{"id":"USN-8458-1","summary":"nginx vulnerabilities","details":"It was discovered that nginx incorrectly handled large headers when\nproxying HTTP/2 traffic. A remote attacker could use this issue to cause\nnginx to crash, resulting in a denial of service, or possibly execute\narbitrary code. The default compiler options for affected releases should\nreduce the vulnerability to a denial of service. (CVE-2026-42055)\n\nIt was discovered that nginx incorrectly handled character set conversion\nunder certain circumstances. A remote attacker could possibly use this\nissue to obtain sensitive information or cause nginx to crash, resulting in\na denial of service. (CVE-2026-48142)","modified":"2026-06-30T18:17:35.447433444Z","published":"2026-06-22T13:28:02Z","related":["UBUNTU-CVE-2026-42055","UBUNTU-CVE-2026-48142"],"upstream":["UBUNTU-CVE-2026-42055","UBUNTU-CVE-2026-48142"],"references":[{"type":"ADVISORY","url":"https://ubuntu.com/security/notices/USN-8458-1"},{"type":"REPORT","url":"https://ubuntu.com/security/CVE-2026-42055"},{"type":"REPORT","url":"https://ubuntu.com/security/CVE-2026-48142"}],"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":"1.18.0-6ubuntu14.16"}]}],"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"],"ecosystem_specific":{"availability":"No 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required","binaries":[{"binary_version":"1.18.0-6ubuntu14.16","binary_name":"libnginx-mod-http-auth-pam"},{"binary_name":"libnginx-mod-http-cache-purge","binary_version":"1.18.0-6ubuntu14.16"},{"binary_name":"libnginx-mod-http-dav-ext","binary_version":"1.18.0-6ubuntu14.16"},{"binary_name":"libnginx-mod-http-echo","binary_version":"1.18.0-6ubuntu14.16"},{"binary_version":"1.18.0-6ubuntu14.16","binary_name":"libnginx-mod-http-fancyindex"},{"binary_name":"libnginx-mod-http-geoip","binary_version":"1.18.0-6ubuntu14.16"},{"binary_name":"libnginx-mod-http-geoip2","binary_version":"1.18.0-6ubuntu14.16"},{"binary_name":"libnginx-mod-http-headers-more-filter","binary_version":"1.18.0-6ubuntu14.16"},{"binary_name":"libnginx-mod-http-image-filter","binary_version":"1.18.0-6ubuntu14.16"},{"binary_name":"libnginx-mod-http-ndk","binary_version":"1.18.0-6ubuntu14.16"},{"binary_name":"libnginx-mod-http-perl","binary_version":"1.18.0-6ubuntu14.16"},{"binary_name":"libnginx-mod-http-subs-filter","binary_version":"1.18.0-6ubuntu14.16"},{"binary_version":"1.18.0-6ubuntu14.16","binary_name":"libnginx-mod-http-uploadprogress"},{"binary_name":"libnginx-mod-http-upstream-fair","binary_version":"1.18.0-6ubuntu14.16"},{"binary_version":"1.18.0-6ubuntu14.16","binary_name":"libnginx-mod-http-xslt-filter"},{"binary_version":"1.18.0-6ubuntu14.16","binary_name":"libnginx-mod-mail"},{"binary_version":"1.18.0-6ubuntu14.16","binary_name":"libnginx-mod-nchan"},{"binary_name":"libnginx-mod-rtmp","binary_version":"1.18.0-6ubuntu14.16"},{"binary_name":"libnginx-mod-stream","binary_version":"1.18.0-6ubuntu14.16"},{"binary_name":"libnginx-mod-stream-geoip","binary_version":"1.18.0-6ubuntu14.16"},{"binary_name":"libnginx-mod-stream-geoip2","binary_version":"1.18.0-6ubuntu14.16"},{"binary_name":"nginx","binary_version":"1.18.0-6ubuntu14.16"},{"binary_version":"1.18.0-6ubuntu14.16","binary_name":"nginx-common"},{"binary_version":"1.18.0-6ubuntu14.16","binary_name":"nginx-core"},{"binary_name":"nginx-extras","binary_version":"1.18.0-6ubuntu14.16"},{"binary_name":"nginx-full","binary_version":"1.18.0-6ubuntu14.16"},{"binary_version":"1.18.0-6ubuntu14.16","binary_name":"nginx-light"}]},"database_specific":{"cves_map":{"ecosystem":"Ubuntu:22.04:LTS","cves":[{"id":"CVE-2026-42055","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_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:P/PR:N/UI:N/VC:H/VI:H/VA:H/SC:N/SI:N/SA:N"},{"type":"Ubuntu","score":"medium"}]},{"id":"CVE-2026-48142","severity":[{"score":"CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:L/I:N/A:L","type":"CVSS_V3"},{"type":"CVSS_V4","score":"CVSS:4.0/AV:N/AC:H/AT:N/PR:N/UI:N/VC:L/VI:N/VA:L/SC:N/SI:N/SA:N"},{"score":"medium","type":"Ubuntu"}]}]},"source":"https://github.com/canonical/ubuntu-security-notices/blob/main/osv/usn/USN-8458-1.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":"1.24.0-2ubuntu7.13"}]}],"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"],"ecosystem_specific":{"binaries":[{"binary_version":"1.24.0-2ubuntu7.13","binary_name":"libnginx-mod-http-geoip"},{"binary_name":"libnginx-mod-http-image-filter","binary_version":"1.24.0-2ubuntu7.13"},{"binary_name":"libnginx-mod-http-perl","binary_version":"1.24.0-2ubuntu7.13"},{"binary_name":"libnginx-mod-http-xslt-filter","binary_version":"1.24.0-2ubuntu7.13"},{"binary_name":"libnginx-mod-mail","binary_version":"1.24.0-2ubuntu7.13"},{"binary_name":"libnginx-mod-stream","binary_version":"1.24.0-2ubuntu7.13"},{"binary_name":"libnginx-mod-stream-geoip","binary_version":"1.24.0-2ubuntu7.13"},{"binary_name":"nginx","binary_version":"1.24.0-2ubuntu7.13"},{"binary_name":"nginx-common","binary_version":"1.24.0-2ubuntu7.13"},{"binary_version":"1.24.0-2ubuntu7.13","binary_name":"nginx-core"},{"binary_name":"nginx-extras","binary_version":"1.24.0-2ubuntu7.13"},{"binary_name":"nginx-full","binary_version":"1.24.0-2ubuntu7.13"},{"binary_name":"nginx-light","binary_version":"1.24.0-2ubuntu7.13"}],"availability":"No 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