{"id":"USN-8956-2","summary":"brotli vulnerability","details":"USN-8956-1 fixed a vulnerability in Brotli. This update provides the\ncorresponding fixes for Ubuntu 16.04 LTS, Ubuntu 18.04 LTS, and\nUbuntu 20.04 LTS.\n\nOriginal advisory details:\n\n It was discovered that Brotli incorrectly handled certain compressed\n streams. A remote attacker could possibly use this issue to cause a\n denial of service or execute arbitrary code.","modified":"2026-10-29T02:43:13.012635347Z","published":"2026-10-27T21:14:45Z","related":["UBUNTU-CVE-2026-111497"],"upstream":["CVE-2026-111497","UBUNTU-CVE-2026-111497"],"references":[{"type":"ADVISORY","url":"https://ubuntu.com/security/notices/USN-8956-2"},{"type":"REPORT","url":"https://ubuntu.com/security/CVE-2026-111497"}],"affected":[{"package":{"name":"brotli","ecosystem":"Ubuntu:Pro:16.04:LTS","purl":"pkg:deb/ubuntu/brotli?arch=source&distro=esm-infra-legacy%2Fxenial"},"ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"},{"fixed":"1.0.3-1ubuntu1~16.04.2+esm1"}]}],"versions":["0.2.0+dfsg-1","0.3.0+dfsg-1","0.3.0+dfsg-2","0.3.0+dfsg-2ubuntu1","1.0.3-1ubuntu1~16.04.1","1.0.3-1ubuntu1~16.04.2"],"ecosystem_specific":{"availability":"Available with Ubuntu Pro with Legacy support add-on: https://ubuntu.com/pro","binaries":[{"binary_name":"brotli","binary_version":"1.0.3-1ubuntu1~16.04.2+esm1"},{"binary_name":"libbrotli1","binary_version":"1.0.3-1ubuntu1~16.04.2+esm1"},{"binary_version":"1.0.3-1ubuntu1~16.04.2+esm1","binary_name":"python-brotli"},{"binary_name":"python3-brotli","binary_version":"1.0.3-1ubuntu1~16.04.2+esm1"}]},"database_specific":{"cves_map":{"ecosystem":"Ubuntu:Pro:16.04:LTS","cves":[{"severity":[{"type":"CVSS_V4","score":"CVSS:4.0/AV:N/AC:L/AT:P/PR:N/UI:N/VC:H/VI:H/VA:H/SC:N/SI:N/SA:N"},{"type":"Ubuntu","score":"high"}],"id":"CVE-2026-111497"}]},"source":"https://github.com/canonical/ubuntu-security-notices/blob/main/osv/usn/USN-8956-2.json"}},{"package":{"name":"brotli","ecosystem":"Ubuntu:Pro:18.04:LTS","purl":"pkg:deb/ubuntu/brotli?arch=source&distro=esm-infra%2Fbionic"},"ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"},{"fixed":"1.0.3-1ubuntu1.3+esm1"}]}],"versions":["0.6.0-1build1","1.0.2-2","1.0.2-3","1.0.3-1ubuntu1","1.0.3-1ubuntu1.2","1.0.3-1ubuntu1.3"],"ecosystem_specific":{"binaries":[{"binary_name":"brotli","binary_version":"1.0.3-1ubuntu1.3+esm1"},{"binary_version":"1.0.3-1ubuntu1.3+esm1","binary_name":"libbrotli1"},{"binary_version":"1.0.3-1ubuntu1.3+esm1","binary_name":"python-brotli"},{"binary_name":"python3-brotli","binary_version":"1.0.3-1ubuntu1.3+esm1"}],"availability":"Available with Ubuntu Pro (Infra-only): https://ubuntu.com/pro"},"database_specific":{"cves_map":{"cves":[{"severity":[{"score":"CVSS:4.0/AV:N/AC:L/AT:P/PR:N/UI:N/VC:H/VI:H/VA:H/SC:N/SI:N/SA:N","type":"CVSS_V4"},{"score":"high","type":"Ubuntu"}],"id":"CVE-2026-111497"}],"ecosystem":"Ubuntu:Pro:18.04:LTS"},"source":"https://github.com/canonical/ubuntu-security-notices/blob/main/osv/usn/USN-8956-2.json"}},{"package":{"name":"brotli","ecosystem":"Ubuntu:Pro:20.04:LTS","purl":"pkg:deb/ubuntu/brotli?arch=source&distro=esm-infra%2Ffocal"},"ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"},{"fixed":"1.0.7-6ubuntu0.1+esm1"}]}],"versions":["1.0.7-2","1.0.7-2build1","1.0.7-4","1.0.7-5","1.0.7-6","1.0.7-6build1","1.0.7-6ubuntu0.1"],"ecosystem_specific":{"availability":"Available with Ubuntu Pro (Infra-only): https://ubuntu.com/pro","binaries":[{"binary_name":"brotli","binary_version":"1.0.7-6ubuntu0.1+esm1"},{"binary_version":"1.0.7-6ubuntu0.1+esm1","binary_name":"libbrotli1"},{"binary_name":"python3-brotli","binary_version":"1.0.7-6ubuntu0.1+esm1"}]},"database_specific":{"cves_map":{"ecosystem":"Ubuntu:Pro:20.04:LTS","cves":[{"severity":[{"score":"CVSS:4.0/AV:N/AC:L/AT:P/PR:N/UI:N/VC:H/VI:H/VA:H/SC:N/SI:N/SA:N","type":"CVSS_V4"},{"type":"Ubuntu","score":"high"}],"id":"CVE-2026-111497"}]},"source":"https://github.com/canonical/ubuntu-security-notices/blob/main/osv/usn/USN-8956-2.json"}}],"schema_version":"1.9.2"}