Vulnerability-Lookup

GHSA-24CC-9352-H2PG

Vulnerability from github – Published: 2026-10-15 20:16 – Updated: 2026-10-15 20:16

Summary

tinytag: Infinite loop when parsing certain M4A files containing invalid atoms

Details

Impact

An M4A file containing a sub-atom with a size of zero in the ---- atom makes the parser enter an infinite loop, resulting in a denial-of-service for programs reading such files with tinytag.

Patches

The issue has been fixed in tinytag 2.3.0, by reusing the primary atom parsing code path that contains appropriate size checks.

Workarounds

No workarounds exist. Users must upgrade to tinytag 2.3.0.

Severity

6.5 (Medium)


                  
                    CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:N/I:N/A:H

Show details on source website

JSON

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{
  "affected": [
    {
      "package": {
        "ecosystem": "PyPI",
        "name": "tinytag"
      },
      "ranges": [
        {
          "events": [
            {
              "introduced": "2.0.0"
            },
            {
              "fixed": "2.3.0"
            }
          ],
          "type": "ECOSYSTEM"
        }
      ]
    }
  ],
  "aliases": [
    "CVE-2026-104266"
  ],
  "database_specific": {
    "cwe_ids": [
      "CWE-835"
    ],
    "github_reviewed": true,
    "github_reviewed_at": "2026-10-15T20:16:47Z",
    "nvd_published_at": "2026-10-15T18:17:22Z",
    "severity": "MODERATE"
  },
  "details": "### Impact\nAn M4A file containing a sub-atom with a size of zero in the `----` atom makes the parser enter an infinite loop, resulting in a denial-of-service for programs reading such files with tinytag.\n\n### Patches\nThe issue has been fixed in tinytag 2.3.0, by reusing the primary atom parsing code path that contains appropriate size checks.\n\n### Workarounds\nNo workarounds exist. Users must upgrade to tinytag 2.3.0.",
  "id": "GHSA-24cc-9352-h2pg",
  "modified": "2026-10-15T20:16:47Z",
  "published": "2026-10-15T20:16:47Z",
  "references": [
    {
      "type": "WEB",
      "url": "https://github.com/tinytag/tinytag/security/advisories/GHSA-24cc-9352-h2pg"
    },
    {
      "type": "ADVISORY",
      "url": "https://nvd.nist.gov/vuln/detail/CVE-2026-104266"
    },
    {
      "type": "WEB",
      "url": "https://github.com/tinytag/tinytag/pull/326"
    },
    {
      "type": "WEB",
      "url": "https://github.com/tinytag/tinytag/commit/9ada221ba44990cb02cd9002d992186e037b515e"
    },
    {
      "type": "PACKAGE",
      "url": "https://github.com/tinytag/tinytag"
    },
    {
      "type": "WEB",
      "url": "https://github.com/tinytag/tinytag/releases/tag/2.3.0"
    }
  ],
  "schema_version": "1.4.0",
  "severity": [
    {
      "score": "CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:N/I:N/A:H",
      "type": "CVSS_V3"
    }
  ],
  "summary": "tinytag: Infinite loop when parsing certain M4A files containing invalid atoms"
}

CVE-2026-104266 (GCVE-0-2026-104266)

Vulnerability from cvelistv5 – Published: 2026-10-15 17:13 – Updated: 2026-10-15 17:13

Title

tinytag: Infinite loop when parsing certain M4A files containing invalid atoms

Summary

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.

Severity

6.5 (Medium)


                        
                          CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:N/I:N/A:H

CWE

CWE-835 - Loop with Unreachable Exit Condition ('Infinite Loop')

Assigner

GitHub_M CNA under the mitre root

CNA scorecard C 72/100 over 7712 records in the last 180 days details

References

4 references

URL	Tags
https://github.com/tinytag/tinytag/security/advis…	x_refsource_CONFIRM
https://github.com/tinytag/tinytag/pull/326	x_refsource_MISC
https://github.com/tinytag/tinytag/commit/9ada221…	x_refsource_MISC
https://github.com/tinytag/tinytag/releases/tag/2.3.0	x_refsource_MISC

Impacted products

1 product

Vendor	Product	Version
tinytag	tinytag	Affected: >= 2.0.0, < 2.3.0

Show details on NVD website

JSON

To clipboard

{
  "containers": {
    "cna": {
      "affected": [
        {
          "product": "tinytag",
          "vendor": "tinytag",
          "versions": [
            {
              "status": "affected",
              "version": "\u003e= 2.0.0, \u003c 2.3.0"
            }
          ]
        }
      ],
      "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."
        }
      ],
      "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"
          }
        }
      ],
      "problemTypes": [
        {
          "descriptions": [
            {
              "cweId": "CWE-835",
              "description": "CWE-835: Loop with Unreachable Exit Condition (\u0027Infinite Loop\u0027)",
              "lang": "en",
              "type": "CWE"
            }
          ]
        }
      ],
      "providerMetadata": {
        "dateUpdated": "2026-10-15T17:13:26.636Z",
        "orgId": "a0819718-46f1-4df5-94e2-005712e83aaa",
        "shortName": "GitHub_M"
      },
      "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"
        }
      ],
      "source": {
        "advisory": "GHSA-24cc-9352-h2pg",
        "discovery": "UNKNOWN"
      },
      "title": "tinytag: Infinite loop when parsing certain M4A files containing invalid atoms"
    }
  },
  "cveMetadata": {
    "assignerOrgId": "a0819718-46f1-4df5-94e2-005712e83aaa",
    "assignerShortName": "GitHub_M",
    "cveId": "CVE-2026-104266",
    "datePublished": "2026-10-15T17:13:26.636Z",
    "dateReserved": "2026-10-01T19:04:39.707Z",
    "dateUpdated": "2026-10-15T17:13:26.636Z",
    "state": "PUBLISHED"
  },
  "dataType": "CVE_RECORD",
  "dataVersion": "5.2"
}

Sightings

Author	Source	Type	Date	Other

Nomenclature

Seen: The vulnerability was mentioned, discussed, or observed by the user.
Confirmed: The vulnerability has been validated from an analyst's perspective.
Published Proof of Concept: A public proof of concept is available for this vulnerability.
Exploited: The vulnerability was observed as exploited by the user who reported the sighting.
Patched: The vulnerability was observed as successfully patched by the user who reported the sighting.
Not exploited: The vulnerability was not observed as exploited by the user who reported the sighting.
Not confirmed: The user expressed doubt about the validity of the vulnerability.
Not patched: The vulnerability was not observed as successfully patched by the user who reported the sighting.

Vulnerability timeline

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The MITRE ATT&CK techniques below are AI-generated suggestions, inferred from the description of the vulnerability by the CIRCL/vulnerability-attack-technique-classification-roberta-base model, served locally by ML-Gateway. They have not been verified by an analyst and are provided for guidance only.
The approach is described in our paper Mapping CVEs to MITRE ATT&CK Techniques: A Curated Gold-Set Classifier and the Limits of LLM-Assisted Label Expansion.
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