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@fastify/busboy vulnerable to Denial of Service via prototype-named multipart part header

Collected exploitation and prediction evidence

Risk source coverage

CISA KEV is observed exploitation evidence. FIRST EPSS is a dated prediction of exploitation in the next 30 days. Missing scores are unknown. This collector requests predictions only for explicit CVE aliases in the public NuGet archive; Microsoft release views retain their existing prediction scope.

No collected risk observation for these identifiers. This does not establish absence of exploitation or a zero probability.

Dated risk observations

Risk history is separate from CNA/OSV content history. Daily score drift is retained but only an upward crossing of 10% triggers the prediction change event.

Immutable source observations

11 recorded revisions

Each citation identifies one complete source statement. Source modification dates and the time this installation observed them are distinct. Latest history includes records historically associated by source identifiers; a removed alias is not a current equivalence claim. Exact citations show that source record's own earlier observations. Failed reads and unchanged polls do not rewrite history.

11 Nov 2026 06:28:00 UTC

@fastify/busboy is a multipart form-data parser. In versions 1.0.0 through 3.2.0, an attacker who can submit multipart form-data can crash the parser by sending a part header whose name is a prototype-inherited property such as __proto__ or…

euvd · EUVD-2026-57757 · Published

9 Nov 2026 06:04:04 UTC

@fastify/busboy is a multipart form-data parser. In versions 1.0.0 through 3.2.0, an attacker who can submit multipart form-data can crash the parser by sending a part header whose name is a prototype-inherited property such as __proto__ or…

euvd · EUVD-2026-57757 · Published

7 Nov 2026 05:28:08 UTC

@fastify/busboy is a multipart form-data parser. In versions 1.0.0 through 3.2.0, an attacker who can submit multipart form-data can crash the parser by sending a part header whose name is a prototype-inherited property such as __proto__ or…

euvd · EUVD-2026-57757 · Published

5 Nov 2026 04:56:55 UTC

@fastify/busboy is a multipart form-data parser. In versions 1.0.0 through 3.2.0, an attacker who can submit multipart form-data can crash the parser by sending a part header whose name is a prototype-inherited property such as __proto__ or…

euvd · EUVD-2026-57757 · Published

3 Nov 2026 03:59:58 UTC

@fastify/busboy is a multipart form-data parser. In versions 1.0.0 through 3.2.0, an attacker who can submit multipart form-data can crash the parser by sending a part header whose name is a prototype-inherited property such as __proto__ or…

euvd · EUVD-2026-57757 · Published

1 Nov 2026 03:05:54 UTC

@fastify/busboy is a multipart form-data parser. In versions 1.0.0 through 3.2.0, an attacker who can submit multipart form-data can crash the parser by sending a part header whose name is a prototype-inherited property such as __proto__ or…

euvd · EUVD-2026-57757 · Published

30 Oct 2026 02:50:08 UTC

@fastify/busboy is a multipart form-data parser. In versions 1.0.0 through 3.2.0, an attacker who can submit multipart form-data can crash the parser by sending a part header whose name is a prototype-inherited property such as __proto__ or…

euvd · EUVD-2026-57757 · Published

28 Oct 2026 02:01:25 UTC

@fastify/busboy is a multipart form-data parser. In versions 1.0.0 through 3.2.0, an attacker who can submit multipart form-data can crash the parser by sending a part header whose name is a prototype-inherited property such as __proto__ or…

euvd · EUVD-2026-57757 · Published

25 Oct 2026 05:17:25 UTC

@fastify/busboy is a multipart form-data parser. In versions 1.0.0 through 3.2.0, an attacker who can submit multipart form-data can crash the parser by sending a part header whose name is a prototype-inherited property such as __proto__ or…

nvd · CVE-2026-19481 · Published

24 Oct 2026 13:17:17 UTC

@fastify/busboy vulnerable to Denial of Service via prototype-named multipart part header

osv · GHSA-x8mw-p69m-v3mx · Published

23 Oct 2026 15:48:27 UTC

@fastify/busboy vulnerable to Denial of Service via prototype-named multipart part header

cve-program · CVE-2026-19481 · Published

ChangeIntel

An IT change radar: releases, security, known issues, retirements, documentation changes, and service status from public sources. Every item links to supporting evidence; dates and statuses can change after they are read.

Sources read 11 Nov 20:03 UTC · 274 of 275 readable · 273 fully read · documentation 469/469 current