{"id":"UBUNTU-CVE-2026-82820","details":"A vulnerability was found in FLVMeta up to 1.2.2. Affected is the function amf_string_new of the file src/amf.c of the component AMF String Processing. The manipulation of the argument length results in heap-based buffer overflow. The attack can be launched remotely. The exploit has been made public and could be used. The patch is identified as f412a33b9a84c2d1a9dee145a868feddbf64879e. A patch should be applied to remediate this issue. The project maintainer doubts the security impact: \"While I acknowledged the bugs and provided fixes, I have yet to see any way to exploit these alleged vulnerabilities.\"","modified":"2026-09-02T16:28:28Z","published":"2026-08-31T19:17:00Z","upstream":["CVE-2026-82820"],"references":[{"type":"REPORT","url":"https://ubuntu.com/security/CVE-2026-82820"},{"type":"REPORT","url":"https://www.cve.org/CVERecord?id=CVE-2026-82820"},{"type":"REPORT","url":"https://github.com/noirotm/flvmeta/issues/27"},{"type":"REPORT","url":"https://github.com/noirotm/flvmeta/commit/f412a33b9a84c2d1a9dee145a868feddbf64879e"},{"type":"REPORT","url":"https://github.com/raind20001020/Poc/blob/main/flvmeta_heap_buffer_overflow"},{"type":"REPORT","url":"https://vuldb.com/cve/CVE-2026-82820"},{"type":"REPORT","url":"https://vuldb.com/submit/876596"},{"type":"REPORT","url":"https://vuldb.com/vuln/397243"},{"type":"REPORT","url":"https://vuldb.com/vuln/397243/cti"}],"affected":[{"package":{"name":"flvmeta","ecosystem":"Ubuntu:16.04:LTS","purl":"pkg:deb/ubuntu/flvmeta?arch=source&distro=xenial"},"ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"}]}],"versions":["1.1.2-1"],"ecosystem_specific":{"binaries":[{"binary_name":"flvmeta","binary_version":"1.1.2-1"}]},"database_specific":{"source":"https://github.com/canonical/ubuntu-security-notices/blob/main/osv/cve/2026/UBUNTU-CVE-2026-82820.json"}},{"package":{"name":"flvmeta","ecosystem":"Ubuntu:18.04:LTS","purl":"pkg:deb/ubuntu/flvmeta?arch=source&distro=bionic"},"ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"}]}],"versions":["1.2.1-1"],"ecosystem_specific":{"binaries":[{"binary_name":"flvmeta","binary_version":"1.2.1-1"}]},"database_specific":{"source":"https://github.com/canonical/ubuntu-security-notices/blob/main/osv/cve/2026/UBUNTU-CVE-2026-82820.json"}},{"package":{"name":"flvmeta","ecosystem":"Ubuntu:20.04:LTS","purl":"pkg:deb/ubuntu/flvmeta?arch=source&distro=focal"},"ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"}]}],"versions":["1.2.1-1"],"ecosystem_specific":{"binaries":[{"binary_name":"flvmeta","binary_version":"1.2.1-1"}]},"database_specific":{"source":"https://github.com/canonical/ubuntu-security-notices/blob/main/osv/cve/2026/UBUNTU-CVE-2026-82820.json"}},{"package":{"name":"flvmeta","ecosystem":"Ubuntu:22.04:LTS","purl":"pkg:deb/ubuntu/flvmeta?arch=source&distro=jammy"},"ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"}]}],"versions":["1.2.1-1"],"ecosystem_specific":{"binaries":[{"binary_name":"flvmeta","binary_version":"1.2.1-1"}]},"database_specific":{"source":"https://github.com/canonical/ubuntu-security-notices/blob/main/osv/cve/2026/UBUNTU-CVE-2026-82820.json"}},{"package":{"name":"flvmeta","ecosystem":"Ubuntu:24.04:LTS","purl":"pkg:deb/ubuntu/flvmeta?arch=source&distro=noble"},"ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"}]}],"versions":["1.2.1-1","1.2.1-1build1"],"ecosystem_specific":{"binaries":[{"binary_name":"flvmeta","binary_version":"1.2.1-1build1"}]},"database_specific":{"source":"https://github.com/canonical/ubuntu-security-notices/blob/main/osv/cve/2026/UBUNTU-CVE-2026-82820.json"}},{"package":{"name":"flvmeta","ecosystem":"Ubuntu:26.04:LTS","purl":"pkg:deb/ubuntu/flvmeta?arch=source&distro=resolute"},"ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"}]}],"versions":["1.2.2-1","1.2.2-1build1","1.2.2-2"],"ecosystem_specific":{"binaries":[{"binary_name":"flvmeta","binary_version":"1.2.2-2"}]},"database_specific":{"source":"https://github.com/canonical/ubuntu-security-notices/blob/main/osv/cve/2026/UBUNTU-CVE-2026-82820.json"}}],"schema_version":"1.9.0","severity":[{"type":"CVSS_V3","score":"CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:N/I:N/A:L"},{"type":"CVSS_V4","score":"CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:P/VC:N/VI:N/VA:L/SC:N/SI:N/SA:N/E:P"},{"type":"Ubuntu","score":"medium"}]}