{"id":"UBUNTU-CVE-2026-111497","details":"A buffer overflow vulnerability in the Brotli decoder (c/dec/decode.c) in Google Brotli versions 1.0.3 through 1.2.0 on all platforms allows a remote unauthenticated attacker to corrupt adjacent decoder state memory, disclose sensitive memory contents, cause a denial of service, or potentially execute arbitrary code using a crafted Brotli-compressed stream. Users need to update any Brotli libraries or binaries between 1.0.3 through 1.2.0 to the latest available version: 1.0.10 or 1.1.1 or 1.2.1.","modified":"2026-10-27T04:17:33.832174691Z","published":"2026-10-23T00:00:00Z","related":["USN-8956-1"],"upstream":["CVE-2026-111497"],"references":[{"type":"REPORT","url":"https://ubuntu.com/security/CVE-2026-111497"},{"type":"REPORT","url":"https://www.cve.org/CVERecord?id=CVE-2026-111497"},{"type":"REPORT","url":"https://nodejs.org/en/blog/vulnerability/october-2026-security-releases#nodejs-brotli-decoder-out-of-bounds-write-permits-remote-code-execution-cve-2026-111497---high"},{"type":"ADVISORY","url":"https://ubuntu.com/security/notices/USN-8956-1"}],"affected":[{"package":{"name":"brotli","ecosystem":"Ubuntu:16.04:LTS","purl":"pkg:deb/ubuntu/brotli?arch=source&distro=xenial"},"ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"}]}],"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":{"binaries":[{"binary_name":"brotli","binary_version":"1.0.3-1ubuntu1~16.04.2"},{"binary_name":"libbrotli1","binary_version":"1.0.3-1ubuntu1~16.04.2"},{"binary_version":"1.0.3-1ubuntu1~16.04.2","binary_name":"python-brotli"},{"binary_name":"python3-brotli","binary_version":"1.0.3-1ubuntu1~16.04.2"}]},"database_specific":{"source":"https://github.com/canonical/ubuntu-security-notices/blob/main/osv/cve/2026/UBUNTU-CVE-2026-111497.json"}},{"package":{"name":"brotli","ecosystem":"Ubuntu:18.04:LTS","purl":"pkg:deb/ubuntu/brotli?arch=source&distro=bionic"},"ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"}]}],"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"},{"binary_name":"libbrotli1","binary_version":"1.0.3-1ubuntu1.3"},{"binary_version":"1.0.3-1ubuntu1.3","binary_name":"python-brotli"},{"binary_name":"python3-brotli","binary_version":"1.0.3-1ubuntu1.3"}]},"database_specific":{"source":"https://github.com/canonical/ubuntu-security-notices/blob/main/osv/cve/2026/UBUNTU-CVE-2026-111497.json"}},{"package":{"name":"brotli","ecosystem":"Ubuntu:20.04:LTS","purl":"pkg:deb/ubuntu/brotli?arch=source&distro=focal"},"ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"}]}],"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":{"binaries":[{"binary_name":"brotli","binary_version":"1.0.7-6ubuntu0.1"},{"binary_name":"libbrotli1","binary_version":"1.0.7-6ubuntu0.1"},{"binary_version":"1.0.7-6ubuntu0.1","binary_name":"python3-brotli"}]},"database_specific":{"source":"https://github.com/canonical/ubuntu-security-notices/blob/main/osv/cve/2026/UBUNTU-CVE-2026-111497.json"}},{"package":{"name":"nodejs","ecosystem":"Ubuntu:Pro:20.04:LTS","purl":"pkg:deb/ubuntu/nodejs?arch=source&distro=esm-apps%2Ffocal"},"ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"}]}],"versions":["10.15.2~dfsg-2ubuntu1","10.17.0~dfsg-2ubuntu4","10.17.0~dfsg-2ubuntu6","10.19.0~dfsg-3ubuntu1","10.19.0~dfsg-3ubuntu1.1","10.19.0~dfsg-3ubuntu1.2","10.19.0~dfsg-3ubuntu1.3","10.19.0~dfsg-3ubuntu1.5","10.19.0~dfsg-3ubuntu1.6","10.19.0~dfsg-3ubuntu1.6+esm2"],"ecosystem_specific":{"binaries":[{"binary_name":"libnode64","binary_version":"10.19.0~dfsg-3ubuntu1.6+esm2"},{"binary_version":"10.19.0~dfsg-3ubuntu1.6+esm2","binary_name":"nodejs"}]},"database_specific":{"source":"https://github.com/canonical/ubuntu-security-notices/blob/main/osv/cve/2026/UBUNTU-CVE-2026-111497.json"}},{"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":{"availability":"No 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