CVE-2021-29624— Lack of protection against cookie tossing attacks in fastify-csrf
Possible ATT&CK Techniques 1AI
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I. Basic Information for CVE-2021-29624
Vulnerability Information
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Vulnerability Title
Lack of protection against cookie tossing attacks in fastify-csrf
Source: CVE Program / CVE List V5
Vulnerability Description
fastify-csrf is an open-source plugin helps developers protect their Fastify server against CSRF attacks. Versions of fastify-csrf prior to 3.1.0 have a "double submit" mechanism using cookies with an application deployed across multiple subdomains, e.g. "heroku"-style platform as a service. Version 3.1.0 of the fastify-csrf fixes it. the vulnerability. The user of the module would need to supply a `userInfo` when generating the CSRF token to fully implement the protection on their end. This is needed only for applications hosted on different subdomains.
Source: CVE Program / CVE List V5
CVSS Information
CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:N/I:H/A:N
Source: CVE Program / CVE List V5
Vulnerability Type
在信任Cookie未进行验证与完整性检查
Source: CVE Program / CVE List V5
Vulnerability Title
Fastify 跨站请求伪造漏洞
Source: CNNVD (China National Vulnerability Database)
Vulnerability Description
Fastify是OpenJS（Openjs）基金会的一款用于Node.js的开源Web框架。 Node.js fastify 存在安全漏洞，攻击者可以通过Node.js fastify-csrf的Cookie Double Submit触发跨站请求伪造，以迫使受害者执行操作。
Source: CNNVD (China National Vulnerability Database)
CVSS Information
N/A
Source: CNNVD (China National Vulnerability Database)
Vulnerability Type
N/A
Source: CNNVD (China National Vulnerability Database)
Affected Products
| Vendor | Product | Affected Versions | CPE | Subscribe |
|---|---|---|---|---|
| fastify | fastify-csrf | < 3.1.0 | - |
II. Public POCs for CVE-2021-29624
| # | POC Description | Source Link | Shenlong Link |
|---|
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Patches & Fixes for CVE-2021-29624 (2)
- https://github.com/fastify/fastify-csrf/pull/51x_refsource_MISC
- https://github.com/fastify/csrf/pull/2x_refsource_MISC
Vendor Advisories for CVE-2021-29624 (1)
Other References for CVE-2021-29624 (3)
- https://github.com/fastify/fastify-csrf/releases/tag/v3.1.0x_refsource_MISC
IV. Related Vulnerabilities
Same vendor: fastify
- CVE-2026-33807
@fastify/express vulnerable to middleware path doubling caus - CVE-2026-33808
@fastify/express vulnerable to middleware authentication byp - CVE-2026-33806
fastify vulnerable to Body Schema Validation Bypass via Lead - CVE-2026-3635
Fastify request.protocol and request.host spoofable via X-Fo - CVE-2026-3419
Fastify's Missing End Anchor in "subtypeNameReg" Allows Malf
Same weakness: CWE-565
- CVE-2026-53871
Hermes WebUI < 0.51.368 - Profile-Scoped Authorization Bypas - CVE-2026-0257
PAN-OS: GlobalProtect Authentication Bypass Vulnerabilities - CVE-2026-39963
Serendipity: Host Header Injection enables authentication co - CVE-2026-5130
Debugger & Troubleshooter <= 1.3.2 - Unauthenticated Privile - CVE-2014-125112
Plack::Middleware::Session::Cookie versions through 0.21 for
V. Comments for CVE-2021-29624
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