{"id":"USN-8955-1","summary":"nginx vulnerabilities","details":"It was discovered that nginx incorrectly handled certain configurations\nusing the alias directive together with rewrite rules. A remote attacker\ncould possibly use this issue to cause nginx to crash, resulting in a\ndenial of service, or execute arbitrary code.\n(CVE-2026-15176)\n\nIt was discovered that nginx incorrectly handled map directives using\nregex matching under certain circumstances. A remote attacker could\npossibly use this issue to cause nginx to crash, resulting in a denial\nof service, or execute arbitrary code.\n(CVE-2026-93479)\n\nIt was discovered that nginx incorrectly handled HTTP/3 requests when\nproxy_request_buffering was enabled. This issue only affected\nUbuntu 26.04 LTS and Ubuntu 26.10. A remote attacker could possibly use\nthis issue to inject data into proxied requests.\n(CVE-2026-95101)\n\nIt was discovered that nginx incorrectly handled asynchronous file I/O\nin certain configurations with Server Side Includes pages. A remote\nattacker could possibly use this issue to cause nginx to crash,\nresulting in a denial of service, or execute arbitrary code.\n(CVE-2026-97205)\n\nIt was discovered that nginx incorrectly handled SSL session ticket keys\nwhen configured with a shared session cache but without explicit ticket\nkey rotation. This issue only affected Ubuntu 24.04 LTS, Ubuntu 26.04 LTS,\nand Ubuntu 26.10. A remote attacker\ncould possibly use this issue to forge client SSL sessions and bypass\nclient certificate verification.\n(CVE-2026-97629)","modified":"2026-10-26T22:46:19.977872622Z","published":"2026-10-26T15:34:05Z","related":["UBUNTU-CVE-2026-15176","UBUNTU-CVE-2026-93479","UBUNTU-CVE-2026-95101","UBUNTU-CVE-2026-97205","UBUNTU-CVE-2026-97629"],"upstream":["CVE-2026-15176","CVE-2026-93479","CVE-2026-95101","CVE-2026-97205","CVE-2026-97629","UBUNTU-CVE-2026-15176","UBUNTU-CVE-2026-93479","UBUNTU-CVE-2026-95101","UBUNTU-CVE-2026-97205","UBUNTU-CVE-2026-97629"],"references":[{"type":"ADVISORY","url":"https://ubuntu.com/security/notices/USN-8955-1"},{"type":"REPORT","url":"https://ubuntu.com/security/CVE-2026-15176"},{"type":"REPORT","url":"https://ubuntu.com/security/CVE-2026-93479"},{"type":"REPORT","url":"https://ubuntu.com/security/CVE-2026-95101"},{"type":"REPORT","url":"https://ubuntu.com/security/CVE-2026-97205"},{"type":"REPORT","url":"https://ubuntu.com/security/CVE-2026-97629"}],"affected":[{"package":{"name":"nginx","ecosystem":"Ubuntu:22.04:LTS","purl":"pkg:deb/ubuntu/nginx?arch=source&distro=jammy"},"ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"},{"fixed":"1.18.0-6ubuntu14.22"}]}],"versions":["1.18.0-6ubuntu11","1.18.0-6ubuntu12","1.18.0-6ubuntu14","1.18.0-6ubuntu14.1","1.18.0-6ubuntu14.2","1.18.0-6ubuntu14.3","1.18.0-6ubuntu14.4","1.18.0-6ubuntu14.5","1.18.0-6ubuntu14.6","1.18.0-6ubuntu14.7","1.18.0-6ubuntu14.8","1.18.0-6ubuntu14.10","1.18.0-6ubuntu14.11","1.18.0-6ubuntu14.12","1.18.0-6ubuntu14.13","1.18.0-6ubuntu14.14","1.18.0-6ubuntu14.15","1.18.0-6ubuntu14.16","1.18.0-6ubuntu14.17","1.18.0-6ubuntu14.18","1.18.0-6ubuntu14.19","1.18.0-6ubuntu14.20","1.18.0-6ubuntu14.21"],"ecosystem_specific":{"availability":"No subscription