{"dataType":"CVE_RECORD","dataVersion":"5.2","cveMetadata":{"cveId":"CVE-2026-104266","assignerOrgId":"a0819718-46f1-4df5-94e2-005712e83aaa","state":"PUBLISHED","assignerShortName":"GitHub_M","dateReserved":"2026-10-01T19:04:39.707Z","datePublished":"2026-10-15T17:13:26.636Z","dateUpdated":"2026-10-21T01:00:05.989Z"},"containers":{"cna":{"title":"tinytag: Infinite loop when parsing certain M4A files containing invalid atoms","problemTypes":[{"descriptions":[{"cweId":"CWE-835","lang":"en","description":"CWE-835: Loop with Unreachable Exit Condition ('Infinite Loop')","type":"CWE"}]}],"metrics":[{"cvssV3_1":{"attackComplexity":"LOW","attackVector":"NETWORK","availabilityImpact":"HIGH","baseScore":6.5,"baseSeverity":"MEDIUM","confidentialityImpact":"NONE","integrityImpact":"NONE","privilegesRequired":"NONE","scope":"UNCHANGED","userInteraction":"REQUIRED","vectorString":"CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:N/I:N/A:H","version":"3.1"}}],"references":[{"name":"https://github.com/tinytag/tinytag/security/advisories/GHSA-24cc-9352-h2pg","tags":["x_refsource_CONFIRM"],"url":"https://github.com/tinytag/tinytag/security/advisories/GHSA-24cc-9352-h2pg"},{"name":"https://github.com/tinytag/tinytag/pull/326","tags":["x_refsource_MISC"],"url":"https://github.com/tinytag/tinytag/pull/326"},{"name":"https://github.com/tinytag/tinytag/commit/9ada221ba44990cb02cd9002d992186e037b515e","tags":["x_refsource_MISC"],"url":"https://github.com/tinytag/tinytag/commit/9ada221ba44990cb02cd9002d992186e037b515e"},{"name":"https://github.com/tinytag/tinytag/releases/tag/2.3.0","tags":["x_refsource_MISC"],"url":"https://github.com/tinytag/tinytag/releases/tag/2.3.0"}],"affected":[{"vendor":"tinytag","product":"tinytag","versions":[{"version":">= 2.0.0, < 2.3.0","status":"affected"}]}],"providerMetadata":{"orgId":"a0819718-46f1-4df5-94e2-005712e83aaa","shortName":"GitHub_M","dateUpdated":"2026-10-15T17:13:26.636Z"},"descriptions":[{"lang":"en","value":"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."}],"source":{"advisory":"GHSA-24cc-9352-h2pg","discovery":"UNKNOWN"}},"adp":[{"metrics":[{"other":{"type":"ssvc","content":{"timestamp":"2026-10-21T00:59:51.994856Z","id":"CVE-2026-104266","options":[{"Exploitation":"none"},{"Automatable":"no"},{"Technical Impact":"partial"}],"role":"CISA Coordinator","version":"2.0.3"}}}],"title":"CISA ADP Vulnrichment","providerMetadata":{"orgId":"134c704f-9b21-4f2e-91b3-4a467353bcc0","shortName":"CISA-ADP","dateUpdated":"2026-10-21T01:00:05.989Z"}}]}}