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Vulnerability record · CVE-2020-8192 · published 30 July 2020

CVE-2020-8192: Fastify uncontrolled resource consumption vulnerability

Fastify · Fastify

A denial of service vulnerability exists in Fastify v2.14.1 and v3.0.0-rc.4 that allows a malicious user to trigger resource exhaustion (when the allErrors option is used) with specially crafted schemas.

6.5 CVSS 3.1 Medium EPSS 1.2% · top 34.2% CWE-400 · Uncontrolled resource consumption
6.5CVSS 3.1 base score, v2 4.0
1.2%EPSS exploitation probability, 30 days
NoNot in CISA KEV
1Affected product versions listed by NVD
2References, 2 tagged exploit
17 Jun 2026Last modified by NVD

Description

A denial of service vulnerability exists in Fastify v2.14.1 and v3.0.0-rc.4 that allows a malicious user to trigger resource exhaustion (when the allErrors option is used) with specially crafted schemas.

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

Affected products

1 vulnerable configurations from NVD's CPE data, grouped by vendor and product.

References

LinkTags
https://hackerone.com/reports/903521 ExploitThird Party Advisory
https://hackerone.com/reports/903521 ExploitThird Party Advisory

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Related vulnerabilities

Same products first, then exploited flaws of the same weakness class.

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Source: NIST National Vulnerability Database (record CVE-2020-8192), CISA KEV, FIRST EPSS (scores of 2026-09-27). This page is refreshed as NVD updates the record.