Vulnerability in Fastify Fastify-reply-from
CVE-2023-51701
fastify-reply-from is a Fastify plugin to forward the current HTTP request to another server. A reverse proxy server built with `@fastify/reply-from` could misinterpret the incoming body by passing an header `ContentType: application/json…
Vulnerability class: HTTP Request Smuggling
EPSS: 0.005 (37.7th percentile) — read the EPSS interpretation.
CVSS v3 metric
CVSS v3 base score 5.3 (Medium). Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:N/A:N.
Affected products
- Fastify Fastify-reply-from — versions < 9.6.0
- Fastify Reply-from
Weakness classification (CWE)
Public proof-of-concept exploits
References
- security-advisories@github.com (x_refsource_CONFIRM, Vendor Advisory)
- security-advisories@github.com (x_refsource_MISC, Release Notes)
Frequently asked questions
- What is CVE-2023-51701?
- CVE-2023-51701 is a medium-severity vulnerability in Fastify Fastify-reply-from, classified under Inconsistent Interpretation of HTTP Requests (HTTP Request/Response Smuggling). CVSS score: 5.3/10. Published 2024-01-08.
- How severe is CVE-2023-51701?
- Medium severity. CVSS v3 base score is 5.3 out of 10.
- Is CVE-2023-51701 known to be exploited?
- 1 public proof-of-concept repositories are indexed. Not currently listed in the CISA KEV catalog.