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CVE-2022-39288

57
FAUCET Score

CVE-2022-39288 is a denial-of-service vulnerability affecting the fastify web framework for Node.js, where an attacker can crash the application by sending a malicious Content-Type header. Rated with a CVSS score of 7.5 (High), this vulnerability is easily exploitable over the network with low attack complexity, leading to a complete loss of availability. There is currently no evidence of active exploitation, public exploit code, or significant community discussion surrounding this CVE. Users are advised to upgrade to fastify version 4.8.1 or implement manual filtering of malicious Content-Type headers.

Impacted Technologies

VendorProductVersion(s)CPE
< 4.8.1CPE matchmatch criteria
cpe:2.3:a:fastify:fastify:*:*:*:*:*:node.js:*:*

CVSS Data

CVSS version used by this source: 3.1

7.5HIGH

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

Attack Vector
NETWORK
Attack Complexity
LOW
Privileges Required
NONE
User Interaction
NONE
Scope
UNCHANGED
Confidentiality Impact
NONE
Integrity Impact
NONE
Availability Impact
HIGH
Exploitability Score
3.9
Impact Score
3.6
CvssVersion
3.1

Exploit Intelligence

EPSS Score
59.24%
Probability of exploitation in next 30 days
EPSS Percentile
99.0%
Percentile rank of EPSS score among Peer Group
As of 2026-07-28
Model: v2026.06.15
This CVE's current EPSS score of 0.5924 is in the 98th percentile among its peer group of 51,553 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)

github_advisorypatch availablevia nvd_reference
View patch
npmpatch availablevia ghsa
Product: fastifyFixed in: 4.8.1

Vendor Advisories (1)

npmGHSA-455w-c45v-86rghigh

fastify vulnerable to denial of service via malicious Content-Type

Oct 11, 2022

References

github.com / fastify/fastify/commit/fbb07e8dfad74c69cd4cd2211aedab87194618e3
PatchThird Party Advisory
github.com / fastify/fastify/security/advisories/GHSA-455w-c45v-86rg
MitigationThird Party Advisory
github.com / fastify/fastify/security/policy
Third Party Advisory