required","binaries":[{"binary_version":"1.18.0-6ubuntu14.22","binary_name":"libnginx-mod-http-auth-pam"},{"binary_name":"libnginx-mod-http-cache-purge","binary_version":"1.18.0-6ubuntu14.22"},{"binary_name":"libnginx-mod-http-dav-ext","binary_version":"1.18.0-6ubuntu14.22"},{"binary_name":"libnginx-mod-http-echo","binary_version":"1.18.0-6ubuntu14.22"},{"binary_name":"libnginx-mod-http-fancyindex","binary_version":"1.18.0-6ubuntu14.22"},{"binary_version":"1.18.0-6ubuntu14.22","binary_name":"libnginx-mod-http-geoip"},{"binary_name":"libnginx-mod-http-geoip2","binary_version":"1.18.0-6ubuntu14.22"},{"binary_name":"libnginx-mod-http-headers-more-filter","binary_version":"1.18.0-6ubuntu14.22"},{"binary_version":"1.18.0-6ubuntu14.22","binary_name":"libnginx-mod-http-image-filter"},{"binary_name":"libnginx-mod-http-ndk","binary_version":"1.18.0-6ubuntu14.22"},{"binary_version":"1.18.0-6ubuntu14.22","binary_name":"libnginx-mod-http-perl"},{"binary_version":"1.18.0-6ubuntu14.22","binary_name":"libnginx-mod-http-subs-filter"},{"binary_name":"libnginx-mod-http-uploadprogress","binary_version":"1.18.0-6ubuntu14.22"},{"binary_name":"libnginx-mod-http-upstream-fair","binary_version":"1.18.0-6ubuntu14.22"},{"binary_name":"libnginx-mod-http-xslt-filter","binary_version":"1.18.0-6ubuntu14.22"},{"binary_version":"1.18.0-6ubuntu14.22","binary_name":"libnginx-mod-mail"},{"binary_name":"libnginx-mod-nchan","binary_version":"1.18.0-6ubuntu14.22"},{"binary_name":"libnginx-mod-rtmp","binary_version":"1.18.0-6ubuntu14.22"},{"binary_name":"libnginx-mod-stream","binary_version":"1.18.0-6ubuntu14.22"},{"binary_name":"libnginx-mod-stream-geoip","binary_version":"1.18.0-6ubuntu14.22"},{"binary_version":"1.18.0-6ubuntu14.22","binary_name":"libnginx-mod-stream-geoip2"},{"binary_name":"nginx","binary_version":"1.18.0-6ubuntu14.22"},{"binary_name":"nginx-common","binary_version":"1.18.0-6ubuntu14.22"},{"binary_version":"1.18.0-6ubuntu14.22","binary_name":"nginx-core"},{"binary_version":"1.18.0-6ubuntu14.22","binary_name":"nginx-extras"},{"binary_version":"1.18.0-6ubuntu14.22","binary_name":"nginx-full"},{"binary_version":"1.18.0-6ubuntu14.22","binary_name":"nginx-light"}]},"database_specific":{"cves_map":{"cves":[{"severity":[{"type":"CVSS_V3","score":"CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:H/I:H/A:H"},{"score":"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","type":"CVSS_V4"},{"type":"Ubuntu","score":"medium"}],"id":"CVE-2026-15176"},{"id":"CVE-2026-93479","severity":[{"score":"CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:H/I:H/A:H","type":"CVSS_V3"},{"score":"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","type":"CVSS_V4"},{"type":"Ubuntu","score":"medium"}]},{"id":"CVE-2026-97205","severity":[{"type":"CVSS_V3","score":"CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:H/I:H/A:H"},{"type":"CVSS_V4","score":"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"},{"type":"Ubuntu","score":"medium"}]}],"ecosystem":"Ubuntu:22.04:LTS"},"source":"https://github.com/canonical/ubuntu-security-notices/blob/main/osv/usn/USN-8955-1.json"}},{"package":{"name":"nginx","ecosystem":"Ubuntu:24.04:LTS","purl":"pkg:deb/ubuntu/nginx?arch=source&distro=noble"},"ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"},{"fixed":"1.24.0-2ubuntu7.19"}]}],"versions":["1.24.0-1ubuntu1","1.24.0-2ubuntu1","1.24.0-2ubuntu2","1.24.0-2ubuntu3","1.24.0-2ubuntu4","1.24.0-2ubuntu6","1.24.0-2ubuntu7","1.24.0-2ubuntu7.1","1.24.0-2ubuntu7.3","1.24.0-2ubuntu7.4","1.24.0-2ubuntu7.5","1.24.0-2ubuntu7.6","1.24.0-2ubuntu7.7","1.24.0-2ubuntu7.8","1.24.0-2ubuntu7.9","1.24.0-2ubuntu7.10","1.24.0-2ubuntu7.11","1.24.0-2ubuntu7.12","1.24.0-2ubuntu7.13","1.24.0-2ubuntu7.14","1.24.0-2ubuntu7.15","1.24.0-2ubuntu7.16","1.24.0-2ubuntu7.17","1.24.0-2ubuntu7.18"],"ecosystem_specific":{"availability":"No subscription