","score":6.9,"vector":"CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:N/VI:N/VA:L/SC:N/SI:N/SA:N","level":"medium","assessor":"cna","from":"cve"},"epss":{"day":"2026-11-09","score":0.00316,"percentile":0.24714,"model":"v2026.06.15"},"facts":{"in_kev":false,"known_exploited":false,"public_exploit":false,"fix_available":true},"cwes":["CWE-401"],"published":"2026-10-14T14:40:29Z","modified":"2026-10-28T17:50:26Z","fixes":[{"ecosystem":"Alpaquita:23","package":"nginx","fixed_in":["1.30.6-r0"],"sources":["osv"]},{"ecosystem":"Alpaquita:23","package":"nginx-base","fixed_in":["1.30.6-r0"],"sources":["osv"]},{"ecosystem":"Alpaquita:25","package":"nginx","fixed_in":["1.30.6-r0"],"sources":["osv"]},{"ecosystem":"Alpaquita:25","package":"nginx-base","fixed_in":["1.30.6-r0"],"sources":["osv"]},{"ecosystem":"Alpaquita:stream","package":"nginx","fixed_in":["1.30.6-r0"],"sources":["osv"]},{"ecosystem":"Alpaquita:stream","package":"nginx-base","fixed_in":["1.30.6-r0"],"sources":["osv"]},{"ecosystem":"BellSoft Hardened Containers:23","package":"nginx-base","fixed_in":["1.30.6-r0"],"sources":["osv"]},{"ecosystem":"BellSoft Hardened Containers:25","package":"nginx-base","fixed_in":["1.30.6-r0"],"sources":["osv"]},{"ecosystem":"BellSoft Hardened Containers:stream","package":"nginx-base","fixed_in":["1.30.6-r0"],"sources":["osv"]},{"ecosystem":"Debian:14","package":"libnginx-mod-js","fixed_in":["1.0.2-1"],"sources":["osv"]}],"affected":[{"source":"osv","ecosystem":"Azure Linux:3","package":"nginx","ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"},{"last_affected":"1.30.4-1"}]}]},{"source":"osv","ecosystem":"Alpaquita:23","package":"nginx","ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"1.22.1-r0"},{"fixed":"1.30.6-r0"}]}]},{"source":"osv","ecosystem":"Alpaquita:23","package":"nginx-base","ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"1.30.3-r0"},{"fixed":"1.30.6-r0"}]}]},{"source":"osv","ecosystem":"Alpaquita:25","package":"nginx","ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"1.28.0-r3"},{"fixed":"1.30.6-r0"}]}]},{"source":"osv","ecosystem":"Alpaquita:25","package":"nginx-base","ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"1.30.3-r0"},{"fixed":"1.30.6-r0"}]}]},{"source":"osv","ecosystem":"Alpaquita:stream","package":"nginx","ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"1.22.1-r0"},{"fixed":"1.30.6-r0"}]}]},{"source":"osv","ecosystem":"Alpaquita:stream","package":"nginx-base","ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"1.30.3-r0"},{"fixed":"1.30.6-r0"}]}]},{"source":"osv","ecosystem":"BellSoft Hardened Containers:23","package":"nginx-base","ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"1.30.3-r0"},{"fixed":"1.30.6-r0"}]}]},{"source":"osv","ecosystem":"BellSoft Hardened Containers:25","package":"nginx-base","ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"1.30.3-r0"},{"fixed":"1.30.6-r0"}]}]},{"source":"osv","ecosystem":"BellSoft Hardened Containers:stream","package":"nginx-base","ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"1.30.3-r0"},{"fixed":"1.30.6-r0"}]}]},{"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","1.0.2-1","1.0.2-2"]},{"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","1.0.2-1","1.0.2-2"]},{"source":"osv","ecosystem":"Debian:14","package":"libnginx-mod-js","ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"},{"fixed":"1.0.2-1"}]}],"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","1.0.1-1"]},{"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/K000162614","tags":["vendor-advisory","report"]},{"url":"https://nvd.nist.gov/vuln/detail/CVE-2026-101025","tags":["web"]},{"url":"https://github.com/advisories/GHSA-4jj4-r79f-9v3x"},{"url":"https://docs.bell-sw.com/security/cves/CVE-2026-101025","tags":["advisory"]},{"url":"https://security-tracker.debian.org/tracker/CVE-2026-101025","tags":["advisory"]},{"url":"https://ubuntu.com/security/CVE-2026-101025","tags":["report"]},{"url":"https://www.cve.org/CVERecord?id=CVE-2026-101025","tags":["report"]}],"sources":{"cve":[{"id":"CVE-2026-101025","title":"NGINX ngx_http_js_module vulnerability","description":"Description\n\n\nNGINX JavaScript (njs) has a vulnerability where the built-in njs engine leaks a libxml2 parser context when xml.parse() fails. The failure path did not register cleanup and the context was not released for the lifetime of the process. An unauthenticated attacker may send requests with malformed XML and can cause unbounded memory growth in long-lived NGINX worker processes.