CVE-2020-8136

CVE-2020-8136 is a high-severity vulnerability in Fastify Fastify-multipart 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-400.

Key facts

Description

Prototype pollution vulnerability in fastify-multipart < 1.0.5 allows an attacker to crash fastify applications parsing multipart requests by sending a specially crafted request.

Frequently asked questions

What is CVE-2020-8136?
Prototype pollution vulnerability in fastify-multipart < 1.0.5 allows an attacker to crash fastify applications parsing multipart requests by sending a specially crafted request.
How severe is CVE-2020-8136?
CVE-2020-8136 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-2020-8136 being actively exploited?
It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 1% (70th percentile), an estimate of the probability of exploitation in the next 30 days.
What products are affected by CVE-2020-8136?
CVE-2020-8136 affects Fastify Fastify-multipart. See the affected-products list for the exact vulnerable versions.
How do I fix CVE-2020-8136?
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-2020-8136 published?
CVE-2020-8136 was published on 2020-03-20 and last updated on 2026-06-17.

References

Affected products (1)

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