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TI-2021-06170 Aliases CVE-2021-23597GHSA-qh73-qc3p-rjv2

Denial of service (DoS) in fastify-multipart

Priority LOW 37CWE-1321Published · Updated

Key facts

Attack vector
Network
Privileges required
None
User interaction
None
Attack complexity
Low
Impact type
Denial of service
Confidentiality · integrity · availability
None · None · High
Fix status
Fixed

Attack profile from CVSS 3.1 · CNA. Fix status from CNA and GitHub. Impact type from CWE-400.

Summary

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).

Why it matters now

EPSS 0.0203 81st percentileScored 2026-11-07
Fix Fixed fastify-multipart: 5.3.1fastify-multipart (npm): 5.3.1

SSVC decision points

Not available: CISA has not published SSVC decision points for this record.

Affected products

VendorProductAffected versionsFixed inStatusSource
—fastify-multipartbefore 5.3.15.3.1Patch availableCNA
—fastify-multipart (npm)before 5.3.15.3.1Patch availableGHSA-qh73-qc3p-rjv2
  • fastify-multipart Vendor— Affected before 5.3.1 Fixed in 5.3.1 Patch available CNA
  • fastify-multipart (npm) Vendor— Affected before 5.3.1 Fixed in 5.3.1 Patch available GHSA-qh73-qc3p-rjv2

CPE configurations NVD · 1

CPEVersionsRoleVendor
cpe:2.3:a:fastify:fastify-multipart:*:*:*:*:*:fastify:*:*before 5.3.1Vulnerablefastify
  • cpe:2.3:a:fastify:fastify-multipart:*:*:*:*:*:fastify:*:* Versions before 5.3.1 Vulnerable ·fastify

Remediation

  • Fix · CNA fastify-multipart Fixed in 5.3.1
  • Fix · GHSA-qh73-qc3p-rjv2 fastify-multipart (npm) Fixed in 5.3.1 Advisory →

Timeline

  1. 2026-10-02 Threatist record created from CVE-2021-23597
  2. 2026-10-03 Alias added: GHSA-qh73-qc3p-rjv2

References

Patch 1

Advisory 2

Other 4

  • TI-2023-10879 @fastify/multipart vulnerable to DoS due to unlimited number of parts CVSS 3.1HIGH 7.5
  • TI-2026-15210 @fastify/multipart vulnerable to Denial of Service via aborted upload after fileSize limit CVSS 3.1HIGH 7.5
  • TI-2026-15859 @fastify/multipart vulnerable to Denial of Service via temporary file leak on aborted upload CVSS 3.1HIGH 7.5
  • TI-2020-06554 Uncontrolled resource consumption in fastify-multipart CVSS 3.1HIGH 7.5

Sources

This product uses the NVD API but is not endorsed or certified by the NVD. Sources and licences