required","binaries":[{"binary_name":"libnginx-mod-http-geoip","binary_version":"1.24.0-2ubuntu7.19"},{"binary_name":"libnginx-mod-http-image-filter","binary_version":"1.24.0-2ubuntu7.19"},{"binary_name":"libnginx-mod-http-perl","binary_version":"1.24.0-2ubuntu7.19"},{"binary_name":"libnginx-mod-http-xslt-filter","binary_version":"1.24.0-2ubuntu7.19"},{"binary_version":"1.24.0-2ubuntu7.19","binary_name":"libnginx-mod-mail"},{"binary_name":"libnginx-mod-stream","binary_version":"1.24.0-2ubuntu7.19"},{"binary_name":"libnginx-mod-stream-geoip","binary_version":"1.24.0-2ubuntu7.19"},{"binary_name":"nginx","binary_version":"1.24.0-2ubuntu7.19"},{"binary_name":"nginx-common","binary_version":"1.24.0-2ubuntu7.19"},{"binary_version":"1.24.0-2ubuntu7.19","binary_name":"nginx-core"},{"binary_version":"1.24.0-2ubuntu7.19","binary_name":"nginx-extras"},{"binary_name":"nginx-full","binary_version":"1.24.0-2ubuntu7.19"},{"binary_name":"nginx-light","binary_version":"1.24.0-2ubuntu7.19"}]},"database_specific":{"cves_map":{"cves":[{"id":"CVE-2026-15176","severity":[{"score":"CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:H/I:H/A:H","type":"CVSS_V3"},{"score":"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","type":"CVSS_V4"},{"score":"medium","type":"Ubuntu"}]},{"id":"CVE-2026-93479","severity":[{"type":"CVSS_V3","score":"CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:H/I:H/A:H"},{"score":"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","type":"CVSS_V4"},{"score":"medium","type":"Ubuntu"}]},{"id":"CVE-2026-97205","severity":[{"type":"CVSS_V3","score":"CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:H/I:H/A:H"},{"type":"CVSS_V4","score":"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"},{"type":"Ubuntu","score":"medium"}]},{"id":"CVE-2026-97629","severity":[{"type":"CVSS_V3","score":"CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:H/I:L/A:N"},{"type":"CVSS_V4","score":"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"},{"type":"Ubuntu","score":"medium"}]}],"ecosystem":"Ubuntu:24.04:LTS"},"source":"https://github.com/canonical/ubuntu-security-notices/blob/main/osv/usn/USN-8955-1.json"}},{"package":{"name":"nginx","ecosystem":"Ubuntu:26.10","purl":"pkg:deb/ubuntu/nginx?arch=source&distro=stonking"},"ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"},{"fixed":"1.30.4-7ubuntu1.1"}]}],"versions":["1.28.3-2ubuntu1","1.30.1-4ubuntu1","1.30.1-6ubuntu1","1.30.4-5ubuntu1","1.30.4-7ubuntu1"],"ecosystem_specific":{"availability":"No 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required","binaries":[{"binary_name":"libnginx-mod-http-geoip","binary_version":"1.30.4-7ubuntu1.1"},{"binary_version":"1.30.4-7ubuntu1.1","binary_name":"libnginx-mod-http-image-filter"},{"binary_name":"libnginx-mod-http-perl","binary_version":"1.30.4-7ubuntu1.1"},{"binary_name":"libnginx-mod-http-xslt-filter","binary_version":"1.30.4-7ubuntu1.1"},{"binary_name":"libnginx-mod-mail","binary_version":"1.30.4-7ubuntu1.1"},{"binary_version":"1.30.4-7ubuntu1.1","binary_name":"libnginx-mod-stream"},{"binary_version":"1.30.4-7ubuntu1.1","binary_name":"libnginx-mod-stream-geoip"},{"binary_version":"1.30.4-7ubuntu1.1","binary_name":"nginx"},{"binary_version":"1.30.4-7ubuntu1.1","binary_name":"nginx-common"},{"binary_version":"1.30.4-7ubuntu1.1","binary_name":"nginx-core"},{"binary_version":"1.30.4-7ubuntu1.1","binary_name":"nginx-extras"},{"binary_version":"1.30.4-7ubuntu1.1","binary_name":"nginx-full"},{"binary_version":"1.30.4-7ubuntu1.1","binary_name":"nginx-light"}]},"database_specific":{"source":"https://github.com/canonical/ubuntu-security-notices/blob/main/osv/usn/USN-8955-1.json","cves_map":{"ecosystem":"Ubuntu:26.10","cves":[{"id":"CVE-2026-15176","severity":[{"type":"CVSS_V3","score":"CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:H/I:H/A:H"},{"score":"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","type":"CVSS_V4"},{"score":"medium","type":"Ubuntu"}]},{"id":"CVE-2026-93479","severity":[{"score":"CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:H/I:H/A:H","type":"CVSS_V3"},{"type":"CVSS_V4","score":"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"},{"score":"medium","type":"Ubuntu"}]},{"severity":[{"score":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