CVE-2018-3711
CVE-2018-3711 is a high-severity vulnerability in Fastify with a CVSS 3.x base score of 7.5. It is not currently listed as actively exploited by CISA, and its EPSS exploit-prediction score is low. The underlying weakness is classified as CWE-770.
Key facts
- Severity: High (CVSS 3.x base score 7.5)
- CVSS v2: 5.0
- EPSS exploit prediction: 2% (76th percentile)
- Actively exploited: Not listed in CISA KEV
- Weakness: CWE-770
- Affected product: Fastify
- Published:
- Last modified:
Description
Fastify node module before 0.38.0 is vulnerable to a denial-of-service attack by sending a request with "Content-Type: application/json" and a very large payload.
Frequently asked questions
- What is CVE-2018-3711?
- Fastify node module before 0.38.0 is vulnerable to a denial-of-service attack by sending a request with "Content-Type: application/json" and a very large payload.
- How severe is CVE-2018-3711?
- CVE-2018-3711 has a CVSS 3.x base score of 7.5, rated high severity. It is exploitable over network with low attack complexity, requires no privileges and no user interaction. Impact on confidentiality is none, integrity none, and availability high.
- Is CVE-2018-3711 being actively exploited?
- It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 2% (76th percentile), an estimate of the probability of exploitation in the next 30 days.
- What products are affected by CVE-2018-3711?
- CVE-2018-3711 affects Fastify. See the affected-products list for the exact vulnerable versions.
- How do I fix CVE-2018-3711?
- Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround. Given its high severity, prioritise patching exposed systems.
- When was CVE-2018-3711 published?
- CVE-2018-3711 was published on 2018-06-07 and last updated on 2026-06-17.
References
Affected products (1)
- cpe:2.3:a:fastify:fastify:*:*:*:*:*:node.js:*:*
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