Predictive Vulnerability Intelligence.

Product

  • Product
  • Pricing
  • Documentation

Company

  • About
  • Partnerships
  • Blog
  • Support

Legal

  • Terms
  • Privacy
  • Data Licensing

© 2026 FAUCET Technologies LLC. All rights reserved.

CVE-2023-51701

22
FAUCET Score

CVE-2023-51701 is a high-severity vulnerability affecting the fastify-reply-from plugin, which allows reverse proxy servers built with it to misinterpret incoming HTTP request bodies due to an incorrectly parsed Content-Type header. This flaw, rated 7.5 HIGH on the CVSS scale, could enable attackers to bypass security checks, leading to a high impact on integrity without requiring user interaction or complex attack conditions. There is currently no evidence of active exploitation, public exploit code, or significant community discussion surrounding this vulnerability.

Impacted Technologies

VendorProductVersion(s)CPE
< 9.6.0CPE matchmatch criteria
cpe:2.3:a:fastify:reply-from:*:*:*:*:*:node.js:*:*

CVSS Data

CVSS version used by this source: 3.1

5.3MEDIUM

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

Attack Vector
NETWORK
Attack Complexity
LOW
Privileges Required
NONE
User Interaction
NONE
Scope
UNCHANGED
Confidentiality Impact
LOW
Integrity Impact
NONE
Availability Impact
NONE
Exploitability Score
3.9
Impact Score
1.4
CvssVersion
3.1

Exploit Intelligence

EPSS Score
0.48%
Probability of exploitation in next 30 days
EPSS Percentile
38.6%
Percentile rank of EPSS score among Peer Group
As of 2026-07-26
Model: v2026.06.15
This CVE's current EPSS score of 0.0048 is in the 17th percentile among its peer group of 51,485 CVEs.

Social Chatter

The average CVE in this peer group has 0.0 Twitter, 0.0 Reddit, 0.1 Bluesky, 0.1 Mastodon, and 0.4 GitHub mentions.

Media Mentions

No media coverage found for this CVE.

The average CVE in this peer group has 0.1 InfoSec Media, 0.0 Vendor Blog, and 0.0 Security Researcher mentions.

Remediation

Patch Available

Vendor Patches (2)

npmpatch availablevia ghsa
Product: @fastify/reply-fromFixed in: 9.6.0
github_advisoryvendor investigatingvia nvd_reference
View patch

Vendor Advisories (1)

npmGHSA-v2v2-hph8-q5xpmedium

@fastify/reply-from JSON Content-Type parsing confusion

Jan 8, 2024

References

github.com / fastify/fastify-reply-from/releases/tag/v9.6.0
Release Notes
github.com / fastify/fastify-reply-from/security/advisories/GHSA-v2v2-hph8-q5xp
Vendor Advisory