CVE-2026-19484
- Source
- https://cve.org/CVERecord?id=CVE-2026-19484
- Import Source
- https://storage.googleapis.com/cve-osv-conversion/osv-output/CVE-2026-19484.json
- JSON Data
- https://api.osv.dev/v1/vulns/CVE-2026-19484
- Aliases
-
- GHSA-xjh9-v7x6-24jw
- Published
- 2026-08-13T08:50:47.361Z
- Modified
- 2026-08-15T11:45:47.395008278Z
- Severity
-
- 7.5 (High) CVSS_V3 - CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H CVSS Calculator
- Summary
- @fastify/busboy vulnerable to Denial of Service via oversized multipart boundary
- Details
-
@fastify/busboy is a multipart form-data parser. In versions 3.1.0 through 3.2.0, a remote unauthenticated attacker can stall the Node.js event loop by sending a multipart request whose boundary is crafted to a specific length. The vendored streaming search stores its skip table in a fixed 256 entry byte array, and a boundary of exactly 252 bytes makes the search needle 256 bytes, which truncates the default skip distance to zero and turns the search into a CPU bound loop on a small body. A single small request can keep one core busy and deny service to other requests handled by the same process. The issue is fixed in @fastify/busboy 3.2.1, which widens the skip table so the skip distance is preserved. Users should upgrade to 3.2.1.
- Database specific
{ "cna_assigner": "openjs", "cwe_ids": [ "CWE-1322", "CWE-835" ], "osv_generated_from": "https://github.com/CVEProject/cvelistV5/tree/main/cves/2026/19xxx/CVE-2026-19484.json" }- References