{"id":"CVE-2026-104266","summary":"tinytag: Infinite loop when parsing certain M4A files containing invalid atoms","details":"tinytag is a Python library for reading audio file metadata. From 2.0.0 until 2.3.0, an M4A file containing a sub-atom with a size of zero inside a ---- atom can cause the metadata parser to stop advancing through the input. The custom-field atom traversal repeatedly processes the malformed location, causing an infinite loop and denying service to a program that reads the crafted file. This issue is fixed in version 2.3.0.","aliases":["GHSA-24cc-9352-h2pg"],"modified":"2026-10-16T02:47:37.378008841Z","published":"2026-10-15T17:13:26.636Z","database_specific":{"cwe_ids":["CWE-835"],"osv_generated_from":"https://github.com/CVEProject/cvelistV5/tree/main/cves/2026/104xxx/CVE-2026-104266.json","cna_assigner":"GitHub_M"},"references":[{"type":"ADVISORY","url":"https://github.com/CVEProject/cvelistV5/tree/main/cves/2026/104xxx/CVE-2026-104266.json"},{"type":"FIX","url":"https://github.com/tinytag/tinytag/commit/9ada221ba44990cb02cd9002d992186e037b515e"},{"type":"FIX","url":"https://github.com/tinytag/tinytag/pull/326"},{"type":"WEB","url":"https://github.com/tinytag/tinytag/releases/tag/2.3.0"},{"type":"ADVISORY","url":"https://github.com/tinytag/tinytag/security/advisories/GHSA-24cc-9352-h2pg"},{"type":"ADVISORY","url":"https://nvd.nist.gov/vuln/detail/CVE-2026-104266"}],"affected":[{"ranges":[{"type":"GIT","repo":"https://github.com/tinytag/tinytag","events":[{"introduced":"cc786892205f321a139412f830d714432b830f2f"},{"fixed":"912d27f5f65d6d1cc44ef6a9797d0d6d9e9d6b7d"}],"database_specific":{"extracted_events":[{"introduced":"2.0.0"},{"fixed":"2.3.0"}],"source":"AFFECTED_FIELD"}}],"versions":["2.2.1","2.2.0","2.1.2","2.1.1","2.1.0","2.0.0"],"database_specific":{"source":"https://storage.googleapis.com/cve-osv-conversion/osv-output/CVE-2026-104266.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:H"}]}