# Fastify Multipart vulnerabilities

Source: https://junglewise.ai/threats/technologies/multipart  
Publisher: Junglewise Threat Intelligence, https://junglewise.ai/threats  
Updated: 10 November 2026, 03:07 UTC. Rebuilt every hour.  
Data: https://junglewise.ai/threats/technologies/multipart.json  
License: CC BY 4.0 with a link back

Junglewise Threat Intelligence has tracked 4 vulnerabilities in Fastify Multipart: 0 in the last 7 days and 1 in the last 90 days, 0 of them critical and 0 exploited in the wild. The most recent, CVE-2026-117531, was published on 2 November 2026. 1 vulnerability in the last four weeks, up from none in the four before.

## Counts

- Last 7 days: 0
- Last 30 days: 1
- Last 90 days: 1
- All time: 4 (0 critical, 0 exploited in the wild)

## About Fastify Multipart

Fastify plugin for parsing multipart form data in HTTP requests.

## Latest Fastify Multipart vulnerabilities

- [CVE-2026-117531: @fastify/multipart denial of service via malformed upload](https://junglewise.ai/threats/cve-2026-117531-fastify-multipart-is-the-multipart-form-data-and-file-upload) (medium, CVSS 5.9, published 2 Nov 2026)
- [CVE-2026-28356: defnull multipart ReDoS in parse_options_header](https://junglewise.ai/threats/cve-2026-28356-defnull-multipart-redos-in-parse-options-header) (high, CVSS 7.5, published 12 Mar 2026)
- [CVE-2025-24033: Fastify @fastify/multipart resource exhaustion in saveRequestFiles](https://junglewise.ai/threats/cve-2025-24033-fastify-fastify-multipart-resource-exhaustion-in-saverequestfiles) (low, CVSS 3.1, published 23 Jan 2025)
- [CVE-2023-25576: Fastify Multipart denial of service due to unlimited parts](https://junglewise.ai/threats/cve-2023-25576-fastify-multipart-denial-of-service-due-to-unlimited-parts) (low, CVSS 3.1, published 14 Feb 2023)

## Most severe Fastify Multipart vulnerabilities

- [CVE-2026-28356: defnull multipart ReDoS in parse_options_header](https://junglewise.ai/threats/cve-2026-28356-defnull-multipart-redos-in-parse-options-header) (high, CVSS 7.5, published 12 Mar 2026)
- [CVE-2026-117531: @fastify/multipart denial of service via malformed upload](https://junglewise.ai/threats/cve-2026-117531-fastify-multipart-is-the-multipart-form-data-and-file-upload) (medium, CVSS 5.9, published 2 Nov 2026)
- [CVE-2023-25576: Fastify Multipart denial of service due to unlimited parts](https://junglewise.ai/threats/cve-2023-25576-fastify-multipart-denial-of-service-due-to-unlimited-parts) (low, CVSS 3.1, published 14 Feb 2023)
- [CVE-2025-24033: Fastify @fastify/multipart resource exhaustion in saveRequestFiles](https://junglewise.ai/threats/cve-2025-24033-fastify-fastify-multipart-resource-exhaustion-in-saverequestfiles) (low, CVSS 3.1, published 23 Jan 2025)

## Vulnerabilities per week

1 vulnerability in the last four weeks, up from none in the four before.

| Week of | Vulns | Critical | Exploited |
| --- | --- | --- | --- |
| 17 Aug 2026 | 0 | 0 | 0 |
| 24 Aug 2026 | 0 | 0 | 0 |
| 31 Aug 2026 | 0 | 0 | 0 |
| 7 Sep 2026 | 0 | 0 | 0 |
| 14 Sep 2026 | 0 | 0 | 0 |
| 21 Sep 2026 | 0 | 0 | 0 |
| 28 Sep 2026 | 0 | 0 | 0 |
| 5 Oct 2026 | 0 | 0 | 0 |
| 12 Oct 2026 | 0 | 0 | 0 |
| 19 Oct 2026 | 0 | 0 | 0 |
| 26 Oct 2026 | 0 | 0 | 0 |
| 2 Nov 2026 | 1 | 0 | 0 |
| 9 Nov 2026 | 0 | 0 | 0 |

## Other Fastify technologies

- [Fastify-Express](https://junglewise.ai/threats/technologies/express): 9 vulnerabilities
- [Fastify Http-Proxy](https://junglewise.ai/threats/technologies/http-proxy): 7 vulnerabilities
- [Fastify Middie](https://junglewise.ai/threats/technologies/middie): 7 vulnerabilities
- [Fastify Reply-From](https://junglewise.ai/threats/technologies/reply-from): 4 vulnerabilities
- [Fastify-Static](https://junglewise.ai/threats/technologies/static): 4 vulnerabilities
- [Fastify Busboy](https://junglewise.ai/threats/technologies/busboy): 3 vulnerabilities

## Sources

NVD, GitHub Security Advisories, OSV, the CISA Known Exploited Vulnerabilities catalog, FIRST EPSS and vendor advisories. Rebuilt every hour. Cite as: Junglewise Threat Intelligence, "Fastify Multipart vulnerabilities", https://junglewise.ai/threats/technologies/multipart, 10 November 2026.