How severe is CVE-2020-5416?

CVE-2020-5416 has a CVSS 3.x base score of 6.5, rated medium severity. It is exploitable over network with low attack complexity, requires low privileges and no user interaction. Impact on confidentiality is none, integrity none, and availability high.

Is CVE-2020-5416 being actively exploited?

It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 1% (66th percentile), an estimate of the probability of exploitation in the next 30 days.

What products are affected by CVE-2020-5416?

CVE-2020-5416 primarily affects Cloudfoundry Cf-deployment. In total, 2 product configurations (CPEs) are listed as vulnerable; see the affected-products list for the exact versions.

How do I fix CVE-2020-5416?

Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround.

When was CVE-2020-5416 published?

CVE-2020-5416 was published on 2020-08-21 and last updated on 2026-06-17.

CVE-2020-5416

CVE-2020-5416 is a medium-severity vulnerability in Cloudfoundry Cf-deployment with a CVSS 3.x base score of 6.5. 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-404.

Key facts

Severity: Medium (CVSS 3.x base score 6.5)
CVSS v2: 4.0
EPSS exploit prediction: 1% (66th percentile)
Actively exploited: Not listed in CISA KEV
Weakness: CWE-404
Affected product: Cloudfoundry Cf-deployment
Published: 2020-08-21
Last modified: 2026-06-17

Description

Cloud Foundry Routing (Gorouter), versions prior to 0.204.0, when used in a deployment with NGINX reverse proxies in front of the Gorouters, is potentially vulnerable to denial-of-service attacks in which an unauthenticated malicious attacker can send specially-crafted HTTP requests that may cause the Gorouters to be dropped from the NGINX backend pool.

Frequently asked questions

What is CVE-2020-5416?: Cloud Foundry Routing (Gorouter), versions prior to 0.204.0, when used in a deployment with NGINX reverse proxies in front of the Gorouters, is potentially vulnerable to denial-of-service attacks in which an unauthenticated malicious attacker can send specially-crafted HTTP requests that may cause the Gorouters to be dropped from the NGINX backend pool.
How severe is CVE-2020-5416?: CVE-2020-5416 has a CVSS 3.x base score of 6.5, rated medium severity. It is exploitable over network with low attack complexity, requires low privileges and no user interaction. Impact on confidentiality is none, integrity none, and availability high.
Is CVE-2020-5416 being actively exploited?: It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 1% (66th percentile), an estimate of the probability of exploitation in the next 30 days.
What products are affected by CVE-2020-5416?: CVE-2020-5416 primarily affects Cloudfoundry Cf-deployment. In total, 2 product configurations (CPEs) are listed as vulnerable; see the affected-products list for the exact versions.
How do I fix CVE-2020-5416?: Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround.
When was CVE-2020-5416 published?: CVE-2020-5416 was published on 2020-08-21 and last updated on 2026-06-17.

References

https://www.cloudfoundry.org/blog/cve-2020-5416

Affected products (2)

cpe:2.3:a:cloudfoundry:cf-deployment:*:*:*:*:*:*:*:*
cpe:2.3:a:cloudfoundry:routing-release:*:*:*:*:*:*:*:*

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