{"id":"CVE-2026-32256","aliases":["EUVD-2026-12767","GHSA-v6c2-xwv6-8xf7"],"status":"published","title":"music-metadata has an infinite loop vulnerability in ASF parser","description":"music-metadata is a metadata parser for audio and video media files. Prior to version 11.12.3, music-metadata's ASF parser (`parseExtensionObject()` in `lib/asf/AsfParser.ts:112-158`) enters an infinite loop when a sub-object inside the ASF Header Extension Object has `objectSize = 0`. Version 11.12.3 fixes the issue.","severity":{"version":"3.1","score":7.5,"vector":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H","level":"high","assessor":"cna","from":"cve"},"epss":{"day":"2026-11-10","score":0.0042,"percentile":0.36614,"model":"v2026.06.15"},"facts":{"in_kev":false,"known_exploited":false,"public_exploit":false,"fix_available":true},"cwes":["CWE-835"],"published":"2026-03-17T20:04:48Z","modified":"2026-10-28T02:30:31Z","fixes":[{"ecosystem":"npm","package":"music-metadata","fixed_in":["11.12.3"],"sources":["ghsa","osv"]}],"affected":[{"source":"ghsa","ecosystem":"npm","package":"music-metadata","ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"},{"last_affected":"11.12.1"},{"fixed":"11.12.3"}]}]},{"source":"osv","ecosystem":"npm","package":"music-metadata","ranges":[{"type":"SEMVER","events":[{"introduced":"0"},{"fixed":"11.12.3"}]}]}],"products":[{"vendor":"borewit","product":"music-metadata"}],"references":[{"url":"https://github.com/Borewit/music-metadata/security/advisories/GHSA-v6c2-xwv6-8xf7","tags":["x_refsource_CONFIRM","Mitigation","Vendor Advisory","advisory","web"]},{"url":"https://github.com/Borewit/music-metadata/releases/tag/v11.12.3","tags":["x_refsource_MISC","Product","Release Notes","web"]},{"url":"https://nvd.nist.gov/vuln/detail/CVE-2026-32256","tags":["advisory"]},{"url":"https://github.com/advisories/GHSA-v6c2-xwv6-8xf7"},{"url":"https://github.com/CVEProject/cvelistV5/tree/main/cves/2026/32xxx/CVE-2026-32256.json","tags":["advisory"]},{"url":"https://github.com/Borewit/music-metadata","tags":["package"]}],"sources":{"cve":[{"id":"CVE-2026-32256","title":"music-metadata has an infinite loop vulnerability in ASF parser","description":"music-metadata is a metadata parser for audio and video media files. Prior to version 11.12.3, music-metadata's ASF parser (`parseExtensionObject()` in `lib/asf/AsfParser.ts:112-158`) enters an infinite loop when a sub-object inside the ASF Header Extension Object has `objectSize = 0`. Version 11.12.3 fixes the issue.","status":"published","published":"2026-03-18T03:22:33.342Z","modified":"2026-03-18T13:34:12.042Z","cvss":[{"version":"3.1","score":7.5,"vector":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H","level":"high","assessor":"cna"}],"cwes":["CWE-835"],"updated_at":"2026-11-02T14:19:57.47301Z"}],"euvd":[{"id":"EUVD-2026-12767","description":"music-metadata is a metadata parser for audio and video media files. Prior to version 11.12.3, music-metadata's ASF parser (`parseExtensionObject()` in `lib/asf/AsfParser.ts:112-158`) enters an infinite loop when a sub-object inside the ASF Header Extension Object has `objectSize = 0`. Version 11.12.3 fixes the issue.","status":"published","published":"2026-03-18T03:22:33Z","modified":"2026-03-18T13:34:12Z","cvss":[{"version":"3.1","score":7.5,"vector":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H","level":"high"}],"updated_at":"2026-11-02T19:25:33.306068Z"}],"ghsa":[{"id":"GHSA-v6c2-xwv6-8xf7","title":"music-metadata has an infinite loop vulnerability in ASF parser","description":"# Summary\n\nmusic-metadata's ASF parser (`parseExtensionObject()` in `lib/asf/AsfParser.ts:112-158`) enters an infinite loop when a sub-object inside the ASF Header Extension Object has `objectSize = 0`.\n\n## Root Cause\n\nWhen objectSize is 0:\n1. `remaining = 0 - 24 = -24`\n2. `tokenizer.ignore(-24)` moves the read position backward by 24 bytes\n3. `extensionSize -= 0` (loop counter never decreases)\n4. `while (extensionSize \u003e 0)` never exits\n5. The same 24-byte header is re-read infinitely\n\nThis is the same pattern as CVE-2026-31808 (GHSA-5v7r-6r5c-r473) in file-type — strtok3's `AbstractTokenizer.ignore()` accepts negative values without validation.