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

Vulnerability from cvelistv5 – Published: 2026-10-15 17:13 – Updated: 2026-10-15 17:13
VLAI
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 7765 records in the last 180 days details
References
Impacted products
Vendor Product Version CPE status
tinytag tinytag Affected: >= 2.0.0, < 2.3.0
guessed Create a notification for this product.
Show details on NVD website
To clipboard 

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        }
      ],
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      ],
      "problemTypes": [
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              "description": "CWE-835: Loop with Unreachable Exit Condition (\u0027Infinite Loop\u0027)",
              "lang": "en",
              "type": "CWE"
            }
          ]
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      ],
      "providerMetadata": {
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        "orgId": "a0819718-46f1-4df5-94e2-005712e83aaa",
        "shortName": "GitHub_M"
      },
      "references": [
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          "name": "https://github.com/tinytag/tinytag/security/advisories/GHSA-24cc-9352-h2pg",
          "tags": [
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          ],
          "url": "https://github.com/tinytag/tinytag/security/advisories/GHSA-24cc-9352-h2pg"
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          "tags": [
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          "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"
    }
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  "cveMetadata": {
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    "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"
  },
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  "vulnerability-lookup:meta": {
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      "percentile": "0.15566"
    },
    "nvd": {
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                "versions": [
                  {
                    "status": "affected",
                    "version": "\u003e= 2.0.0, \u003c 2.3.0"
                  }
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        "cveTags": [],
        "descriptions": [
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            "lang": "en",
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          }
        ],
        "id": "CVE-2026-104266",
        "lastModified": "2026-10-16T20:04:29.760",
        "metrics": {
          "cvssMetricV31": [
            {
              "cvssData": {
                "attackComplexity": "LOW",
                "attackVector": "NETWORK",
                "availabilityImpact": "HIGH",
                "baseScore": 6.5,
                "baseSeverity": "MEDIUM",
                "confidentialityImpact": "NONE",
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          },
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          },
          {
            "source": "security-advisories@github.com",
            "url": "https://github.com/tinytag/tinytag/releases/tag/2.3.0"
          },
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            "url": "https://github.com/tinytag/tinytag/security/advisories/GHSA-24cc-9352-h2pg"
          }
        ],
        "sourceIdentifier": "security-advisories@github.com",
        "vulnStatus": "Deferred",
        "weaknesses": [
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                "lang": "en",
                "value": "CWE-835"
              }
            ],
            "source": "security-advisories@github.com",
            "type": "Primary"
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    },
    "redhat_vex": {
      "aggregate_severity": "Moderate",
      "current_release_date": "2026-10-15T18:45:46+00:00",
      "cve": "CVE-2026-104266",
      "id": "CVE-2026-104266",
      "initial_release_date": "2026-10-15T17:13:26.636000+00:00",
      "product_status:known_affected": "5",
      "source": "Red Hat CSAF VEX",
      "status": "final",
      "title": "tinytag: tinytag: Denial of Service via infinite loop in M4A parser",
      "url": "https://security.access.redhat.com/data/csaf/v2/vex/2026/cve-2026-104266.json",
      "version": "3"
    }
  }
}



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