:L/A:N","type":"CVSS_V3"},{"type":"CVSS_V4","score":"CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:N/VI:L/VA:N/SC:N/SI:N/SA:N"},{"score":"medium","type":"Ubuntu"}],"id":"CVE-2026-95101"},{"id":"CVE-2026-97205","severity":[{"score":"CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:H/I:H/A:H","type":"CVSS_V3"},{"type":"CVSS_V4","score":"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"},{"type":"Ubuntu","score":"medium"}]},{"severity":[{"type":"CVSS_V3","score":"CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:H/I:L/A:N"},{"type":"CVSS_V4","score":"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"},{"type":"Ubuntu","score":"medium"}],"id":"CVE-2026-97629"}]}}},{"package":{"name":"nginx","ecosystem":"Ubuntu:26.04:LTS","purl":"pkg:deb/ubuntu/nginx?arch=source&distro=resolute"},"ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"},{"fixed":"1.28.3-2ubuntu1.12"}]}],"versions":["1.28.0-6ubuntu1","1.28.1-2ubuntu1","1.28.1-3ubuntu1","1.28.2-2ubuntu1","1.28.3-2ubuntu1","1.28.3-2ubuntu1.1","1.28.3-2ubuntu1.2","1.28.3-2ubuntu1.3","1.28.3-2ubuntu1.4","1.28.3-2ubuntu1.5","1.28.3-2ubuntu1.6","1.28.3-2ubuntu1.7","1.28.3-2ubuntu1.8","1.28.3-2ubuntu1.9","1.28.3-2ubuntu1.10","1.28.3-2ubuntu1.11"],"ecosystem_specific":{"binaries":[{"binary_name":"libnginx-mod-http-geoip","binary_version":"1.28.3-2ubuntu1.12"},{"binary_version":"1.28.3-2ubuntu1.12","binary_name":"libnginx-mod-http-image-filter"},{"binary_name":"libnginx-mod-http-perl","binary_version":"1.28.3-2ubuntu1.12"},{"binary_name":"libnginx-mod-http-xslt-filter","binary_version":"1.28.3-2ubuntu1.12"},{"binary_name":"libnginx-mod-mail","binary_version":"1.28.3-2ubuntu1.12"},{"binary_name":"libnginx-mod-stream","binary_version":"1.28.3-2ubuntu1.12"},{"binary_version":"1.28.3-2ubuntu1.12","binary_name":"libnginx-mod-stream-geoip"},{"binary_name":"nginx","binary_version":"1.28.3-2ubuntu1.12"},{"binary_version":"1.28.3-2ubuntu1.12","binary_name":"nginx-common"},{"binary_name":"nginx-core","binary_version":"1.28.3-2ubuntu1.12"},{"binary_version":"1.28.3-2ubuntu1.12","binary_name":"nginx-extras"},{"binary_version":"1.28.3-2ubuntu1.12","binary_name":"nginx-full"},{"binary_name":"nginx-light","binary_version":"1.28.3-2ubuntu1.12"}],"availability":"No subscription required"},"database_specific":{"source":"https://github.com/canonical/ubuntu-security-notices/blob/main/osv/usn/USN-8955-1.json","cves_map":{"ecosystem":"Ubuntu:26.04:LTS","cves":[{"id":"CVE-2026-15176","severity":[{"type":"CVSS_V3","score":"CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:H/I:H/A:H"},{"type":"CVSS_V4","score":"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"},{"score":"medium","type":"Ubuntu"}]},{"severity":[{"type":"CVSS_V3","score":"CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:H/I:H/A:H"},{"score":"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","type":"CVSS_V4"},{"score":"medium","type":"Ubuntu"}],"id":"CVE-2026-93479"},{"id":"CVE-2026-95101","severity":[{"type":"CVSS_V3","score":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:L/A:N"},{"score":"CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:N/VI:L/VA:N/SC:N/SI:N/SA:N","type":"CVSS_V4"},{"type":"Ubuntu","score":"medium"}]},{"id":"CVE-2026-97205","severity":[{"score":"CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:H/I:H/A:H","type":"CVSS_V3"},{"type":"CVSS_V4","score":"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"},{"type":"Ubuntu","score":"medium"}]},{"id":"CVE-2026-97629","severity":[{"score":"CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:H/I:L/A:N","type":"CVSS_V3"},{"score":"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","type":"CVSS_V4"},{"type":"Ubuntu","score":"medium"}]}]}}}],"schema_version":"1.9.0"}