\n\nImpact\n\n\nThis vulnerability may allow remote attackers to send requests that trigger repeated parsing of malformed XML and may lead to NGINX worker termination or denial of service. There is no control plane exposure; this is a data plane issue only.\n\n\n\n Note: Software versions which have reached End of Technical Support (EoTS) are not evaluated.","status":"published","published":"2026-10-14T14:40:29.324Z","modified":"2026-10-15T16:43:46.495Z","cvss":[{"version":"4.0","score":6.9,"vector":"CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:N/VI:N/VA:L/SC:N/SI:N/SA:N","level":"medium","assessor":"cna"},{"version":"3.1","score":5.3,"vector":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:L","level":"medium","assessor":"cna"}],"cwes":["CWE-401"],"updated_at":"2026-11-02T14:20:09.448255Z"}],"euvd":[{"id":"EUVD-2026-101120","description":"Description\n\n\nNGINX JavaScript (njs) has a vulnerability where the built-in njs engine leaks a libxml2 parser context when xml.parse() fails. The failure path did not register cleanup and the context was not released for the lifetime of the process. An unauthenticated attacker may send requests with malformed XML and can cause unbounded memory growth in long-lived NGINX worker processes.\n\nImpact\n\n\nThis vulnerability may allow remote attackers to send requests that trigger repeated parsing of malformed XML and may lead to NGINX worker termination or denial of service. There is no control plane exposure; this is a data plane issue only.\n\n\n\n Note: Software versions which have reached End of Technical Support (EoTS) are not evaluated.","status":"published","published":"2026-10-14T14:40:29Z","modified":"2026-10-15T16:43:46Z","cvss":[{"version":"4.0","score":6.9,"vector":"CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:N/VI:N/VA:L/SC:N/SI:N/SA:N","level":"medium"}],"updated_at":"2026-11-02T17:00:11.901066Z"}],"ghsa":[{"id":"GHSA-4jj4-r79f-9v3x","title":"Description\n\n\nNGINX JavaScript (njs) has a vulnerability where the built-in njs engine leaks a...","description":"Description\n\n\nNGINX JavaScript (njs) has a vulnerability where the built-in njs engine leaks a libxml2 parser context when xml.parse() fails. The failure path did not register cleanup and the context was not released for the lifetime of the process. An unauthenticated attacker may send requests with malformed XML and can cause unbounded memory growth in long-lived NGINX worker processes.\n\nImpact\n\n\nThis vulnerability may allow remote attackers to send requests that trigger repeated parsing of malformed XML and may lead to NGINX worker termination or denial of service. There is no control plane exposure; this is a data plane issue only.\n\n\n\n Note: Software versions which have reached End of Technical Support (EoTS) are not evaluated.","status":"published","published":"2026-10-14T15:32:22Z","modified":"2026-10-14T15:32:28Z","cvss":[{"version":"4.0","score":6.9,"vector":"CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:N/VI:N/VA:L/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":"medium"},{"version":"3.1","score":5.3,"vector":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:L","level":"medium"}],"cwes":["CWE-401"],"updated_at":"2026-11-02T15:13:26.117603Z"}],"nvd":[{"id":"CVE-2026-101025","description":"Description\n\n\nNGINX JavaScript (njs) has a vulnerability where the built-in njs engine leaks a libxml2 parser context when xml.parse() fails. The failure path did not register cleanup and the context was not released for the lifetime of the process. An unauthenticated attacker may send requests with malformed XML and can cause unbounded memory growth in long-lived NGINX worker processes.