{"id":"USN-8931-1","summary":"apache2 vulnerabilities","details":"이지웅 discovered that Apache HTTP Server exposed WebDAV property information.\nA remote attacker could possibly use this issue to obtain sensitive\ninformation. (CVE-2026-58415)\n\nZhen Kong and Charles Vosburgh discovered that Apache HTTP Server did not\nproperly validate FTP server responses. A remote attacker could possibly\nuse this issue to make a forward proxy connect to an arbitrary host.\n(CVE-2026-63045)\n\nHyojae Lee and Zhen Kong discovered that Apache HTTP Server incorrectly\nhandled certain HTTP requests. A remote attacker could possibly use this\nissue to cause a denial of service or execute arbitrary code.\n(CVE-2026-63292)\n\nLucian Nitescu and Zhen Kong discovered that Apache HTTP Server did not\nproperly handle certain responses from backend servers. A remote attacker\ncould possibly use this issue to cause a denial of service.\n(CVE-2026-63686)\n\nQing Xu discovered that Apache HTTP Server incorrectly interpreted HTTP\nresponses from backend servers. A remote attacker could possibly use this\nissue to perform HTTP response smuggling attacks. This issue only affected\nUbuntu 20.04 LTS, Ubuntu 22.04 LTS, Ubuntu 24.04 LTS, and Ubuntu 26.04 LTS.\n(CVE-2026-63718)\n\nHyojae Lee discovered that Apache HTTP Server did not properly validate\nDigest authentication requests. A machine-in-the-middle attacker could\npossibly use this issue to bypass authentication. (CVE-2026-73636)\n\nZhen Kong and Darren Carreras discovered that Apache HTTP Server did not\nproperly manage authentication requests. A remote attacker could possibly\nuse this issue to cause a denial of service. (CVE-2026-73637)\n\nVlatko Kosturjak discovered that Apache HTTP Server did not properly\nenforce access restrictions for user directories. A remote attacker could\npossibly use this issue to obtain sensitive information. (CVE-2026-79768)\n\nZhen Kong discovered that Apache HTTP Server did not properly handle\ncertain WebDAV requests. An authenticated user could possibly use this\nissue to cause a denial of service or corrupt WebDAV property data.\n(CVE-2026-93546)","modified":"2026-10-17T13:11:54.285811986Z","published":"2026-10-14T18:21:58Z","related":["UBUNTU-CVE-2026-58415","UBUNTU-CVE-2026-63045","UBUNTU-CVE-2026-63292","UBUNTU-CVE-2026-63686","UBUNTU-CVE-2026-63718","UBUNTU-CVE-2026-73636","UBUNTU-CVE-2026-73637","UBUNTU-CVE-2026-79768","UBUNTU-CVE-2026-93546"],"upstream":["CVE-2026-58415","CVE-2026-63045","CVE-2026-63292","CVE-2026-63686","CVE-2026-63718","CVE-2026-73636","CVE-2026-73637","CVE-2026-79768","CVE-2026-93546","UBUNTU-CVE-2026-58415","UBUNTU-CVE-2026-63045","UBUNTU-CVE-2026-63292","UBUNTU-CVE-2026-63686","UBUNTU-CVE-2026-63718","UBUNTU-CVE-2026-73636","UBUNTU-CVE-2026-73637","UBUNTU-CVE-2026-79768","UBUNTU-CVE-2026-93546"],"references":[{"type":"ADVISORY","url":"https://ubuntu.com/security/notices/USN-8931-1"},{"type":"REPORT","url":"https://ubuntu.com/security/CVE-2026-58415"},{"type":"REPORT","url":"https://ubuntu.com/security/CVE-2026-63045"},{"type":"REPORT","url":"https://ubuntu.com/security/CVE-2026-63292"},{"type":"REPORT","url":"https://ubuntu.com/security/CVE-2026-63686"},{"type":"REPORT","url":"https://ubuntu.com/security/CVE-2026-63718"},{"type":"REPORT","url":"https://ubuntu.com/security/CVE-2026-73636"},{"type":"REPORT","url":"https://ubuntu.com/security/CVE-2026-73637"},{"type":"REPORT","url":"https://ubuntu.com/security/CVE-2026-79768"},{"type":"REPORT","url":"https://ubuntu.com/security/CVE-2026-93546"}],"affected":[{"package":{"name":"apache2","ecosystem":"Ubuntu:Pro:14.04:LTS","purl":"pkg:deb/ubuntu/apache2?arch=source&distro=esm-infra-legacy%2Ftrusty"},"ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"},{"fixed":"2.4.7-1ubuntu4.22+esm17"}]}],"versions":["2.4.6-2ubuntu2","2.4.6-2ubuntu3","2.4.6-2ubuntu4","2.4.7-1ubuntu1","2.4.7-1ubuntu2","2.4.7-1ubuntu3","2.