{"id":"CVE-2026-104266","url":"https://www.cyber-defence.io/tools/cve/CVE-2026-104266","generatedAt":"2026-10-27T23:59:15.765Z","title":"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.","description":"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.","published":"2026-10-15T18:17:23.000Z","lastModified":"2026-10-21T01:17:20.000Z","status":"Deferred","sourceIdentifier":"security-advisories@github.com","cvss":{"version":"3.1","score":6.5,"severity":"MEDIUM","vector":"CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:N/I:N/A:H"},"cwe":["CWE-835"],"affected":[],"epss":{"score":0.00332,"percentile":0.26153,"date":"2026-10-26","history":[{"date":"2026-10-16","score":0.00252,"percentile":0.15566}]},"kev":{"listed":false},"exploits":{"count":0,"verified":false,"firstPublished":null,"source":"Exploit-DB (https://gitlab.com/exploit-database/exploitdb)","entries":[]},"verdict":{"level":"low","text":"Lower severity and a low EPSS score (0.33%). Track it; it rarely justifies an emergency change on its own."},"changes":[{"kind":"new","label":"New CVE","at":"2026-10-15T18:17:23.000Z","detail":{"score":"6.5","severity":"MEDIUM","publishedAt":"2026-10-15T18:17:22.983Z"},"summary":"New CVE, medium severity (CVSS 6.5)."}],"references":[{"url":"https://github.com/tinytag/tinytag/commit/9ada221ba44990cb02cd9002d992186e037b515e","source":"security-advisories@github.com"},{"url":"https://github.com/tinytag/tinytag/pull/326","source":"security-advisories@github.com"},{"url":"https://github.com/tinytag/tinytag/releases/tag/2.3.0","source":"security-advisories@github.com"},{"url":"https://github.com/tinytag/tinytag/security/advisories/GHSA-24cc-9352-h2pg","source":"security-advisories@github.com"}],"sources":{"nvd":"https://nvd.nist.gov/vuln/detail/CVE-2026-104266","epss":"https://www.first.org/epss/","kev":"https://www.cisa.gov/known-exploited-vulnerabilities-catalog","exploitdb":"https://www.exploit-db.com/"},"licence":"CC BY 4.0 — link back to the CVE Explorer if you publish the results; upstream data remains subject to its own terms."}