# fastify (npm) vulnerabilities Source: https://junglewise.ai/threats/technologies/fastify Publisher: Junglewise Threat Intelligence, https://junglewise.ai/threats Updated: 13 November 2026, 03:07 UTC. Rebuilt every hour. Data: https://junglewise.ai/threats/technologies/fastify.json License: CC BY 4.0 with a link back Junglewise Threat Intelligence has tracked 17 vulnerabilities in fastify (npm): 0 in the last 7 days and 8 in the last 90 days, 0 of them critical and 0 exploited in the wild. The most recent, CVE-2026-107832, was published on 13 October 2026. 1 vulnerability in the last four weeks, level on the four before (1). ## Counts - Last 7 days: 0 - Last 30 days: 0 - Last 90 days: 8 - All time: 17 (0 critical, 0 exploited in the wild) ## About fastify (npm) Fast and low overhead web framework for Node.js. ## Latest fastify (npm) vulnerabilities - [CVE-2026-107832: fastify is vulnerable to header validation bypass via case-sensitive propertyNames](https://junglewise.ai/threats/cve-2026-107832-fastify-is-a-fast-and-low-overhead-web-framework-for-node-js-in) (low, CVSS 3.7, published 13 Oct 2026) - [CVE-2026-92081: Fastify denial of service via unhandled exception on HTTP/2 trailer responses](https://junglewise.ai/threats/cve-2026-92081-fastify-denial-of-service-via-unhandled-exception-on-http-2) (medium, CVSS 5.9, published 16 Sep 2026) - [CVE-2026-84428: Fastify header validation bypass via incomplete schema case normalization](https://junglewise.ai/threats/cve-2026-84428-fastify-header-validation-bypass-via-incomplete-schema-case) (high, CVSS 7.5, published 4 Sep 2026) - [CVE-2026-84504: Fastify request body replacement via async validation result collision](https://junglewise.ai/threats/cve-2026-84504-fastify-request-body-replacement-via-async-validation-result) (high, CVSS 8.1, published 4 Sep 2026) - [CVE-2026-84469: Fastify request validation bypass via skipped boolean false schemas](https://junglewise.ai/threats/cve-2026-84469-fastify-request-validation-bypass-via-skipped-boolean-false) (high, CVSS 7.5, published 4 Sep 2026) - [CVE-2026-76169: Fastify authentication bypass via malformed URLs in encapsulated handlers](https://junglewise.ai/threats/cve-2026-76169-fastify-authentication-bypass-via-malformed-urls-in-encapsulated) (high, CVSS 7.5, published 4 Sep 2026) - [CVE-2026-16732: Fastify X-Forwarded spoofing in trustProxy hop-count](https://junglewise.ai/threats/cve-2026-16732-fastify-x-forwarded-header-spoofing-in-trustproxy-numeric-mode) (medium, CVSS 6.1, published 2 Sep 2026) - [CVE-2026-18504: Fastify schema validation bypass via root primitive coercion mismatch](https://junglewise.ai/threats/cve-2026-18504-fastify-schema-validation-bypass-via-root-primitive-coercion) (medium, CVSS 5.4, published 2 Sep 2026) - [CVE-2026-33806: Fastify schema validation bypass via malformed Content-Type header](https://junglewise.ai/threats/cve-2026-33806-fastify-schema-validation-bypass-via-malformed-content-type) (high, CVSS 7.5, published 15 Apr 2026) - [CVE-2026-3635: Fastify request.protocol and request.host spoofing via X-Forwarded headers](https://junglewise.ai/threats/cve-2026-3635-fastify-request-protocol-and-request-host-spoofing-via-x-forwarded) (low, CVSS 3.1, published 25 Mar 2026) - [CVE-2026-3419: Fastify malformed Content-Type header validation bypass](https://junglewise.ai/threats/cve-2026-3419-fastify-malformed-content-type-header-validation-bypass) (low, CVSS 3.1, published 5 Mar 2026) - [CVE-2026-25223: Fastify validation bypass via Content-Type header manipulation](https://junglewise.ai/threats/cve-2026-25223-fastify-validation-bypass-via-content-type-header-manipulation) (high, CVSS 7.5, published 3 Feb 2026) - [CVE-2026-25224: Fastify denial of service via unbounded memory allocation in sendWebStream](https://junglewise.ai/threats/cve-2026-25224-fastify-denial-of-service-via-unbounded-memory-allocation-in) (low, CVSS 3.1, published 2 Feb 2026) - [CVE-2025-32442: Fastify vulnerable to invalid content-type parsing, which could lead to validation bypass](https://junglewise.ai/threats/cve-2025-32442-fastify-body-schema-validation-bypass-via-leading-space-in) (low, CVSS 3.1, published 18 Apr 2025) - [CVE-2022-39288: Fastify denial of service via malicious Content-Type](https://junglewise.ai/threats/cve-2022-39288-fastify-denial-of-service-via-malicious-content-type) (low, CVSS 3.1, published 11 Oct 2022) - [CVE-2020-8192: Fastify denial of service via allErrors schema validation