{"id":"USN-8956-1","summary":"brotli vulnerability","details":"It was discovered that Brotli incorrectly handled certain compressed\nstreams. A remote attacker could possibly use this issue to cause a\ndenial of service or execute arbitrary code.","modified":"2026-10-27T04:17:20.624327984Z","published":"2026-10-26T15:54:30Z","related":["UBUNTU-CVE-2026-111497"],"upstream":["CVE-2026-111497","UBUNTU-CVE-2026-111497"],"references":[{"type":"ADVISORY","url":"https://ubuntu.com/security/notices/USN-8956-1"},{"type":"REPORT","url":"https://ubuntu.com/security/CVE-2026-111497"}],"affected":[{"package":{"name":"brotli","ecosystem":"Ubuntu:22.04:LTS","purl":"pkg:deb/ubuntu/brotli?arch=source&distro=jammy"},"ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"},{"fixed":"1.0.9-2ubuntu0.1"}]}],"versions":["1.0.9-2build3","1.0.9-2build4","1.0.9-2build5","1.0.9-2build6"],"ecosystem_specific":{"binaries":[{"binary_version":"1.0.9-2ubuntu0.1","binary_name":"brotli"},{"binary_name":"libbrotli1","binary_version":"1.0.9-2ubuntu0.1"},{"binary_name":"python3-brotli","binary_version":"1.0.9-2ubuntu0.1"}],"availability":"No subscription required"},"database_specific":{"cves_map":{"ecosystem":"Ubuntu:22.04:LTS","cves":[{"id":"CVE-2026-111497","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":"medium"}]}]},"source":"https://github.com/canonical/ubuntu-security-notices/blob/main/osv/usn/USN-8956-1.json"}},{"package":{"name":"brotli","ecosystem":"Ubuntu:24.04:LTS","purl":"pkg:deb/ubuntu/brotli?arch=source&distro=noble"},"ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"},{"fixed":"1.1.0-2ubuntu0.1"}]}],"versions":["1.0.9-2build8","1.1.0-1","1.1.0-2~build1","1.1.0-2","1.1.0-2build1","1.1.0-2build2"],"ecosystem_specific":{"binaries":[{"binary_name":"brotli","binary_version":"1.1.0-2ubuntu0.1"},{"binary_version":"1.1.0-2ubuntu0.1","binary_name":"libbrotli1"},{"binary_version":"1.1.0-2ubuntu0.1","binary_name":"python3-brotli"}],"availability":"No subscription required"},"database_specific":{"cves_map":{"ecosystem":"Ubuntu:24.04:LTS","cves":[{"id":"CVE-2026-111497","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":"medium","type":"Ubuntu"}]}]},"source":"https://github.com/canonical/ubuntu-security-notices/blob/main/osv/usn/USN-8956-1.json"}},{"package":{"name":"brotli","ecosystem":"Ubuntu:26.10","purl":"pkg:deb/ubuntu/brotli?arch=source&distro=stonking"},"ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"},{"fixed":"1.2.0-4ubuntu0.1"}]}],"versions":["1.2.0-3build1","1.2.0-4"],"ecosystem_specific":{"availability":"No subscription required","binaries":[{"binary_version":"1.2.0-4ubuntu0.1","binary_name":"brotli"},{"binary_name":"libbrotli1","binary_version":"1.2.0-4ubuntu0.1"},{"binary_name":"python3-brotli","binary_version":"1.2.0-4ubuntu0.1"}]},"database_specific":{"cves_map":{"ecosystem":"Ubuntu:26.10","cves":[{"id":"CVE-2026-111497","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":"medium"}]}]},"source":"https://github.com/canonical/ubuntu-security-notices/blob/main/osv/usn/USN-8956-1.json"}},{"package":{"name":"brotli","ecosystem":"Ubuntu:26.04:LTS","purl":"pkg:deb/ubuntu/brotli?arch=source&distro=resolute"},"ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"},{"fixed":"1.2.0-3ubuntu0.1"}]}],"versions":["1.1.0-2build5","1.1.0-2build6","1.2.0-3","1.2.0-3build1"],"ecosystem_specific":{"binaries":[{"binary_version":"1.2.0-3ubuntu0.1","binary_name":"brotli"},{"binary_name":"libbrotli1","binary_version":"1.2.0-3ubuntu0.1"},{"binary_version":"1.2.0-3ubuntu0.1","binary_name":"python3-brotli"}],"availability":"No subscription required"},"database_specific":{"cves_map":{"cves":[{"id":"CVE-2026-111497","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":"medium"}]}],"ecosystem":"Ubuntu:26.04:LTS"},"source":"https://github.com/canonical/ubuntu-security-notices/blob/main/osv/usn/USN-8956-1.json"}}],"schema_version":"1.9.2"}