\n\nImpact\n\n\nThis vulnerability may allow remote attackers to send requests that trigger repeated parsing of malformed XML and may lead to NGINX worker termination or denial of service. There is no control plane exposure; this is a data plane issue only.\n\n\n\n Note: Software versions which have reached End of Technical Support (EoTS) are not evaluated.","status":"published","published":"2026-10-14T15:17:01.88Z","modified":"2026-10-15T17:17:08.247Z","cvss":[{"version":"4.0","score":6.9,"vector":"CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:N/VI:N/VA:L/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":"medium","assessor":"secondary"},{"version":"3.1","score":5.3,"vector":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:L","level":"medium","assessor":"secondary"}],"cwes":["CWE-401"],"updated_at":"2026-11-02T14:12:58.99337Z"}],"osv":[{"id":"BELL-CVE-2026-101025","status":"published","published":"2026-10-20T06:09:24.645662Z","modified":"2026-10-22T08:30:06.551917831Z","cvss":[{"version":"3.1","score":5.3,"vector":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:L","level":"medium"}],"updated_at":"2026-11-02T15:28:23.037038Z"},{"id":"DEBIAN-CVE-2026-101025","description":"Description   NGINX JavaScript (njs) has a vulnerability where the built-in njs engine leaks a libxml2 parser context when xml.parse() fails. The failure path did not register cleanup and the context was not released for the lifetime of the process. An unauthenticated attacker may send requests with malformed XML and can cause unbounded memory growth in long-lived NGINX worker processes.  Impact   This vulnerability may allow remote attackers to send requests that trigger repeated parsing of malformed XML and may lead to NGINX worker termination or denial of service. 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":"2026-10-14T15:17:01.88Z","modified":"2026-10-24T05:00:09.249577798Z","cvss":[{"version":"4.0","score":6.9,"vector":"CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:N/VI:N/VA:L/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":"medium"}],"updated_at":"2026-11-02T15:45:48.440897Z"},{"id":"UBUNTU-CVE-2026-101025","description":"Description NGINX JavaScript (njs) has a vulnerability where the built-in njs engine leaks a libxml2 parser context when xml.parse() fails. The failure path did not register cleanup and the context was not released for the lifetime of the process. An unauthenticated attacker may send requests with malformed XML and can cause unbounded memory growth in long-lived NGINX worker processes. Impact This vulnerability may allow remote attackers to send requests that trigger repeated parsing of malformed XML and may lead to NGINX worker termination or denial of service. 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":"2026-10-14T15:17:00Z","modified":"2026-10-28T17:50:26Z","cvss":[{"version":"3.1","score":5.3,"vector":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:L","level":"medium"},{"version":"4.0","score":6.9,"vector":"CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:N/VI:N/VA:L/SC:N/SI:N/SA:N","level":"medium"}],"updated_at":"2026-11-02T16:55:58.519486Z"},{"id":"AZL-108455","title":"CVE-2026-101025 affecting package nginx 1.30.4-1","description":"Description\n\n\nNGINX JavaScript (njs) has a vulnerability where the built-in njs engine leaks a libxml2 parser context when xml.parse() fails. The failure path did not register cleanup and the context was not released for the lifetime of the process. An unauthenticated attacker may send requests with malformed XML and can cause unbounded memory growth in long-lived NGINX worker processes.\n\nImpact\n\n\nThis vulnerability may allow remote attackers to send requests that trigger repeated parsing of malformed XML and may lead to NGINX worker termination or denial of service. There is no control plane exposure; this is a data plane issue only.\n\n\n\n Note: Software versions which have reached End of Technical Support (EoTS) are not evaluated.","status":"published","published":"2026-10-14T15:17:01Z","modified":"2026-10-27T05:36:16Z","updated_at":"2026-11-02T15:28:01.725816Z"}]}}