option](https://junglewise.ai/threats/cve-2020-8192-fastify-denial-of-service-via-allerrors-schema-validation-option) (info, CVSS 5.3, published 5 Aug 2020) - [CVE-2018-3711: Fastify denial of service with large JSON payloads](https://junglewise.ai/threats/cve-2018-3711-fastify-denial-of-service-with-large-json-payloads) (low, CVSS 3.1, published 18 Jul 2018) ## Most severe fastify (npm) vulnerabilities - [CVE-2026-84504: Fastify request body replacement via async validation result collision](https://junglewise.ai/threats/cve-2026-84504-fastify-request-body-replacement-via-async-validation-result) (high, CVSS 8.1, published 4 Sep 2026) - [CVE-2026-25223: Fastify validation bypass via Content-Type header manipulation](https://junglewise.ai/threats/cve-2026-25223-fastify-validation-bypass-via-content-type-header-manipulation) (high, CVSS 7.5, published 3 Feb 2026) - [CVE-2026-76169: Fastify authentication bypass via malformed URLs in encapsulated handlers](https://junglewise.ai/threats/cve-2026-76169-fastify-authentication-bypass-via-malformed-urls-in-encapsulated) (high, CVSS 7.5, published 4 Sep 2026) - [CVE-2026-84428: Fastify header validation bypass via incomplete schema case normalization](https://junglewise.ai/threats/cve-2026-84428-fastify-header-validation-bypass-via-incomplete-schema-case) (high, CVSS 7.5, published 4 Sep 2026) - [CVE-2026-84469: Fastify request validation bypass via skipped boolean false schemas](https://junglewise.ai/threats/cve-2026-84469-fastify-request-validation-bypass-via-skipped-boolean-false) (high, CVSS 7.5, published 4 Sep 2026) - [CVE-2026-33806: Fastify schema validation bypass via malformed Content-Type header](https://junglewise.ai/threats/cve-2026-33806-fastify-schema-validation-bypass-via-malformed-content-type) (high, CVSS 7.5, published 15 Apr 2026) - [CVE-2026-16732: Fastify X-Forwarded spoofing in trustProxy hop-count](https://junglewise.ai/threats/cve-2026-16732-fastify-x-forwarded-header-spoofing-in-trustproxy-numeric-mode) (medium, CVSS 6.1, published 2 Sep 2026) - [CVE-2026-92081: Fastify denial of service via unhandled exception on HTTP/2 trailer responses](https://junglewise.ai/threats/cve-2026-92081-fastify-denial-of-service-via-unhandled-exception-on-http-2) (medium, CVSS 5.9, published 16 Sep 2026) - [CVE-2026-18504: Fastify schema validation bypass via root primitive coercion mismatch](https://junglewise.ai/threats/cve-2026-18504-fastify-schema-validation-bypass-via-root-primitive-coercion) (medium, CVSS 5.4, published 2 Sep 2026) - [CVE-2026-107832: fastify is vulnerable to header validation bypass via case-sensitive propertyNames](https://junglewise.ai/threats/cve-2026-107832-fastify-is-a-fast-and-low-overhead-web-framework-for-node-js-in) (low, CVSS 3.7, published 13 Oct 2026) ## Vulnerabilities per week 1 vulnerability in the last four weeks, level on the four before (1). | Week of | Vulns | Critical | Exploited | | --- | --- | --- | --- | | 17 Aug 2026 | 0 | 0 | 0 | | 24 Aug 2026 | 0 | 0 | 0 | | 31 Aug 2026 | 6 | 0 | 0 | | 7 Sep 2026 | 0 | 0 | 0 | | 14 Sep 2026 | 1 | 0 | 0 | | 21 Sep 2026 | 0 | 0 | 0 | | 28 Sep 2026 | 0 | 0 | 0 | | 5 Oct 2026 | 0 | 0 | 0 | | 12 Oct 2026 | 1 | 0 | 0 | | 19 Oct 2026 | 0 | 0 | 0 | | 26 Oct 2026 | 0 | 0 | 0 | | 2 Nov 2026 | 0 | 0 | 0 | | 9 Nov 2026 | 0 | 0 | 0 | ## Other npm technologies - [openclaw (npm)](https://junglewise.ai/threats/technologies/npm-openclaw): 214 vulnerabilities - [flowise (npm)](https://junglewise.ai/threats/technologies/flowise): 133 vulnerabilities - [parse-server (npm)](https://junglewise.ai/threats/technologies/parse-server): 117 vulnerabilities - [vm2 (npm)](https://junglewise.ai/threats/technologies/vm2): 111 vulnerabilities - [electron (npm)](https://junglewise.ai/threats/technologies/electron): 77 vulnerabilities - [ghost (npm)](https://junglewise.ai/threats/technologies/ghost): 74 vulnerabilities - [n8n (npm)](https://junglewise.ai/threats/technologies/npm-n8n): 64 vulnerabilities - [hono (npm)](https://junglewise.ai/threats/technologies/hono): 62 vulnerabilities - [directus (npm)](https://junglewise.ai/threats/technologies/directus): 61 vulnerabilities - [nocodb (npm)](https://junglewise.ai/threats/technologies/nocodb): 54 vulnerabilities - [undici (npm)](https://junglewise.ai/threats/technologies/undici): 53 vulnerabilities - [@budibase/server (npm)](https://junglewise.ai/threats/technologies/budibase-server): 42 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 (npm) vulnerabilities", https://junglewise.ai/threats/technologies/fastify, 13 November 2026.