CVE-2021-23597
HIGHCVSS 7.5/10EPSS 2.00%
Last modified
CVE-2021-23597 is a high-severity vulnerability rated 7.5/10 on the CVSS scale. This affects the package fastify-multipart before 5.3.1. By providing a name=constructor property it is still possible to crash the application. EPSS estimates a 2.00% chance of exploitation in the next 30 days.
Description
This affects the package fastify-multipart before 5.3.1. By providing a name=constructor property it is still possible to crash the application. **Note:** This is a bypass of CVE-2020-8136 (https://security.snyk.io/vuln/SNYK-JS-FASTIFYMULTIPART-1290382).
Metrics
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H
Weakness Enumeration
Affected Software
| Vendor | Product | Versions |
|---|---|---|
| Fastify | Fastify-Multipart | < 5.3.1 |
References
- https://github.com/fastify/fastify-multipart/commit/a70dc7059a794589bd4fe066453141fc609e6066Patch, Third Party Advisory
- https://github.com/fastify/fastify-multipart/releases/tag/v5.3.1Release Notes, Third Party Advisory
- https://snyk.io/vuln/SNYK-JS-FASTIFYMULTIPART-2395480Exploit, Patch, Third Party Advisory
- https://github.com/fastify/fastify-multipart/commit/a70dc7059a794589bd4fe066453141fc609e6066Patch, Third Party Advisory
- https://github.com/fastify/fastify-multipart/releases/tag/v5.3.1Release Notes, Third Party Advisory
- https://snyk.io/vuln/SNYK-JS-FASTIFYMULTIPART-2395480Exploit, Patch, Third Party Advisory
Timeline
- Published
- Last Modified
- Status
- Modified
Frequently Asked Questions
What is CVE-2021-23597?
This affects the package fastify-multipart before 5.3.1. By providing a name=constructor property it is still possible to crash the application. **Note:** This is a bypass of CVE-2020-8136 (https://security.snyk.io/vuln/SNYK-JS-FASTIFYMULTIPART-1290382).
How severe is CVE-2021-23597?
CVE-2021-23597 has a CVSS score of 7.5/10 (HIGH severity). The EPSS model estimates a 2.00% probability of exploitation in the next 30 days.
How do I fix CVE-2021-23597?
Check the vendor references and advisories linked above for patched versions and mitigation guidance. You can also run a Strix scan to test if your systems are affected.
How Strix Helps
- How Strix found a critical auth bypass in etcdStrix autonomously discovered a critical authentication bypass in etcd, later designated CVE-2026-33413.
- Autonomous PentestingAI agents that find and validate exploitable vulnerabilities like this one across your applications.
- PR ReviewsPentest every pull request so vulnerable code is caught before it ships to production.
- AI Penetration TestingHow AI-driven penetration testing continuously covers your attack surface.
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Are you affected by CVE-2021-23597?
Run a free Strix scan to check your systems for this vulnerability.
Scan your code nowSource: NVD / NIST