\n\n## Affected Methods\n- `parseFile()` — HANGS (FileTokenizer inherits vulnerable ignore())\n- `parseBuffer()` — HANGS (BufferTokenizer inherits vulnerable ignore())\n- `parseStream()` — NOT affected (ReadStreamTokenizer has own ignore() that throws RangeError)\n\n## Impact\nA 100-byte crafted .asf file permanently hangs any application using parseFile() or parseBuffer(). music-metadata has 2.2M weekly npm downloads.\n\n## Suggested Fix\nValidate `objectSize \u003e= minimumHeaderSize` before calculating the payload. Or fix strtok3's `AbstractTokenizer.ignore()` to reject negative values.","status":"published","published":"2026-03-17T20:04:48Z","modified":"2026-03-19T21:00:51Z","cvss":[{"version":"3.1","score":7.5,"vector":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H","level":"high"}],"cwes":["CWE-835"],"updated_at":"2026-11-02T14:39:38.524712Z"}],"nvd":[{"id":"CVE-2026-32256","description":"music-metadata is a metadata parser for audio and video media files. Prior to version 11.12.3, music-metadata's ASF parser (`parseExtensionObject()` in `lib/asf/AsfParser.ts:112-158`) enters an infinite loop when a sub-object inside the ASF Header Extension Object has `objectSize = 0`. Version 11.12.3 fixes the issue.","status":"published","published":"2026-03-18T04:17:25.523Z","modified":"2026-06-17T10:35:26.34Z","cvss":[{"version":"3.1","score":7.5,"vector":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H","level":"high","assessor":"secondary"}],"cwes":["CWE-835"],"updated_at":"2026-11-02T14:12:09.735529Z"}],"osv":[{"id":"CVE-2026-32256","title":"music-metadata has an infinite loop vulnerability in ASF parser","description":"music-metadata is a metadata parser for audio and video media files. Prior to version 11.12.3, music-metadata's ASF parser (`parseExtensionObject()` in `lib/asf/AsfParser.ts:112-158`) enters an infinite loop when a sub-object inside the ASF Header Extension Object has `objectSize = 0`. Version 11.12.3 fixes the issue.","status":"published","published":"2026-03-18T03:22:33.342Z","modified":"2026-10-28T02:30:31.988394945Z","cvss":[{"version":"3.1","score":7.5,"vector":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H","level":"high"}],"cwes":["CWE-835"],"updated_at":"2026-11-02T15:45:01.218144Z"},{"id":"GHSA-v6c2-xwv6-8xf7","title":"music-metadata has an infinite loop vulnerability in ASF parser","description":"# Summary\n\nmusic-metadata's ASF parser (`parseExtensionObject()` in `lib/asf/AsfParser.ts:112-158`) enters an infinite loop when a sub-object inside the ASF Header Extension Object has `objectSize = 0`.\n\n## Root Cause\n\nWhen objectSize is 0:\n1. `remaining = 0 - 24 = -24`\n2. `tokenizer.ignore(-24)` moves the read position backward by 24 bytes\n3. `extensionSize -= 0` (loop counter never decreases)\n4. `while (extensionSize \u003e 0)` never exits\n5. The same 24-byte header is re-read infinitely\n\nThis is the same pattern as CVE-2026-31808 (GHSA-5v7r-6r5c-r473) in file-type — strtok3's `AbstractTokenizer.ignore()` accepts negative values without validation.\n\n## Affected Methods\n- `parseFile()` — HANGS (FileTokenizer inherits vulnerable ignore())\n- `parseBuffer()` — HANGS (BufferTokenizer inherits vulnerable ignore())\n- `parseStream()` — NOT affected (ReadStreamTokenizer has own ignore() that throws RangeError)\n\n## Impact\nA 100-byte crafted .asf file permanently hangs any application using parseFile() or parseBuffer(). music-metadata has 2.2M weekly npm downloads.\n\n## Suggested Fix\nValidate `objectSize \u003e= minimumHeaderSize` before calculating the payload. Or fix strtok3's `AbstractTokenizer.ignore()` to reject negative values.","status":"published","published":"2026-03-17T20:04:48Z","modified":"2026-03-19T21:16:28.989979Z","cvss":[{"version":"3.1","score":7.5,"vector":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H","level":"high"}],"cwes":["CWE-835"],"updated_at":"2026-11-02T15:46:56.981655Z"}]}}