CVE-2020-8136 Uncontrolled Resource Consumption in fastify-multipart
An attacker can crash fastify applications by sending crafted multipart requests due to prototype pollution in the fastify-multipart library.
- Exploited in the wild
- Not known
- Login needed
- Not needed
- Attackable
- Over the internet
- Victim action needed
- Not needed
- Fix
- Available
What is CVE-2020-8136?
CVE-2020-8136 is a high-severity denial of service vulnerability in fastify-multipart, published on 20 Mar 2020. An attacker can exploit it over the internet without logging in, with no action from the victim.
Official description
Prototype pollution vulnerability in fastify-multipart < 1.0.5 allows an attacker to crash fastify applications parsing multipart requests by sending a specially crafted request.
Weakness: CWE-400
Which versions are affected by CVE-2020-8136?
2 open source packages ship an affected version, including fastify-multipart. It affects 1 product.
| Package | Affected | Fixed in |
|---|---|---|
fastify-multipart npm | All versions | 1.0.5 |
fastify-multipart npm | All versions | 1.0.5 |
Products include Fastify Fastify-Multipart.
How do I fix CVE-2020-8136?
Upgrade fastify-multipart to 1.0.5 or later.
Upgrade, then put limits on request size, rate and nesting depth so one client cannot exhaust the service. More about Denial of service.
Is CVE-2020-8136 being exploited?
There is no known exploitation of CVE-2020-8136 in the wild and no public exploit code.
Other vulnerabilities in fastify-multipart
- CVE-2026-18549 @fastify/multipart vulnerable to Denial of Service via aborted upload after fileSize limit
- CVE-2026-19474 @fastify/multipart vulnerable to Denial of Service via temporary file leak on aborted upload
- CVE-2023-25576 @fastify/multipart vulnerable to DoS due to unlimited number of parts
- CVE-2021-23597 Denial of Service (DoS)
Sources
Also known as GHSA-p9f8-gqjf-m75j.