{"id":"UBUNTU-CVE-2026-78222","details":"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.","modified":"2026-09-16T11:41:46Z","published":"2026-09-02T16:17:00Z","upstream":["CVE-2026-78222"],"references":[{"type":"REPORT","url":"https://ubuntu.com/security/CVE-2026-78222"},{"type":"REPORT","url":"https://www.cve.org/CVERecord?id=CVE-2026-78222"},{"type":"REPORT","url":"https://my.f5.com/manage/s/article/K000162603"}],"affected":[{"package":{"name":"libnginx-mod-js","ecosystem":"Ubuntu:24.04:LTS","purl":"pkg:deb/ubuntu/libnginx-mod-js?arch=source&distro=noble"},"ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"}]}],"versions":["0.7.12-2","0.8.2-1ubuntu1"],"ecosystem_specific":{"binaries":[{"binary_name":"libnginx-mod-http-js","binary_version":"0.8.2-1ubuntu1"},{"binary_name":"libnginx-mod-stream-js","binary_version":"0.8.2-1ubuntu1"},{"binary_version":"0.8.2-1ubuntu1","binary_name":"njs"}]},"database_specific":{"source":"https://github.com/canonical/ubuntu-security-notices/blob/main/osv/cve/2026/UBUNTU-CVE-2026-78222.json"}},{"package":{"name":"libnginx-mod-js","ecosystem":"Ubuntu:Pro:26.04:LTS","purl":"pkg:deb/ubuntu/libnginx-mod-js?arch=source&distro=esm-apps%2Fresolute"},"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"],"ecosystem_specific":{"binaries":[{"binary_version":"0.9.4-1ubuntu0.1~esm1","binary_name":"libnginx-mod-http-js"},{"binary_name":"libnginx-mod-stream-js","binary_version":"0.9.4-1ubuntu0.1~esm1"},{"binary_name":"njs","binary_version":"0.9.4-1ubuntu0.1~esm1"}]},"database_specific":{"source":"https://github.com/canonical/ubuntu-security-notices/blob/main/osv/cve/2026/UBUNTU-CVE-2026-78222.json"}}],"schema_version":"1.9.0","severity":[{"type":"CVSS_V3","score":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H"},{"type":"CVSS_V4","score":"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"},{"type":"Ubuntu","score":"medium"}]}