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CVE-2020-8136

19
FAUCET Score

CVE-2020-8136 is a prototype pollution vulnerability in fastify-multipart versions prior to 1.0.5, allowing an unauthenticated attacker to crash fastify applications by sending a specially crafted multipart request. With a CVSS score of 7.5 (HIGH), this vulnerability has a low attack complexity and requires no user interaction, leading to a high impact on availability. While no active exploitation, public exploit code (Metasploit, Nuclei, ExploitDB), or significant community discussion has been observed, organizations using affected fastify-multipart versions should prioritize patching to mitigate the risk of denial-of-service.

Impacted Technologies

VendorProductVersion(s)CPE
< 1.0.5CPE matchmatch criteria
cpe:2.3:a:fastify:fastify-multipart:*:*:*:*:*:fastify:*:*

CVSS Data

CVSS version used by this source: 3.1

7.5HIGH

CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H

Attack Vector
NETWORK
Attack Complexity
LOW
Privileges Required
NONE
User Interaction
NONE
Scope
UNCHANGED
Confidentiality Impact
NONE
Integrity Impact
NONE
Availability Impact
HIGH
Exploitability Score
3.9
Impact Score
3.6
CvssVersion
3.1

Exploit Intelligence

EPSS Score
1.46%
Probability of exploitation in next 30 days
EPSS Percentile
70.8%
Percentile rank of EPSS score among Peer Group
As of 2026-07-27
Model: v2026.06.15
This CVE's current EPSS score of 0.0146 is in the 52nd percentile among its peer group of 51,506 CVEs.

Social Chatter

No social media mentions found for this CVE.

The average CVE in this peer group has 0.0 Twitter, 0.0 Reddit, 0.1 Bluesky, 0.1 Mastodon, and 0.4 GitHub mentions.

Media Mentions

No media coverage found for this CVE.

The average CVE in this peer group has 0.1 InfoSec Media, 0.0 Vendor Blog, and 0.0 Security Researcher mentions.

Remediation

Patch Available

Vendor Patches (1)

npmpatch availablevia ghsa
Product: fastify-multipartFixed in: 1.0.5

Vendor Advisories (1)

npmGHSA-p9f8-gqjf-m75jmedium

Uncontrolled Resource Consumption in fastify-multipart

May 6, 2021

References

hackerone.com / reports/804772
ExploitPatchThird Party Advisory