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CVE-2026-104266

CVE-2026-104266 · tinytag: Infinite loop when parsing certain M4A files containing invalid atoms

This page contains facts from public vulnerability sources. Check the original advisory before updating.

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.

CVSS 6.5 · Medium · EPSS 0.3% · Fix available

Published
Updated

Stack: system · python

Affected products and versions

  • tinytag

    Versions
    • >= 2.0.0, < 2.3.0: Affected

    No fix published

  • python-tinytag Debian:14

    Versions
    • 2.2.1-1
    Affected ranges
    • ECOSYSTEM: < 2.3.0-1

    Update to 2.3.0-1

  • tinytag PyPI

    Versions
    • 2.0.0
    • 2.1.0
    • 2.1.1
    • 2.1.2
    • 2.2.0
    • 2.2.1
    Affected ranges
    • ECOSYSTEM: ≥ 2.0.0, < 2.3.0

    Update to 2.3.0

  • python-tinytag Ubuntu:26.10

    Versions
    • 2.3.0-2
    Affected ranges
    • ECOSYSTEM: (−∞, +∞)

    No fix published

Original sources

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