4.7-1ubuntu4","2.4.7-1ubuntu4.1","2.4.7-1ubuntu4.4","2.4.7-1ubuntu4.5","2.4.7-1ubuntu4.6","2.4.7-1ubuntu4.7","2.4.7-1ubuntu4.8","2.4.7-1ubuntu4.9","2.4.7-1ubuntu4.10","2.4.7-1ubuntu4.11","2.4.7-1ubuntu4.13","2.4.7-1ubuntu4.15","2.4.7-1ubuntu4.16","2.4.7-1ubuntu4.17","2.4.7-1ubuntu4.18","2.4.7-1ubuntu4.19","2.4.7-1ubuntu4.20","2.4.7-1ubuntu4.21","2.4.7-1ubuntu4.22","2.4.7-1ubuntu4.22+esm1","2.4.7-1ubuntu4.22+esm2","2.4.7-1ubuntu4.22+esm3","2.4.7-1ubuntu4.22+esm4","2.4.7-1ubuntu4.22+esm5","2.4.7-1ubuntu4.22+esm6","2.4.7-1ubuntu4.22+esm8","2.4.7-1ubuntu4.22+esm9","2.4.7-1ubuntu4.22+esm10","2.4.7-1ubuntu4.22+esm12","2.4.7-1ubuntu4.22+esm13","2.4.7-1ubuntu4.22+esm14","2.4.7-1ubuntu4.22+esm15","2.4.7-1ubuntu4.22+esm16"],"ecosystem_specific":{"availability":"Available 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https://ubuntu.com/pro","binaries":[{"binary_name":"apache2","binary_version":"2.4.18-2ubuntu3.17+esm22"},{"binary_name":"apache2-bin","binary_version":"2.4.18-2ubuntu3.17+esm22"},{"binary_version":"2.4.18-2ubuntu3.17+esm22","binary_name":"apache2-data"},{"binary_name":"apache2-suexec-custom","binary_version":"2.4.18-2ubuntu3.17+esm22"},{"binary_name":"apache2-suexec-pristine","binary_version":"2.4.18-2ubuntu3.17+esm22"},{"binary_name":"apache2-utils","binary_version":"2.4.18-2ubuntu3.17+esm22"}]},"database_specific":{"cves_map":{"cves":[{"severity":[{"type":"CVSS_V3","score":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:N/A:N"},{"type":"Ubuntu","score":"medium"}],"id":"CVE-2026-58415"},{"id":"CVE-2026-63045","severity":[{"type":"CVSS_V3","score":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:N"},{"type":"Ubuntu","score":"medium"}]},{"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":"Ubuntu","score":"medium"}],"id":"CVE-2026-63292"},{"id":"CVE-2026-63686","severity":[{"score":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H","type":"CVSS_V3"},{"type":"Ubuntu","score":"medium"}]},{"id":"CVE-2026-73636","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":"medium","type":"Ubuntu"}]},{"id":"CVE-2026-73637","severity":[{"type":"CVSS_V3","score":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:L/A:L"},{"type":"Ubuntu","score":"medium"}]},{"severity":[{"score":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:N/A:N","type":"CVSS_V3"},{"score":"medium","type":"Ubuntu"}],"id":"CVE-2026-79768"},{"id":"CVE-2026-93546","severity":[{"score":"CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H","type":"CVSS_V3"},{"score":"medium","type":"Ubuntu"}]}],"ecosystem":"Ubuntu:Pro:16.04:LTS"},"source":"https://github.com/canonical/ubuntu-security-notices/blob/main/osv/usn/USN-8931-1.json"}},{"package":{"name":"apache2","ecosystem":"Ubuntu:Pro:18.04:LTS","purl":"pkg:deb/ubuntu/apache2?arch=source&distro=esm-infra%2Fbionic"},"ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"},{"fixed":"2.4.29-1ubuntu4.27+esm13"}]}],"versions":["2.4.27-2ubuntu3","2.4.29-1ubuntu1","2.4.29-1ubuntu2","2.4.29-1ubuntu3","2.4.29-1ubuntu4","2.4.29-1ubuntu4.1","2.4.29-1ubuntu4.2","2.4.29-1ubuntu4.3","2.4.29-1ubuntu4.4","2.4.29-1ubuntu4.5","2.4.29-1ubuntu4.6","2.4.29-1ubuntu4.7","2.4.29-1ubuntu4.8","2.4.29-1ubuntu4.10","2.4.29-1ubuntu4.11","2.4.29-1ubuntu4.12","2.4.29-1ubuntu4.13","2.4.29-1ubuntu4.14","2.4.29-1ubuntu4.16","2.4.29-1ubuntu4.17","2.4.29-1ubuntu4.18","2.4.29-1ubuntu4.19","2.4.29-1ubuntu4.20","2.4.29-1ubuntu4.21","2.4.29-1ubuntu4.22","2.4.29-1ubuntu4.23","2.4.29-1ubuntu4.24","2.4.29-1ubuntu4.25","2.4.29-1ubuntu4.26","2.4.29-1ubuntu4.27","2.4.29-1ubuntu4.27+esm1","2.4.29-1ubuntu4.27+esm2","2.4.29-1ubuntu4.27+esm3","2.4.29-1ubuntu4.27+esm4","2.4.29-1ubuntu4.27+esm6","2.4.29-1ubuntu4.27+esm7","2.4.29-1ubuntu4.27+esm8","2.4.29-1ubuntu4.27+esm9","2.4.29-1ubuntu4.27+esm10","2.4.29-1ubuntu4.27+esm11","2.4.29-1ubuntu4.27+esm12"],"ecosystem_specific":{"availability":"Available 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